WO2014079281A1 - Oscillator, resonant cavity, filter device, and electromagnetic device - Google Patents

Oscillator, resonant cavity, filter device, and electromagnetic device Download PDF

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Publication number
WO2014079281A1
WO2014079281A1 PCT/CN2013/084837 CN2013084837W WO2014079281A1 WO 2014079281 A1 WO2014079281 A1 WO 2014079281A1 CN 2013084837 W CN2013084837 W CN 2013084837W WO 2014079281 A1 WO2014079281 A1 WO 2014079281A1
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WO
WIPO (PCT)
Prior art keywords
resonator
conductive layer
resonant cavity
cavity
dielectric
Prior art date
Application number
PCT/CN2013/084837
Other languages
French (fr)
Chinese (zh)
Inventor
刘京京
刘若鹏
徐冠雄
Original Assignee
深圳光启创新技术有限公司
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Publication of WO2014079281A1 publication Critical patent/WO2014079281A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/04—Coaxial resonators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
    • H01P1/2053—Comb or interdigital filters; Cascaded coaxial cavities the coaxial cavity resonators being disposed parall to each other
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/10—Dielectric resonators

Definitions

  • the present invention relates to a radio frequency component and an apparatus therefor, and more particularly to a resonator, a resonant cavity, a filter device, and an electromagnetic wave device.
  • BACKGROUND OF THE INVENTION Conventional metal resonator filters are small in size and can achieve resonance at lower frequencies, but small size can result in unacceptable higher power.
  • Conventional dielectric resonator filters can withstand high power, but if low-frequency resonance is to be achieved, the volume of the dielectric resonator and the volume of the metal cavity will be large, which does not meet the needs of miniaturization of the filter.
  • An object of the present invention is to provide a resonator, a resonant cavity, a filter device, and an electromagnetic wave device having a low resonance frequency, a small volume, and high power resistance in view of the above-described drawbacks of the prior art.
  • a resonator is constructed, including a dielectric body, and a concave hole is formed in a surface of the dielectric body, and a conductive layer made of a conductive material is disposed in the concave hole.
  • the conductive layer is directly attached to the inner wall of the recess.
  • the conductive layer is fixed to the side surface or the bottom surface of the inner wall of the recessed hole by a connecting medium.
  • the dielectric body is made of a material having a dielectric constant greater than 1.
  • the medium body is made of a ceramic material.
  • the conductive layer is a metal cylinder
  • the medium body is cylindrical and sleeved outside the metal cylinder.
  • the recessed hole is a blind hole or a through hole.
  • the recessed holes are circular holes, square holes, truncated holes, square holes, tapered holes or irregular shapes.
  • the conductive layer covers a side surface or a bottom surface of the inner wall of the recessed hole Or covering the entire inner wall surface of the recess.
  • the conductive material of the conductive layer is a metal.
  • the conductive material is silver, copper or gold, or an alloy containing one or two or three of silver, copper or gold.
  • the conductive material of the conductive layer is a conductive non-metal.
  • the conductive material is conductive graphite, indium tin oxide or aluminized zinc oxide.
  • the present invention also relates to a resonant cavity including a cavity, a resonator located in the cavity, the resonator being the above-mentioned resonator, comprising a dielectric body having a recessed hole in the surface of the medium body, A conductive layer made of a conductive material is attached to the inner wall of the recess.
  • the resonant cavity further includes a tuning rod mounted for tuning on the cavity and extending into the cavity, the tuning rod being disposed opposite the recess.
  • At least two recessed holes are provided in the medium body, and a tuning rod is disposed at a position opposite to each of the recessed holes.
  • the tuning rod is a screw made of a non-metallic material having a dielectric constant greater than 1, or a metal screw.
  • the recessed hole is a through hole, and a conductor connecting layer is attached to a surface of the dielectric body connected to the through hole.
  • the conductor connecting layer and the inner wall of the resonant cavity are fixedly connected by welding or hot pressing or screwing or bonding.
  • the invention further relates to a filter device comprising one or more resonant cavities, at least one resonant cavity being the above-mentioned resonant cavity, comprising a cavity, a resonator located in the cavity, the harmonic oscillator being the above-mentioned resonator, which comprises
  • the medium body has a recessed hole formed in the surface of the medium body, and a conductive layer made of a conductive material is attached to the inner wall of the recessed hole.
  • the filter device is a filter or a duplexer.
  • the conductive layer of the resonator is in contact with the resonant cavity to be grounded.
  • the filter device includes a plurality of resonant cavities, and each of the resonant cavities is provided with one of the resonators, and a recessed hole of each of the resonators is correspondingly provided with a tuning rod.
  • the resonant cavity of the filter member is open between the resonant cavity and the resonant cavity.
  • the windows are coupled, and each window opening position is provided with a coupling rod.
  • the filter device is a band pass filter, a band stop filter, a high pass filter, a low pass filter or a multi-band filter.
  • the invention also relates to an electromagnetic wave device comprising the filter device described above.
  • the electromagnetic wave device is an airplane, a radar, a base station or a satellite.
  • the present invention has the following beneficial effects:
  • the present invention is advantageous in that the resonant frequency of the resonant cavity having the resonant resonator is reduced by using a resonator having a conductive layer, thereby greatly reducing the volume of the resonant cavity, and the filter component having the resonant cavity and The volume of electromagnetic wave equipment will also be significantly reduced.
  • Still another object of the present invention is to provide a resonator, a resonant cavity, a filter device, and an electromagnetic wave device which have a low resonance frequency, a small volume, and a high power resistance in view of the above-described drawbacks of the prior art.
  • a resonator comprising a dielectric body, a recessed hole is formed in a surface of the medium body, and a first conductive layer made of a conductive material is disposed on a sidewall of the medium body.
  • the first conductive layer is directly attached to the outer wall of the medium body.
  • the first conductive layer is fixed to the outer wall of the dielectric body by a connection medium.
  • the first conductive layer covers all or part of the surface of the outer sidewall of the dielectric body.
  • the first conductive layer is a metal cylinder
  • the medium body is cylindrical and built in the metal cylinder.
  • the inner wall of the recessed hole is provided with a second conductive layer made of a conductive material.
  • the second conductive layer is directly attached to the inner wall of the recess.
  • the second conductive layer is fixed to the side surface or the bottom surface of the inner wall of the recess by a connecting medium.
  • the second conductive layer is a metal cylinder
  • the medium body is cylindrical and sleeved outside the metal cylinder.
  • the second conductive layer covers a side of the inner wall of the recessed hole Or on the bottom surface, or the second conductive layer covers the entire inner wall surface of the inner wall of the recessed hole.
  • the dielectric body is made of a material having a dielectric constant greater than one.
  • the medium body is made of a ceramic material.
  • the recessed hole is a blind hole or a through hole.
  • the conductive material is a metal.
  • the conductive material is silver, copper or gold, or an alloy containing one or two or three of silver, copper or gold.
  • the conductive material is a conductive non-metal.
  • the conductive material is conductive graphite, indium tin oxide or aluminized zinc oxide.
  • a resonant cavity includes a cavity, a resonator located in the cavity, the resonator is a resonator as described above, and includes a dielectric body, a surface of the dielectric body is provided with a concave hole, and the dielectric body The outer sidewall is provided with a first conductive layer of a conductive material.
  • the inner wall of the recessed hole is provided with a second conductive layer made of a conductive material.
  • the resonant cavity further includes a tuning rod mounted on the cavity and extending into the cavity cavity for tuning, the tuning rod being disposed opposite the recessed hole.
  • At least two recessed holes are provided in the medium body, and a tuning rod is disposed at a position opposite to each of the recessed holes.
  • the tuning rod is a screw made of a non-metallic material having a dielectric constant greater than 1, or a metal screw.
  • the recessed hole is a through hole, and a conductor connecting layer is attached to a surface of the dielectric body connected to the through hole.
  • the conductor connecting layer and the inner wall of the resonant cavity are fixedly connected by welding or hot pressing or screwing or bonding.
  • a filter device comprising one or more resonant cavities, at least one of which is a resonant cavity as described above.
  • the filter device is a filter or a duplexer.
  • the second conductive layer of the resonator is in contact with the resonant cavity to be grounded.
  • the filter device includes a plurality of resonant cavities, and each of the resonant cavities is provided with one of the resonators, and a recessed hole of each of the resonators is correspondingly provided with a tuning rod.
  • the resonant cavity of the filter member is coupled to the resonant cavity by a window, and each of the window opening positions is provided with a coupling rod.
  • the filter device is a band pass filter, a band stop filter, a high pass filter, a low pass filter or a multi-band filter.
  • An electromagnetic wave device comprising: a signal transmitting module, a signal receiving module and a filter component, wherein an input end of the filter component is connected to the signal transmitting module, an output end is connected to a signal receiving module, and the filter component is the filtering described above Device.
  • the electromagnetic wave device is an airplane, a radar, a base station or a satellite.
  • the present invention has the following beneficial effects:
  • the outer side wall of the resonator and the inner wall of the concave hole are adhered with a conductive layer, which is advantageous for reducing the resonant frequency of the resonant cavity having the resonator, thereby greatly reducing the volume of the resonant cavity,
  • the volume of the filter element and the electromagnetic wave device of the resonant cavity is also significantly reduced.
  • Still another object of the present invention is to provide a resonator, a resonant cavity, a filter device, and an electromagnetic wave device which have a low resonance frequency, a small volume, and a high power resistance in view of the above-described drawbacks of the prior art.
  • a resonator comprising at least two dielectric layers, and a conductive layer is disposed between two adjacent dielectric layers.
  • the dielectric layer and the conductive layer are both plural, and the dielectric layer and the conductive layer are alternately disposed.
  • the plurality of dielectric layers are all cylindrical and sequentially jacketed, and a conductive layer is disposed between any adjacent two cylindrical dielectric cylinders.
  • the conductive layer is cylindrical and is provided with an inner jacket alternately alternating with the at least two dielectric layers.
  • each of the conductive layers is an annular conductive foil.
  • each of the conductive layers includes at least one artificial microstructure.
  • each of the conductive layers includes a plurality of artificial microstructures that are not electrically connected to each other, and each of the artificial microstructures has a geometric pattern structure made of a conductive material.
  • the heights of the different dielectric layers are the same or not identical.
  • the relative positions of the different conductive layers are the same or not identical.
  • the artificial microstructures of the different conductive layers are the same or not identical.
  • the dielectric layer is made of a material having a dielectric constant greater than 1.
  • the dielectric layer is made of a material having a dielectric constant greater than 30.
  • the dielectric layer is made of a ceramic material.
  • the conductive material of the conductive layer is a metal.
  • the conductive material is silver, copper or gold, or an alloy containing one or two or three of silver, copper or gold.
  • the conductive material of the conductive layer is a non-metal.
  • the conductive material is conductive graphite, indium tin oxide or aluminized zinc oxide.
  • the conductive layer is directly attached to or spaced apart from the surface of the adjacent two dielectric layers.
  • the invention further relates to a resonant cavity comprising a cavity, said harmonic oscillator located within said cavity, comprising at least two dielectric layers, a conductive layer being disposed between two adjacent said dielectric layers.
  • the at least two dielectric layers are all cylindrical and sequentially jacketed, and a conductive layer is disposed between any adjacent two cylindrical dielectric cylinders.
  • the resonant cavity further includes a tuning rod mounted for tuning on the cavity and extending into the cavity, the tuning rod being disposed opposite the recess.
  • the tuning rod is a screw made of a non-metallic material having a dielectric constant greater than one.
  • the tuning rod is a metal screw.
  • a conductor connection layer is attached to the bottom of the dielectric layer.
  • the conductor connecting layer and the inner wall of the resonant cavity are fixedly connected by welding or hot pressing or screwing or bonding.
  • each of the electrically conductive layers includes at least one artificial microstructure.
  • the invention further relates to a filter device comprising one or more resonant cavities, at least one of which is a resonant cavity as described above.
  • the filter device is a filter or a duplexer.
  • the conductive layer is in contact with the resonant cavity to be grounded.
  • the filter device includes a plurality of resonant cavities, and each of the resonant cavities is provided with one of the resonators, and each of the resonators is correspondingly provided with a tuning rod.
  • the resonant cavity of the filter member is coupled to the resonant cavity by a window, and each of the window opening positions is provided with a coupling rod.
  • the filter device is a band pass filter, a band stop filter, a high pass filter, a low pass filter or a multi-band filter.
  • the invention also relates to an electromagnetic wave device, comprising a signal transmitting module, a signal receiving module and a filter component, wherein an input end of the filter component is connected to the signal transmitting module, and an output end is connected to the signal receiving module, wherein the filter component is the above The filter element.
  • the electromagnetic wave device is an airplane, a radar, a base station or a satellite.
  • the present invention has the following beneficial effects:
  • the resonator of the present invention adopts a structure in which a conductive layer is disposed between two inner and outer dielectric layers, and a mode with a lower resonant frequency can be obtained, which is advantageous for reducing the resonant frequency of the resonant cavity having the resonator. Therefore, the volume of the resonant cavity is greatly reduced, and the volume of the filter member and the electromagnetic wave device having the resonant cavity is also significantly reduced.
  • Figure 1 is a plan view of a resonator of a preferred embodiment of the present invention.
  • Figure 2 is a half cross-sectional front view of the resonator shown in Figure 1;
  • FIG. 3 is a schematic structural view of a resonator of another embodiment
  • Figure 4 is a half cross-sectional plan view of a resonant cavity in an embodiment
  • Figure 5 is a half cross-sectional front view of the resonant cavity shown in Figure 4.
  • Figure 6 is a cross-sectional view taken along line B-B of the filter member in an embodiment
  • Figure 7 is a cross-sectional view taken along line A-A of the filter member shown in Figure 6;
  • FIG. 8 is a schematic partial structural view of the electromagnetic wave device of the present invention when it is a base station;
  • Figure 9 is a plan view of a resonator of a preferred embodiment of the present invention.
  • Figure 10 is a front elevational view of the resonator shown in Figure 9;
  • Figure 11 is a front elevational view showing another embodiment of the resonator of the present invention.
  • 12 is a top view of a resonant cavity in an embodiment;
  • Figure 13 is a front elevational view of the resonant cavity of Figure 12;
  • Figure 14 is a cross-sectional view taken along line B-B of the filter member in an embodiment
  • Figure 15 is a cross-sectional view taken along line A-A of the filter member shown in Figure 14;
  • 16 is a schematic partial structural diagram of an electromagnetic wave device of the present invention when it is a base station;
  • Figure 17 is a plan view of a resonator of a first embodiment of the present invention.
  • Figure 18 is a front elevational view of the resonator shown in Figure 17;
  • Figure 19 is a cross-sectional view showing a resonator of a second embodiment of the present invention.
  • Figure 20 is a plan view of a resonator of a third embodiment of the present invention.
  • Figure 21 is a cross-sectional view of the embodiment shown in Figure 20;
  • Figure 22 is a plan view of a resonator of a third embodiment of the present invention.
  • Figure 23 is a perspective view of a resonator of a fourth embodiment of the present invention.
  • FIG. 24 is a schematic structural view of a resonant cavity of the present invention
  • FIG. 25 is a schematic structural view of an electromagnetic wave device of the present invention.
  • the present invention relates to a resonator and a resonant cavity having the same, a filter member and an electromagnetic wave device which have a resonant cavity having a very low resonant frequency and thus a volume compared to a conventional resonant cavity of the same resonant frequency To be much smaller, it is possible to effectively reduce the volume and weight of the filter member composed of the resonator and the electromagnetic wave device having the filter member.
  • the resonator of one embodiment includes a dielectric body 1.
  • the outer surface of the dielectric body 1 is provided with a recess 2 for recessing the interior of the dielectric body 1, and all or part of the surface of the inner wall of the recess 2.
  • a conductive layer 3 composed of a conductive material is attached thereto.
  • the dielectric body 1 may be any material having a dielectric constant greater than 1, such as polytetrafluoroethylene, epoxy resin, FR4 material, etc., but the higher the dielectric constant and the smaller the loss tangent, the more favorable the electromagnetic resonance and the lower the resonance.
  • the frequency is preferably a ceramic material such as alumina in the prior art, and may also be a microwave dielectric ceramic such as BaTi409, Ba2Ti9O20, MgTi03-CaTi03, BaO-Ln203-Ti02 system, Bi203-ZnO-Nb205 system or the like.
  • the dielectric body 1 may be made of a material having a high dielectric constant and a low loss (typically having a dielectric constant of more than 30 and a loss tangent of less than 0.01).
  • the medium body 1 of the present embodiment is a rectangular square column, and four ribs are rounded.
  • the resonator is not limited to such a shape, and the dielectric body 1 of the present invention may have any shape of a resonator of any type, such as a cylindrical shape, a square shape, a truncated cone shape, a square ladder, or any other rule or not.
  • the regular shape does not affect the characteristics of the resonator of the present invention, and is not limited herein.
  • the recessed hole 2 shown in Fig. 2 is a through hole, that is, the recessed hole 2 penetrates from one surface of the medium body 1 to the other surface.
  • the through hole of this embodiment is a cylindrical hole, and preferably the center line of the cylindrical hole is located on the central axis of the medium body 1, so that the electromagnetic field of the cavity is symmetrically distributed when the resonator is placed at the center of the cavity.
  • the through holes may also be cylindrical, square cylindrical, truncated, square, tapered or other regular or irregular shapes, or conformal to the outer contour of the dielectric body 1 such that the dielectric body 1 is of equal thickness.
  • the recessed hole 2 is not necessarily a through hole, and may be a blind hole, that is, a hole that does not penetrate to the other surface.
  • the blind hole may have the same shape as the above-mentioned through hole, but only has a short height, and may have other shapes such as a hemispherical shape, a tetrahedral shape, and the like, which are not limited herein.
  • a conductive layer 3 is attached to the inner wall surface of the recess 2, and the conductive layer 3 is made of a conductive material, preferably a metal such as silver, copper or gold, or one or two or three of silver, copper or gold.
  • the alloy may be other metal materials or other metal alloy conductive materials or non-metal conductive materials such as conductive graphite, indium tin oxide or aluminized zinc oxide.
  • the conductive layer 3 may be directly attached to the inner wall of the recessed hole 2 as described above, or may be disposed inside the recessed hole 2 by a connecting medium, for example, by adhesive bonding, or one end of the connecting rod may be connected to the conductive layer 3, and the other end may be
  • the inner wall of the recessed hole 2 is fixed such that the conductive layer 3 is separated from the inner wall of the recessed hole 2 by an air layer, or other low-loss, low-dielectric material is added between the two, and the like.
  • the medium body 1 is a cylindrical shape having a uniform hook shape, and the concave hole in the middle is a through hole.
  • the conductive layer 3 is a metal cylinder having a certain thickness, and the bottom portion is provided with a flange, and the dielectric body 1 is sleeved outside the conductive layer 3 and the bottom surface can be placed just on the flange.
  • the metal cylinder does not necessarily have a flange, and may have only a cylindrical structure, and is fixed to the bottom of the cavity by bonding or the like.
  • the conductive layer of the resonator is electrically connected directly to the bottom of the cavity to be grounded.
  • the conductive layer 3 may cover the inner wall surface of the entire recessed hole 2, and may be a partial surface of the inner wall of the recessed hole 2, for example, a side surface covering only the inner wall of the recessed hole 2, that is, an inner wall portion connected to the open end surface of the recessed hole 2; It is also possible to cover only the bottom surface of the recessed hole 2, that is, the inner wall portion which is not connected to the open end of the recessed hole 2, or the partial portion of the side surface and the partial portion of the bottom surface.
  • the resonant cavity includes a cavity 5, a resonator, and a tuning rod 4.
  • the open end of the cavity 5 is provided with a cavity cover, and the cavity and the cavity cover are combined to form a closed space.
  • the resonator is located in the closed space, and the bottom portion thereof can be made of a low loss material (such as alumina).
  • the support seat supports the resonator.
  • a tuning rod 4 is mounted on the cavity or chamber cover, and the end of the tuning rod 4 projects into the enclosed space and at least partially projects into the recess 2 of the resonator.
  • the tuning rod 4 is typically a metal screw that is mounted on the chamber cover by a nut and has a length that extends into the chamber to adjust the resonant frequency of the cavity over a small range.
  • the tuning rod 4 can also be made of a ceramic material or a metal or ceramic or other high dielectric constant material coated on the outer surface of a rod made of a low loss material.
  • the tuning rod 4 may also be made of a non-metallic material as long as its dielectric constant is greater than 1, and a material having a higher dielectric constant is of course preferable.
  • the present invention does not limit the material and shape of the tuning rod 4 as long as it protrudes into the cavity 5 to perturb the electromagnetic field distribution in the cavity to affect the resonant frequency.
  • the end of the tuning rod 4 can be in direct contact with the inner wall of the recess 2 or the conductive layer 3.
  • the bottom surface of the dielectric body 1 that is in contact with the cavity 5 may be provided with a conductor connection layer, and the conductor connection layer is made of the same or different conductive material as the conductive layer 3, and the through hole
  • the conductive layers 3 on the inner wall are joined.
  • the conductor connection layer may be integrally attached to the cavity 5 by heat pressing or soldering or other known connection technique.
  • the medium body 1 may be provided with two or more recessed holes 2, and at least one of the recessed holes 2 corresponding to a tuning rod 4, of course, in order to increase the amount of perturbation, A tuning rod 4 is disposed at a position opposite to each of the recessed holes 2.
  • the cavity of the cavity is a square cylinder.
  • the ceramic dielectric resonator is a cylindrical microwave dielectric ceramic with a diameter of 24 mm, an inner diameter of 8 mm, and a height of 19 mm.
  • the inner diameter corresponds to a through hole.
  • the resonant frequency of the resonant cavity having the dielectric resonator is measured to be 1.642 GHz, and the average power of the resonant cavity is 275 W.
  • the same cavity and dielectric resonator (the above-mentioned pure ceramic dielectric resonator is used as the dielectric body of the resonator in this example), and silver is plated in the through hole of the resonator (ie, the recess in this example)
  • the resonance frequency of the resonator having the resonator was experimentally measured to fall to 0.875 GHz, and the average power was 335 W.
  • the resonant frequency can be reduced by about 800 MHz with respect to a simple dielectric resonator, which is substantially half of the original resonant frequency, which means that when a resonant cavity of the same resonant frequency is prepared, The volume of the cavity will be greatly reduced, but has little effect on power.
  • the same cavity is used to replace the dielectric resonator with a metal resonator of the same shape and volume, that is, the metal resonator is a cylindrical shape having an outer diameter of 24 mm, an inner diameter of 8 mm, and a height of 19 mm, and the material is pure copper. It is experimentally measured that the resonant frequency of the resonant cavity having the metal resonator is 1.569 GHz, and the average power is 54W.
  • the resonator of the present invention can provide a substantially similar resonant frequency with respect to a simple metal resonator, and the average power is greatly improved.
  • the resonator of the present invention has the advantages of high dielectric resistance of the dielectric resonator, and has the advantages of low resonance frequency and small volume of the metal resonator, and can greatly expand the cavity of the prior art. , the application range of the filter components.
  • the present invention also relates to a filter device, which may be a filter, a duplexer or other device having a filtering function, including at least one resonant cavity, wherein at least one resonant cavity is the above Resonant cavity.
  • the filter shown in Figure 6 is a filter with six resonant cavities.
  • the input end 8 and the output end 9 are respectively arranged at two ends of the cavity 5.
  • the cavity and the cavity are coupled by a window and the window is opened to the bottom; at the same time, the plurality of resonators are connected in series through the bridge portion 7 as shown in FIG.
  • the bridging portion 7 may be made of the same material as the medium body 1, or may be made of a different material.
  • each window opening position is also provided with a coupling rod 6, and the coupling strength can also be adjusted by the length of the coupling rod 6 extending into the cavity.
  • electrical or magnetic coupling between the cavities of conventional filters can be applied to the present invention, such as disk coupling, metal rod coupling, and the like.
  • each of the resonators has a recessed hole 2 and a conductive layer 3 attached to the inner wall of the recessed hole 2 as described above, and each recessed hole 2 is provided with a tuning rod 4 correspondingly inserted into the recessed hole 2 Inside.
  • the present invention also protects an electromagnetic wave device having the above filter member, which may be any device that requires a filter device, such as an airplane, a radar, a base station, a satellite, or the like.
  • a filter device such as an airplane, a radar, a base station, a satellite, or the like.
  • These electromagnetic wave devices receive and transmit signals and filter them after reception or before transmission so that the received or transmitted signals satisfy the requirements. Therefore, the electromagnetic wave device further includes at least a signal transmitting module connected to the input end of the filter device, and filtering.
  • a signal receiving module connected to the output of the device.
  • the electromagnetic wave device is a base station, and the base station includes a duplexer as a filter member, and the duplexer includes a transmit band pass filter and a receive band pass filter.
  • the input end of the transmit bandpass filter is connected to the transmitter, and the output is connected to the base station antenna; the input end of the receive bandpass filter is connected to the base station antenna, and the output is connected to the receiver.
  • the signal transmitting module is a transmitter, and the signal receiving module is a base station antenna.
  • the signal transmitting module is a base station antenna, and the signal receiving module is a receiver.
  • the invention adopts a resonator having a conductive layer 3, which is advantageous for reducing the resonant frequency of the resonant cavity having the harmonic oscillator, thereby greatly reducing the volume of the resonant cavity when achieving the same resonant frequency;
  • the presence of the mass body in turn allows the entire resonator to withstand high power. Therefore, the volume of the filter member and the electromagnetic wave device having the resonant cavity is also significantly reduced, and high power is withstand.
  • the present invention relates to a resonator, a resonator having the resonator, a filter member, and an electromagnetic wave device, the resonator having a very low resonance frequency, and thus having a smaller volume than a conventional cavity of the same resonance frequency More, the filter member composed of the resonant cavity and the volume and weight of the electromagnetic wave device having the filter member can be effectively reduced.
  • the resonator of one embodiment includes a dielectric body 1.
  • the outer surface of the dielectric body 1 is provided with a recessed hole 2 recessed toward the interior of the dielectric body 1.
  • the outer wall of the medium body is provided with a conductive material.
  • the first conductive layer 4, the entire surface or part of the surface of the inner wall of the recess 2 is also provided with a second conductive layer 3 made of a conductive material.
  • the dielectric body 1 may be any material having a dielectric constant greater than 1, such as polytetrafluoroethylene, epoxy resin, F4B, FR4 material, etc., but the higher the dielectric constant and the smaller the loss tangent, the more favorable the electromagnetic resonance The resonance frequency is lowered.
  • a ceramic material such as alumina or a microwave dielectric ceramic such as BaTi409, Ba2Ti9O20, MgTi03-CaTi03, BaO-Ln203-TiO2, Bi203-ZnO-Nb205 or the like is preferable.
  • any material having a high dielectric constant and a low loss (typically having a dielectric constant greater than 30 and a loss tangent less than 0.01) is acceptable.
  • the medium body 1 of the present embodiment is a rectangular square column, and the four edges are rounded.
  • the resonator is not limited to such a shape, and the dielectric body 1 of the present invention may have any shape of a resonator of any type, such as a cylindrical shape, a square shape, a truncated cone shape, a square ladder, or any other rule or not.
  • the regular shape does not affect the characteristics of the resonator of the present invention, and is not limited herein.
  • the recessed hole 2 shown in Fig. 10 is a through hole, that is, the recessed hole 2 penetrates from one surface of the medium body 1 to the other surface.
  • the through hole of this embodiment is a cylindrical hole, and preferably the center line of the cylindrical hole is located on the central axis of the medium body 1, so that the electromagnetic field of the cavity is symmetrically distributed when the resonator is placed at the center of the cavity.
  • the through holes may also be cylindrical, square cylindrical, truncated, square, tapered or other regular or irregular shapes, or conformal to the outer contour of the dielectric body 1 such that the dielectric body 1 is of equal thickness.
  • the recessed hole 2 is not necessarily a through hole, and may be a blind hole, that is, a hole that does not penetrate to the other surface.
  • the blind hole may have the same shape as the above-mentioned through hole, but only has a short height, and may have other shapes such as a hemispherical shape, a tetrahedral shape, and the like, which are not limited herein.
  • the conductive material of the first conductive layer 4 and the second conductive layer 3 is preferably a metal such as silver, copper or gold, or an alloy containing one or two or three of silver, copper or gold, and may be other Metal material or other metal alloy.
  • the electrically conductive material may also be an electrically conductive non-metal such as conductive graphite, indium tin oxide or aluminized zinc oxide.
  • the first conductive layer 4 and the second conductive layer 3 may be directly attached to the inner wall of the medium body and the inner wall of the concave hole as described above, or may be respectively disposed on the outer wall of the medium body and inside the concave hole 2 through a connecting medium. For example, other methods such as adhesive bonding or connecting rods are used.
  • first conductive layer 4 and the second conductive layer 3 may be made of the same conductive material or different conductive materials.
  • the first conductive layer 4 and the second conductive layer 3 may partially or integrally cover the outer wall surface and the inner side wall surface of the dielectric body 1.
  • the first conductive layer 4 may be a whole piece of conductive foil, or may be a plurality of conductive foil structures having a certain geometric shape, for example, a plurality of sequentially spaced strips, squares, and wafers. Elliptical, etc., or other complex shapes, such as the snowflake type shown in Figure 11, can also be a "work" font, a "ten" shape. These foil structures can be arranged regularly or randomly. This is also the case for the second conductive layer 3. The foil structure of the two can be regularly set, such as parallel, symmetrical, etc., or can be randomly set.
  • the medium body 1 is a cylindrical shape having a uniform hook shape, and the concave hole in the middle is a through hole.
  • the second conductive layer 3 is a metal cylinder having a certain thickness, and the bottom portion is provided with a flange, and the dielectric body 1 is sleeved outside the second conductive layer 3 and the bottom surface can be placed just on the flange.
  • the metal cylinder does not necessarily have a flange, and may have only a cylindrical structure and be fixed to the bottom of the cavity by bonding or the like.
  • the second conductive layer 3 may cover the inner wall surface of the entire recessed hole 2, and may be a partial surface of the inner wall of the recessed hole 2, for example, a side surface covering only the inner wall of the recessed hole 2, that is, an inner wall connected to the open end surface of the recessed hole 2. It is also possible to cover only the bottom surface of the recessed hole 2, that is, the inner wall portion which is not connected to the open end of the recessed hole 2, or the partial portion of the side surface and the partial portion of the bottom surface.
  • the first conductive layer 4 may cover the entire surface of the outer side wall of the resonator or may be a partial surface of the outer side wall of the resonator.
  • the cavity is shown in Fig. 12 and Fig. 13, and includes a cavity 6, a resonator, and a tuning rod 5.
  • the cavity 6 includes a cavity and a cavity cover mounted at the open end of the cavity.
  • the cavity and the cavity cover form a closed space.
  • the resonator is located in the closed space, and the bottom portion thereof can pass through a low loss material (such as oxidation). Aluminum, etc.)
  • the support is made to support the resonator.
  • a tuning rod 5 is mounted on the cavity or chamber cover, and the end of the tuning rod 5 projects into the enclosed space and at least partially projects into the recess 2 of the resonator.
  • the tuning rod 5 is typically a metal screw that is mounted on the chamber cover by a nut and has an adjustable length that extends into the chamber to adjust the resonant frequency of the resonant cavity over a small range.
  • the tuning rod 5 can also be made of ceramic material Or, a metal or ceramic or other high dielectric constant material is wrapped on the outer surface of the rod made of a low loss material.
  • the tuning rod 4 may also be made of a non-metallic material as long as its dielectric constant is greater than 1, and a material having a higher dielectric constant is of course preferable.
  • the present invention does not limit the material and shape of the tuning rod 4 as long as it protrudes into the cavity 6 to perturb the electromagnetic field distribution in the cavity to affect the resonant frequency.
  • the end of the tuning rod 5 may be in direct contact with the inner wall of the recess 2 or the second conductive layer 3.
  • the bottom surface of the dielectric body 1 that is in contact with the cavity 6 may be provided with a conductor connection layer, which is the same as or different from the first conductive layer 4 or the second conductive layer 3 described above.
  • the conductor material is made of a material and is connected to the second conductive layer 3 on the inner wall of the through hole.
  • the conductor connection layer may be integrally bonded to the cavity 6 by heat pressing or soldering or other known connection technique.
  • the medium body 1 may be provided with two or more than two recessed holes 2, and at least one of the recessed holes 2 corresponds to a tuning rod 5.
  • the cavity is cylindrical.
  • the ceramic dielectric resonator is made of microwave dielectric ceramic.
  • the size is 24mm outer diameter, 8mm inner diameter, 16mm high, and inner diameter corresponding to the through hole.
  • the cylinder was experimentally measured to have a resonant frequency of 1.673 GHz for the resonator having the resonator.
  • the same cavity and resonator (the above-mentioned pure ceramic dielectric resonator is used as the dielectric body of the resonator in this example), and the outer wall of the resonator is plated with silver (ie, the first conductive layer in this example) while the through hole Also (i.e., the recessed hole in this example) was plated with silver (i.e., the second conductive layer in this example), and it was experimentally measured that the resonant frequency of the resonator having the resonator was lowered to 0.670 GHz.
  • the resonant frequency can be reduced by about 1 GHz, which is less than half of the original resonant frequency, which means that when a resonant cavity of the same resonant frequency is prepared, the volume of the cavity is greatly reduced.
  • the present invention also relates to a filter device, which may be a band pass filter, a band stop filter, a high pass filter, a low pass filter or a multi-band filter, a duplexer or the like.
  • the filter shown in Fig. 14 is a filter having six resonators.
  • the input end 8 and the output end 9 are respectively arranged at two ends of the cavity 6.
  • the cavity and the cavity are completely intercommunicated, and no barrier is provided; at the same time, the plurality of resonators are connected in series through the bridge portion 7 as shown in FIG.
  • the bridging portion 7 may be made of the same material as the dielectric body 1, or may be made of a different material, and the direct bridging manner can enhance the coupling.
  • each window opening position is also provided with a coupling rod 10, and the coupling strength can also be adjusted by the length of the coupling rod 10 extending into the cavity.
  • electrical or magnetic coupling between the cavities of conventional filters can be applied to the present invention, such as disk coupling, metal rod coupling, and the like. As can be seen from FIG.
  • each resonator is as described above, the outer wall of the resonator is attached with the first conductive layer 4, and the resonator also has a recess 2 and a second conductive layer 3 attached to the inner wall of the recess 2. And each of the recessed holes 2 is correspondingly provided with a tuning rod 5 inserted into the recessed hole 2.
  • the present invention also protects an electromagnetic wave device having the above filter member, which may be any device that requires a filter device, such as an airplane, a radar, a base station, a satellite, or the like.
  • a filter device such as an airplane, a radar, a base station, a satellite, or the like.
  • These electromagnetic wave devices receive and transmit signals and filter them after reception or before transmission so that the received or transmitted signals satisfy the requirements. Therefore, the electromagnetic wave device further includes at least a signal transmitting module connected to the input end of the filter device, and filtering.
  • a signal receiving module connected to the output of the device.
  • the electromagnetic wave device is a base station
  • the base station includes a duplexer as a filter member
  • the duplexer includes a transmit band pass filter and a receive band pass filter.
  • the input end of the transmit bandpass filter is connected to the transmitter, and the output is connected to the base station antenna; the input end of the receive bandpass filter is connected to the base station antenna, and the output is connected to the receiver.
  • the signal transmitting module is a transmitter, and the signal receiving module is a base station antenna.
  • the signal transmitting module is a base station antenna, and the signal receiving module is a receiver.
  • the invention adopts a resonator having a conductive layer on the outer wall, which is advantageous for reducing the resonance frequency of the resonator having the resonator and withstanding high power, thereby greatly reducing the volume of the cavity, and the filter device and the electromagnetic wave device having the cavity The volume will also be significantly reduced.
  • the present invention relates to a resonator, a resonator having the resonator, a filter member, and an electromagnetic wave device, the resonator having a very low resonance frequency, and thus having a smaller volume than a conventional cavity of the same resonance frequency More, the filter member composed of the resonant cavity and the volume and weight of the electromagnetic wave device having the filter member can be effectively reduced.
  • the resonator of one embodiment includes two dielectric layers 3, both of which are cylindrical and nested inside and outside, and the dielectric layer 3 is cylindrical, which means that there is a hole 2 in the middle.
  • the structure of the hole 2 may be a through hole or a blind hole, which is not limited herein.
  • a conductive layer 1 is disposed between the two dielectric layers 3.
  • the dielectric layer 3 may be any material having a dielectric constant greater than 1, such as polytetrafluoroethylene, epoxy resin, F4B, FR4 material, etc., but the higher the dielectric constant and the smaller the loss tangent, the more favorable the electromagnetic resonance is. The resonance frequency is lowered.
  • a ceramic material such as alumina or a microwave dielectric ceramic such as BaTi409, Ba2Ti9O20, MgTi03-CaTi03, BaO-Ln203-TiO2, Bi203-ZnO-Nb205 or the like is preferable.
  • a high dielectric constant and a low loss usually a dielectric constant greater than 30, the loss tangent is less than 0.01).
  • the dielectric layer 3 of this embodiment is a rectangular square pillar, and the four ribs are rounded.
  • the resonator is not limited to this shape, and the dielectric layer 3 of the present invention may have any shape of a resonator of any type, such as a cylindrical shape, a square shape, a truncated cone shape, a square ladder, or any other regular or irregular shape.
  • the shape, which does not affect the characteristics of the resonator of the present invention, is not limited herein.
  • the electrically conductive material of the electrically conductive layer 1 is preferably a metal such as silver, copper or gold, or an alloy containing one or two or three of silver, copper or gold.
  • the conductive layer 1 may also be other metal materials or other metal alloys.
  • the electrically conductive material may also be a non-metallic material that is electrically conductive, such as conductive graphite, indium tin oxide or aluminized zinc oxide.
  • the conductive layer 1 may also be in the form of a cylinder having a certain thickness and interposed between the two dielectric layers 3.
  • the dielectric layer 3 of the inner layer is cylindrical and has a bottom flange, and the conductive layer 1 and the dielectric layer 3 of the outer layer are both cylindrical and are placed on the inner dielectric layer 3 and placed therein. On the flange.
  • the conductive layer 1 is a thin conductive foil of a thin thickness attached to the surface between the two dielectric layers 3 or plated onto the surface.
  • the annular conductive foil does not necessarily cover the entire surface between the two dielectric layers 3, but may cover only a portion.
  • the annular conductive foil may be in the form of a complete sheet, or may be provided with a hollow therein, for example, an elongated slit, a hollow mesh, or the like.
  • the conductive layer 1 may also not be a complete ring, and is composed of a plurality of identical or different conductive foils, each of which constitutes an artificial microstructure.
  • Each of the conductive layers 1 includes a plurality of artificial microstructures that are not electrically connected to each other, and each of the artificial microstructures has a geometric pattern structure made of a conductive material.
  • the conductive layer 1 includes a plurality of snowflake-type artificial microstructures.
  • the artificial microstructure can also be other shapes, such as a circular ring, an I-shape, a square shape, and the like.
  • the resonator of the present invention is not limited to the dielectric layer 3 having only two layers. As shown in Figs. 20, 21, and 22, the resonator may further include a structure of more than two dielectric layers 3.
  • a plurality of dielectric layers 3 and conductive layers 1 are provided, and the dielectric layer 3 and the conductive layer 1 are alternately disposed.
  • Each of the dielectric layers is cylindrical and sequentially jacketed, and a conductive layer is disposed between any adjacent two cylindrical dielectric cylinders.
  • the conductive layer 1 may be a cylindrical shape having a certain thickness, and may be an inner jacket alternately with the dielectric layer 3, or may be a thin conductive foil.
  • the resonator of the present invention has various forms.
  • the heights of the different dielectric layers 3 may or may not be the same.
  • the dielectric layer 3 shown in Fig. 21 is descended from the outside to the inside, and the height of the conductive layer 1 is also successively decreased. vice versa.
  • the heights of the dielectric layer 3 and the conductive layer 1 can be arbitrarily set according to actual needs.
  • the relative positions of the different conductive layers 3 on the respective two dielectric layers 3 may also be the same or not identical.
  • the conductive layer 3 shown in FIG. 21 covers the maximum area of contact between adjacent dielectric layers.
  • the area of each contact surface may be partially covered, or the height of the conductive layer 1 may gradually rise from the outside to the inside. Drop, or random settings, etc., this article does not limit.
  • the conductive layer between adjacent dielectric layers 3 is a separate conductive layer, and each conductive layer may be an integral annular foil or one or more artificial microstructures.
  • the artificial microstructures in each conductive layer may be the same or different.
  • the artificial microstructures of the different conductive layers may also be the same or not identical.
  • Figures 22 and 23 show the case where the artificial microstructures are all the same, and the cases are not exactly the same.
  • the cavity is shown in Fig. 24 and includes a cavity 6, a resonator and a tuning rod 5.
  • the cavity 6 includes a cavity and a cavity cover mounted at the open end of the cavity, and the cavity and the cavity cover define a closed space, and the resonator is located in the closed space.
  • a tuning rod 5 is mounted on the cavity or chamber cover, and the end of the tuning rod 5 extends into the enclosed space and at least partially extends into the cylindrical resonator for tuning.
  • the tuning rod 5 is typically a metal screw that is mounted on the chamber cover by a nut and has a length that extends into the chamber to adjust the resonant frequency of the cavity over a small range.
  • the tuning rod 5 can also be made of a ceramic material or a metal or ceramic or other high dielectric constant material coated on the outer surface of a rod made of a low loss material.
  • the tuning rod 4 may also be made of a non-metallic material as long as its dielectric constant is greater than 1, and a material having a higher dielectric constant is of course preferable.
  • the present invention does not limit the material and shape of the tuning rod 4 as long as it protrudes into the cavity 6 to perturb the electromagnetic field distribution in the cavity to affect the resonant frequency.
  • the end of the tuning rod 5 can be in direct contact with the inner wall of the recess 2 or the second conductive layer 3.
  • a bottom surface of the dielectric layer 3 in contact with the cavity 6 may be provided with a conductor connection layer made of the same or different conductor material as the conductive layer 3 and a second conductive layer on the inner wall of the through hole. 3 connected.
  • the conductor connection layer may be integrally bonded to the cavity 6 by heat pressing or soldering or other known connection technique.
  • the cavity is cylindrical.
  • the ceramic dielectric resonator is made of microwave dielectric ceramic.
  • the size is 24mm outer diameter, 8mm inner diameter, 16mm high, and inner diameter corresponding to the through hole.
  • the cylinder was experimentally measured to have a resonant frequency of 1.673 GHz for the resonator having the resonator.
  • the ceramic dielectric resonator is divided into an outer dielectric layer 3 having an outer diameter of 24 mm and an inner diameter of 16 mm, and an inner dielectric layer 3 having an outer diameter of 15 mm and an inner diameter of 8 mm coaxially disposed therein.
  • An annular conductive layer 1 having a thickness of 1 mm is provided therebetween, and the resonance frequency of the resonant cavity having the resonator is experimentally measured to be 1.24 GHz. It can be seen that with the resonator of the present invention, the resonant frequency can be reduced by about 400 MHz, which means that when a resonant cavity of the same resonant frequency is prepared, the cavity The volume of the body will be greatly reduced.
  • the ceramic dielectric resonator is divided into an outermost dielectric layer 3 having an outer diameter of 24 mm and an inner diameter of 21 mm, an intermediate dielectric layer 3 having an outer diameter of 20 mm and an inner diameter of 15 mm, and an outer diameter of 14 mm and an inner diameter of 8 mm.
  • a conductive layer having a thickness of 1 mm is disposed between adjacent dielectric layers, and the measured resonance frequency is reduced to 0.58 GHz. Then the resonant frequency is less than half the frequency of the pure ceramic resonator.
  • the resonant frequency can be greatly reduced, so that the volume of the resonant cavity can be greatly reduced under the condition of achieving the same resonant frequency.
  • the present invention also relates to a filter device, which may be a band pass filter, a band stop filter, a high pass filter, a low pass filter or a multi-band filter, a duplexer or the like.
  • the present invention also protects an electromagnetic wave device having the above filter member, which may be any device that requires a filter device, such as an airplane, a radar, a base station, a satellite, or the like.
  • a filter device such as an airplane, a radar, a base station, a satellite, or the like.
  • These electromagnetic wave devices receive and transmit signals and filter them after reception or before transmission so that the received or transmitted signals satisfy the requirements. Therefore, the electromagnetic wave device further includes at least a signal transmitting module connected to the input end of the filter device, and filtering.
  • a signal receiving module connected to the output of the device.
  • the electromagnetic wave device is a base station, and the base station includes a duplexer as a filter member, and the duplexer includes a transmit band pass filter and a receive band pass filter.
  • the input end of the transmit bandpass filter is connected to the transmitter, and the output is connected to the base station antenna; the input end of the receive bandpass filter is connected to the base station antenna, and the output is connected to the receiver.
  • the signal transmitting module is a transmitter, and the signal receiving module is a base station antenna.
  • the signal transmitting module is a base station antenna, and the signal receiving module is a receiver.
  • the conductive layer is an annular cylindrical structure, which is advantageous for reducing the resonant frequency of the resonant cavity having the resonator, thereby greatly reducing the volume of the resonant cavity, and having the resonant cavity
  • the volume of the filter components and electromagnetic wave devices is also significantly reduced.

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Abstract

The present invention relates to an oscillator, a resonant cavity, a filter device, and an electromagnetic device. The oscillator comprises a medium body or at least two medium layers. An electrically conductive layer is provided on the medium body. An electrically conductive layer is provided between the two adjacent medium layers. The present invention adopts an oscillator having an electrically conductive layer, which helps to lower a resonance frequency of a resonant cavity having the oscillator, so that the volume of the resonant cavity is greatly reduced, and the volume of a filter device and an electromagnetic device having the resonant cavity is also clearly reduced accordingly.

Description

一种谐振子、 谐振腔、 滤波器件及电磁波设备 技术领域 本发明涉及射频元器件及其设备， 更具体地说， 涉及一种谐振子、 谐振腔、 滤波 器件及电磁波设备。 背景技术 传统金属谐振子滤波器体积小且可实现较低频率的谐振， 但是体积小会导致无法 承受较高的功率。 传统的介质谐振子滤波器可以承受高功率， 但是如果要实现低频谐 振， 则介质谐振子的体积以及金属腔的体积会比较大， 不满足滤波器小型化的需求。 如何设计出一种谐振频率低、 体积小且耐高功率的谐振子及其滤波器， 是需要解决的 一个问题。 发明内容 本发明的一个目的在于， 针对现有技术的上述缺陷， 提供一种谐振频率 低、 体积小且耐高功率的谐振子、 谐振腔、 滤波器件及电磁波设备。  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio frequency component and an apparatus therefor, and more particularly to a resonator, a resonant cavity, a filter device, and an electromagnetic wave device. BACKGROUND OF THE INVENTION Conventional metal resonator filters are small in size and can achieve resonance at lower frequencies, but small size can result in unacceptable higher power. Conventional dielectric resonator filters can withstand high power, but if low-frequency resonance is to be achieved, the volume of the dielectric resonator and the volume of the metal cavity will be large, which does not meet the needs of miniaturization of the filter. How to design a harmonic oscillator with low resonance frequency, small volume and high power resistance and its filter is a problem to be solved. SUMMARY OF THE INVENTION An object of the present invention is to provide a resonator, a resonant cavity, a filter device, and an electromagnetic wave device having a low resonance frequency, a small volume, and high power resistance in view of the above-described drawbacks of the prior art.
本发明解决其技术问题所采用的技术方案是： 构造一种谐振子， 包括介 质本体， 所述介质本体表面上开设有凹孔， 所述凹孔内设置有导电材料构成 的导电层。  The technical solution adopted by the present invention to solve the technical problem is as follows: A resonator is constructed, including a dielectric body, and a concave hole is formed in a surface of the dielectric body, and a conductive layer made of a conductive material is disposed in the concave hole.
在本发明所述的谐振子中 ， 所述导电层直接附着在所述凹孔内壁上。 在本发明所述的谐振子中， 所述导电层通过连接媒介固定在所述凹孔内 壁的侧面或底面上。  In the resonator of the present invention, the conductive layer is directly attached to the inner wall of the recess. In the resonator of the present invention, the conductive layer is fixed to the side surface or the bottom surface of the inner wall of the recessed hole by a connecting medium.
在本发明所述的谐振子中 ，所述介质本体由介电常数大于 1的材料制成。 在本发明所述的谐振子中 ， 所述介质本体由陶瓷材料制成。  In the resonator of the present invention, the dielectric body is made of a material having a dielectric constant greater than 1. In the resonator of the present invention, the medium body is made of a ceramic material.
在本发明所述的谐振子中 ， 所述导电层为金属筒， 所述介质本体为筒状 且套设在所述金属筒外。  In the resonator of the present invention, the conductive layer is a metal cylinder, and the medium body is cylindrical and sleeved outside the metal cylinder.
在本发明所述的谐振子中 ， 所述凹孔为盲孔或通孔。  In the resonator of the present invention, the recessed hole is a blind hole or a through hole.
在本发明所述的谐振子中 ， 所述凹孔为圆形孔、 方形孔、 圆台形孔、 方 台形孔、 锥形孔或不规则形状。  In the resonator of the present invention, the recessed holes are circular holes, square holes, truncated holes, square holes, tapered holes or irregular shapes.
在本发明所述的谐振子中， 所述导电层覆盖所述凹孔内壁的侧面或底面 或覆盖所述凹孔的整个内壁表面。 In the resonator of the present invention, the conductive layer covers a side surface or a bottom surface of the inner wall of the recessed hole Or covering the entire inner wall surface of the recess.
在本发明所述的谐振子中， 所述导电层的导电材料为金属。  In the resonator of the present invention, the conductive material of the conductive layer is a metal.
在本发明所述的谐振子中， 所述导电材料为银、 铜或金， 或者为含有银、 铜或金中一种或两种或三种的合金。  In the resonator of the present invention, the conductive material is silver, copper or gold, or an alloy containing one or two or three of silver, copper or gold.
在本发明所述的谐振子中， 所述导电层的导电材料为导电的非金属。 在本发明所述的谐振子中， 所述导电材料为导电石墨、 铟锡氧化物或渗 铝氧化锌。  In the resonator of the present invention, the conductive material of the conductive layer is a conductive non-metal. In the resonator of the present invention, the conductive material is conductive graphite, indium tin oxide or aluminized zinc oxide.
本发明还涉及一种谐振腔， 包括腔体、 位于所述腔体内的谐振子， 所述 谐振子为上述的谐振子，其包括介质本体，所述介质本体表面上开设有凹孔， 所述凹孔内壁上附着有导电材料构成的导电层。  The present invention also relates to a resonant cavity including a cavity, a resonator located in the cavity, the resonator being the above-mentioned resonator, comprising a dielectric body having a recessed hole in the surface of the medium body, A conductive layer made of a conductive material is attached to the inner wall of the recess.
在本发明所述的谐振腔中， 所述谐振腔还包括装在所述腔体上并伸入所 述腔体内起调谐所用的调谐杆， 所述调谐杆与所述凹孔相向设置。  In the resonant cavity of the present invention, the resonant cavity further includes a tuning rod mounted for tuning on the cavity and extending into the cavity, the tuning rod being disposed opposite the recess.
在本发明所述的谐振腔中， 所述介质本体上设有至少两个凹孔， 与每个 凹孔相对的位置均设有一个调谐杆。  In the resonant cavity of the present invention, at least two recessed holes are provided in the medium body, and a tuning rod is disposed at a position opposite to each of the recessed holes.
在本发明所述的谐振腔中， 所述调谐杆为介电常数大于 1 的非金属材料 制成的螺杆或者为金属螺杆。  In the resonator of the present invention, the tuning rod is a screw made of a non-metallic material having a dielectric constant greater than 1, or a metal screw.
在本发明所述的谐振腔中， 所述凹孔为通孔， 与所述通孔相连接的介质 本体表面上附着有导体连接层。  In the resonator according to the present invention, the recessed hole is a through hole, and a conductor connecting layer is attached to a surface of the dielectric body connected to the through hole.
在本发明所述的谐振腔中， 所述导体连接层与所述谐振腔的内壁通过焊 接或热压或螺纹配合或粘接的方式固定连接为一体。  In the resonant cavity of the present invention, the conductor connecting layer and the inner wall of the resonant cavity are fixedly connected by welding or hot pressing or screwing or bonding.
本发明还涉及一种滤波器件， 包括一个或多个谐振腔， 至少一个谐振腔 为上述谐振腔， 包括腔体、 位于所述腔体内的谐振子， 所述谐振子为上述谐 振子， 其包括介质本体， 所述介质本体表面上开设有凹孔， 所述凹孔内壁上 附着有导电材料构成的导电层。  The invention further relates to a filter device comprising one or more resonant cavities, at least one resonant cavity being the above-mentioned resonant cavity, comprising a cavity, a resonator located in the cavity, the harmonic oscillator being the above-mentioned resonator, which comprises The medium body has a recessed hole formed in the surface of the medium body, and a conductive layer made of a conductive material is attached to the inner wall of the recessed hole.
在本发明所述的滤波器件中， 所述滤波器件为滤波器或双工器。  In the filter device of the present invention, the filter device is a filter or a duplexer.
在本发明所述的滤波器件中， 所述谐振子的导电层与所述谐振腔接触以 接地。  In the filter device of the present invention, the conductive layer of the resonator is in contact with the resonant cavity to be grounded.
在本发明所述的滤波器件中， 所述滤波器件包括多个谐振腔， 每个谐振 腔内设置有一个所述谐振子， 每个谐振子的凹孔对应设置有一个调谐杆。  In the filter device of the present invention, the filter device includes a plurality of resonant cavities, and each of the resonant cavities is provided with one of the resonators, and a recessed hole of each of the resonators is correspondingly provided with a tuning rod.
在本发明所述的滤波器件中， 所述滤波器件的谐振腔与谐振腔之间为开 窗耦合， 且每个开窗位置均设置有耦合杆。 In the filter device of the present invention, the resonant cavity of the filter member is open between the resonant cavity and the resonant cavity. The windows are coupled, and each window opening position is provided with a coupling rod.
在本发明所述的滤波器件中， 所述滤波器件为带通滤波器、带阻滤波器、 高通滤波器、 低通滤波器或多频段滤波器。  In the filter device of the present invention, the filter device is a band pass filter, a band stop filter, a high pass filter, a low pass filter or a multi-band filter.
本发明还涉及一种电磁波设备， 包括上述的滤波器件。  The invention also relates to an electromagnetic wave device comprising the filter device described above.
在本发明所述的电磁波设备中， 所述电磁波设备为飞机、 雷达、 基站或 者卫星。  In the electromagnetic wave device of the present invention, the electromagnetic wave device is an airplane, a radar, a base station or a satellite.
实施本发明， 具有以下有益效果： 本发明由于采用具有导电层的谐振子， 有利于降低具有该谐振子的谐振腔的谐振频率，从而大大缩小谐振腔的体积， 具有该谐振腔的滤波器件和电磁波设备的体积也会随之明显减小。  The present invention has the following beneficial effects: The present invention is advantageous in that the resonant frequency of the resonant cavity having the resonant resonator is reduced by using a resonator having a conductive layer, thereby greatly reducing the volume of the resonant cavity, and the filter component having the resonant cavity and The volume of electromagnetic wave equipment will also be significantly reduced.
本发明的又一个目的在于， 针对现有技术的上述缺陷， 提供一种谐振频 率低、 体积小且耐高功率的谐振子、 谐振腔、 滤波器件及电磁波设备。  Still another object of the present invention is to provide a resonator, a resonant cavity, a filter device, and an electromagnetic wave device which have a low resonance frequency, a small volume, and a high power resistance in view of the above-described drawbacks of the prior art.
本发明解决其技术问题所采用的技术方案是： 一种谐振子， 包括介质本 体， 所述介质本体表面上开设有凹孔， 所述介质本体外侧壁设置有导电材料 构成的第一导电层。  The technical solution adopted by the present invention to solve the technical problem is as follows: A resonator, comprising a dielectric body, a recessed hole is formed in a surface of the medium body, and a first conductive layer made of a conductive material is disposed on a sidewall of the medium body.
在本发明所述的谐振子中， 所述第 导电层直接附着在所述介质本体外 侧壁。  In the resonator of the present invention, the first conductive layer is directly attached to the outer wall of the medium body.
在本发明所述的谐振子中， 所述第 导电层通过连接媒介固定在所述介 质本体外侧壁。 在本发明所述的谐振子中， 所述第 导电层覆盖所述介质本体的外侧壁 的全部或局部表面上。  In the resonator of the present invention, the first conductive layer is fixed to the outer wall of the dielectric body by a connection medium. In the resonator of the present invention, the first conductive layer covers all or part of the surface of the outer sidewall of the dielectric body.
在本发明所述的谐振子中， 所述第 导电层为金属筒， 所述介质本体为 筒状且内置在所述金属筒内。  In the resonator of the present invention, the first conductive layer is a metal cylinder, and the medium body is cylindrical and built in the metal cylinder.
在本发明所述的谐振子中， 所述凹孔内壁上设置有导电材料构成的第二 导电层。  In the resonator of the present invention, the inner wall of the recessed hole is provided with a second conductive layer made of a conductive material.
在本发明所述的谐振子中，所述第二导电层直接附着在所述凹孔内壁上。 在本发明所述的谐振子中， 所述第二导电层通过连接媒介固定在所述凹 孔内壁的侧面或底面上。  In the resonator of the present invention, the second conductive layer is directly attached to the inner wall of the recess. In the resonator of the present invention, the second conductive layer is fixed to the side surface or the bottom surface of the inner wall of the recess by a connecting medium.
在本发明所述的谐振子中， 所述第二导电层为金属筒， 所述介质本体为 筒状且套设在所述金属筒外。  In the resonator of the present invention, the second conductive layer is a metal cylinder, and the medium body is cylindrical and sleeved outside the metal cylinder.
在本发明所述的谐振子中， 所述第二导电层覆盖在所述凹孔内壁的侧面 或底面上， 或者所述第二导电层覆盖在所述凹孔内壁的整个内壁表面上。 在本发明所述的谐振子中，所述介质本体由介电常数大于 1的材料制成。 在本发明所述的谐振子中， 所述介质本体由陶瓷材料制成。 In the resonator of the present invention, the second conductive layer covers a side of the inner wall of the recessed hole Or on the bottom surface, or the second conductive layer covers the entire inner wall surface of the inner wall of the recessed hole. In the resonator of the present invention, the dielectric body is made of a material having a dielectric constant greater than one. In the resonator of the present invention, the medium body is made of a ceramic material.
在本发明所述的谐振子中， 所述凹孔为盲孔或通孔。  In the resonator of the present invention, the recessed hole is a blind hole or a through hole.
在本发明所述的谐振子中， 所述导电材料为金属。  In the resonator of the present invention, the conductive material is a metal.
在本发明所述的谐振子中， 所述导电材料为银、 铜或金， 或者为含有银、 铜或金中一种或两种或三种的合金。  In the resonator of the present invention, the conductive material is silver, copper or gold, or an alloy containing one or two or three of silver, copper or gold.
在本发明所述的谐振子中， 所述导电材料为导电的非金属。  In the resonator of the present invention, the conductive material is a conductive non-metal.
在本发明所述的谐振子中， 所述导电材料为导电石墨、 铟锡氧化物或渗 铝氧化锌。  In the resonator of the present invention, the conductive material is conductive graphite, indium tin oxide or aluminized zinc oxide.
一种谐振腔， 包括腔体、 位于所述腔体内的谐振子， 所述谐振子为上述 所述的谐振子， 其包括介质本体， 所述介质本体表面上开设有凹孔， 所述介 质本体外侧壁设置有导电材料构成的第一导电层。  A resonant cavity includes a cavity, a resonator located in the cavity, the resonator is a resonator as described above, and includes a dielectric body, a surface of the dielectric body is provided with a concave hole, and the dielectric body The outer sidewall is provided with a first conductive layer of a conductive material.
在本发明所述的谐振腔中， 所述凹孔内壁上设置有导电材料构成的第二 导电层。  In the resonant cavity of the present invention, the inner wall of the recessed hole is provided with a second conductive layer made of a conductive material.
在本发明所述的谐振腔中， 所述谐振腔还包括装在所述腔体上并伸入所 述腔体腔内起调谐所用的调谐杆， 所述调谐杆与所述凹孔相向设置。  In the resonant cavity of the present invention, the resonant cavity further includes a tuning rod mounted on the cavity and extending into the cavity cavity for tuning, the tuning rod being disposed opposite the recessed hole.
在本发明所述的谐振腔中， 所述介质本体上设有至少两个凹孔， 与每个 凹孔相对的位置均设有一个调谐杆。  In the resonant cavity of the present invention, at least two recessed holes are provided in the medium body, and a tuning rod is disposed at a position opposite to each of the recessed holes.
在本发明所述的谐振腔中， 所述调谐杆为介电常数大于 1 的非金属材料 制成的螺杆或者为金属螺杆。  In the resonator of the present invention, the tuning rod is a screw made of a non-metallic material having a dielectric constant greater than 1, or a metal screw.
在本发明所述的谐振腔中， 所述凹孔为通孔， 与所述通孔相连接的介质 本体表面上附着有导体连接层。  In the resonator according to the present invention, the recessed hole is a through hole, and a conductor connecting layer is attached to a surface of the dielectric body connected to the through hole.
在本发明所述的谐振腔中， 所述导体连接层与所述谐振腔的内壁通过焊 接或热压或螺纹配合或粘接的方式固定连接为一体。  In the resonant cavity of the present invention, the conductor connecting layer and the inner wall of the resonant cavity are fixedly connected by welding or hot pressing or screwing or bonding.
一种滤波器件， 包括一个或多个谐振腔， 至少一个谐振腔为上述所述的 谐振腔。  A filter device comprising one or more resonant cavities, at least one of which is a resonant cavity as described above.
在本发明所述的滤波器件中， 所述滤波器件为滤波器或双工器。  In the filter device of the present invention, the filter device is a filter or a duplexer.
在本发明所述的滤波器件中， 所述谐振子的第二导电层与所述谐振腔接 触以接地。 在本发明所述的滤波器件中， 所述滤波器件包括多个谐振腔， 每个谐振 腔内设置有一个所述谐振子， 每个谐振子的凹孔对应设置有一个调谐杆。 In the filter device of the present invention, the second conductive layer of the resonator is in contact with the resonant cavity to be grounded. In the filter device of the present invention, the filter device includes a plurality of resonant cavities, and each of the resonant cavities is provided with one of the resonators, and a recessed hole of each of the resonators is correspondingly provided with a tuning rod.
在本发明所述的滤波器件中， 所述滤波器件的谐振腔与谐振腔之间为开 窗耦合， 且每个开窗位置均设置有耦合杆。  In the filter device of the present invention, the resonant cavity of the filter member is coupled to the resonant cavity by a window, and each of the window opening positions is provided with a coupling rod.
在本发明所述的滤波器件中， 所述滤波器件为带通滤波器、带阻滤波器、 高通滤波器、 低通滤波器或多频段滤波器。  In the filter device of the present invention, the filter device is a band pass filter, a band stop filter, a high pass filter, a low pass filter or a multi-band filter.
一种电磁波设备， 包括信号发射模块、 信号接收模块以及滤波器件， 所 述滤波器件的输入端与所述信号发射模块连接，输出端与信号接收模块连接， 所述滤波器件为上述所述的滤波器件。  An electromagnetic wave device, comprising: a signal transmitting module, a signal receiving module and a filter component, wherein an input end of the filter component is connected to the signal transmitting module, an output end is connected to a signal receiving module, and the filter component is the filtering described above Device.
在本发明所述的电磁波设备中， 所述电磁波设备为飞机、 雷达、 基站或 者卫星。  In the electromagnetic wave device of the present invention, the electromagnetic wave device is an airplane, a radar, a base station or a satellite.
实施本发明， 具有以下有益效果： 本发明采用的谐振子外侧壁和凹孔内 壁都附着有导电层， 有利于降低具有该谐振子的谐振腔的谐振频率， 从而大 大缩小谐振腔的体积， 具有该谐振腔的滤波器件和电磁波设备的体积也会随 之明显减小。  The present invention has the following beneficial effects: The outer side wall of the resonator and the inner wall of the concave hole are adhered with a conductive layer, which is advantageous for reducing the resonant frequency of the resonant cavity having the resonator, thereby greatly reducing the volume of the resonant cavity, The volume of the filter element and the electromagnetic wave device of the resonant cavity is also significantly reduced.
本发明的又一个目的在于， 针对现有技术的上述缺陷， 提供一种谐振频 率低、 体积小且耐高功率的谐振子、 谐振腔、 滤波器件及电磁波设备。  Still another object of the present invention is to provide a resonator, a resonant cavity, a filter device, and an electromagnetic wave device which have a low resonance frequency, a small volume, and a high power resistance in view of the above-described drawbacks of the prior art.
本发明解决其技术问题所采用的技术方案是： 一种谐振子， 包括至少两 个介质层， 相邻的两个所述介质层之间设有导电层。  The technical solution adopted by the present invention to solve the technical problem thereof is as follows: A resonator comprising at least two dielectric layers, and a conductive layer is disposed between two adjacent dielectric layers.
在本发明所述的谐振子中， 所述介质层和导电层均有多个， 且所述介质 层与导电层交替地设置。  In the resonator of the present invention, the dielectric layer and the conductive layer are both plural, and the dielectric layer and the conductive layer are alternately disposed.
在本发明所述的谐振子中， 所述多个介质层均为筒状且依次内外套设， 任意相邻两筒状介质筒之间均设有导电层。  In the resonator of the present invention, the plurality of dielectric layers are all cylindrical and sequentially jacketed, and a conductive layer is disposed between any adjacent two cylindrical dielectric cylinders.
在本发明所述的谐振子中， 所述导电层为筒状， 且与所述至少两个介质 层依次交替的内外套设。  In the resonator of the present invention, the conductive layer is cylindrical and is provided with an inner jacket alternately alternating with the at least two dielectric layers.
在本发明所述的谐振子中， 每个所述导电层为一环状导电箔片。  In the resonator of the present invention, each of the conductive layers is an annular conductive foil.
在本发明所述的谐振子中， 每个所述导电层包括至少一个人造微结构。 在本发明所述的谐振子中， 每个所述导电层包括多个互不电连接的人造 微结构， 每个人造微结构为导电材料制成的具有几何图案的结构。  In the resonator of the present invention, each of the conductive layers includes at least one artificial microstructure. In the resonator of the present invention, each of the conductive layers includes a plurality of artificial microstructures that are not electrically connected to each other, and each of the artificial microstructures has a geometric pattern structure made of a conductive material.
在本发明所述的谐振子中， 不同介质层的高度相同或者不完全相同。 在本发明所述的谐振子中， 不同导电层的相对位置相同或不完全相同。 在本发明所述的谐振子中，不同导电层的人造微结构相同或不完全相同。 在本发明所述的谐振子中， 所述介质层由介电常数大于 1的材料制成。 在本发明所述的谐振子中， 所述介质层由介电常数大于 30的材料制成。 在本发明所述的谐振子中， 所述介质层由陶瓷材料制成。 In the resonator of the present invention, the heights of the different dielectric layers are the same or not identical. In the resonator of the present invention, the relative positions of the different conductive layers are the same or not identical. In the resonator of the present invention, the artificial microstructures of the different conductive layers are the same or not identical. In the resonator of the present invention, the dielectric layer is made of a material having a dielectric constant greater than 1. In the resonator of the present invention, the dielectric layer is made of a material having a dielectric constant greater than 30. In the resonator of the present invention, the dielectric layer is made of a ceramic material.
在本发明所述的谐振子中， 所述导电层的导电材料为金属。  In the resonator of the present invention, the conductive material of the conductive layer is a metal.
在本发明所述的谐振子中， 所述导电材料为银、 铜或金， 或者为含有银、 铜或金中一种或两种或三种的合金。  In the resonator of the present invention, the conductive material is silver, copper or gold, or an alloy containing one or two or three of silver, copper or gold.
在本发明所述的谐振子中， 所述导电层的导电材料为非金属。  In the resonator of the present invention, the conductive material of the conductive layer is a non-metal.
在本发明所述的谐振子中， 所述导电材料为导电石墨、 铟锡氧化物或渗 铝氧化锌。  In the resonator of the present invention, the conductive material is conductive graphite, indium tin oxide or aluminized zinc oxide.
在本发明所述的谐振子中， 所述导电层直接附着于相邻两介质层表面或 者与之间隔设置。  In the resonator of the present invention, the conductive layer is directly attached to or spaced apart from the surface of the adjacent two dielectric layers.
本发明还涉及一种谐振腔， 包括腔体、 位于所述腔体内的上述谐振子， 其包括至少两个介质层， 相邻的两个所述介质层之间设有导电层。  The invention further relates to a resonant cavity comprising a cavity, said harmonic oscillator located within said cavity, comprising at least two dielectric layers, a conductive layer being disposed between two adjacent said dielectric layers.
在本发明所述的谐振腔中， 所述至少两个介质层均为筒状且依次内外套 设， 任意相邻两筒状介质筒之间均设有导电层。  In the resonant cavity of the present invention, the at least two dielectric layers are all cylindrical and sequentially jacketed, and a conductive layer is disposed between any adjacent two cylindrical dielectric cylinders.
在本发明所述的谐振腔中， 所述谐振腔还包括装在所述腔体上并伸入所 述腔体内起调谐所用的调谐杆， 所述调谐杆与所述凹孔相向设置。  In the resonant cavity of the present invention, the resonant cavity further includes a tuning rod mounted for tuning on the cavity and extending into the cavity, the tuning rod being disposed opposite the recess.
在本发明所述的谐振腔中， 所述调谐杆为介电常数大于 1 的非金属材料 制成的螺杆。  In the resonator of the present invention, the tuning rod is a screw made of a non-metallic material having a dielectric constant greater than one.
在本发明所述的谐振腔中， 所述调谐杆为金属螺杆。  In the resonant cavity of the present invention, the tuning rod is a metal screw.
在本发明所述的谐振腔中， 所述介质层底部附着有导体连接层。  In the resonant cavity of the present invention, a conductor connection layer is attached to the bottom of the dielectric layer.
在本发明所述的谐振腔中， 所述导体连接层与所述谐振腔的内壁通过焊 接或热压或螺纹配合或粘接的方式固定连接为一体。  In the resonant cavity of the present invention, the conductor connecting layer and the inner wall of the resonant cavity are fixedly connected by welding or hot pressing or screwing or bonding.
在本发明所述的谐振腔中， 每个所述导电层包括至少一个人造微结构。 本发明还涉及一种滤波器件， 包括一个或多个谐振腔， 至少一个谐振腔 为上述的谐振腔。  In the resonant cavity of the present invention, each of the electrically conductive layers includes at least one artificial microstructure. The invention further relates to a filter device comprising one or more resonant cavities, at least one of which is a resonant cavity as described above.
在本发明所述的滤波器件中， 所述滤波器件为滤波器或双工器。 在本发明所述的滤波器件中， 所述导电层与所述谐振腔接触以接地。 在本发明所述的滤波器件中， 所述滤波器件包括多个谐振腔， 每个谐振 腔内设置有一个所述谐振子， 每个谐振子对应设置有一个调谐杆。 In the filter device of the present invention, the filter device is a filter or a duplexer. In the filter device of the present invention, the conductive layer is in contact with the resonant cavity to be grounded. In the filter device of the present invention, the filter device includes a plurality of resonant cavities, and each of the resonant cavities is provided with one of the resonators, and each of the resonators is correspondingly provided with a tuning rod.
在本发明所述的滤波器件中， 所述滤波器件的谐振腔与谐振腔之间为开 窗耦合， 且每个开窗位置均设置有耦合杆。  In the filter device of the present invention, the resonant cavity of the filter member is coupled to the resonant cavity by a window, and each of the window opening positions is provided with a coupling rod.
在本发明所述的滤波器件中， 所述滤波器件为带通滤波器、带阻滤波器、 高通滤波器、 低通滤波器或多频段滤波器。  In the filter device of the present invention, the filter device is a band pass filter, a band stop filter, a high pass filter, a low pass filter or a multi-band filter.
本发明还涉及一种电磁波设备， 包括信号发射模块、 信号接收模块以及 滤波器件， 所述滤波器件的输入端与所述信号发射模块连接， 输出端与信号 接收模块连接， 所述滤波器件为上述所述的滤波器件。  The invention also relates to an electromagnetic wave device, comprising a signal transmitting module, a signal receiving module and a filter component, wherein an input end of the filter component is connected to the signal transmitting module, and an output end is connected to the signal receiving module, wherein the filter component is the above The filter element.
所述电磁波设备为飞机、 雷达、 基站或者卫星。 实施本发明， 具有以下有益效果： 本发明的谐振子采用内外两介质层之间设置导 电层的结构， 可获得一个谐振频率较低的模式， 有利于降低具有该谐振子的谐振腔的 谐振频率， 从而大大缩小谐振腔的体积， 具有该谐振腔的滤波器件和电磁波设备的体 积也会随之明显减小。 附图说明 下面将结合附图及实施例对本发明作进一步说明， 附图中：  The electromagnetic wave device is an airplane, a radar, a base station or a satellite. The present invention has the following beneficial effects: The resonator of the present invention adopts a structure in which a conductive layer is disposed between two inner and outer dielectric layers, and a mode with a lower resonant frequency can be obtained, which is advantageous for reducing the resonant frequency of the resonant cavity having the resonator. Therefore, the volume of the resonant cavity is greatly reduced, and the volume of the filter member and the electromagnetic wave device having the resonant cavity is also significantly reduced. BRIEF DESCRIPTION OF THE DRAWINGS The invention will be further described with reference to the accompanying drawings and embodiments in which:
图 1是本发明优选实施例的谐振子的俯视图；  Figure 1 is a plan view of a resonator of a preferred embodiment of the present invention;
图 2是图 1所示谐振子的半剖主视图；  Figure 2 is a half cross-sectional front view of the resonator shown in Figure 1;
图 3是另一实施例的谐振子的结构示意图；  3 is a schematic structural view of a resonator of another embodiment;
图 4是一实施例中的谐振腔的半剖俯视图；  Figure 4 is a half cross-sectional plan view of a resonant cavity in an embodiment;
图 5是图 4所示谐振腔的半剖主视图；  Figure 5 is a half cross-sectional front view of the resonant cavity shown in Figure 4;
图 6是一实施例中的滤波器件的 B-B剖面图；  Figure 6 is a cross-sectional view taken along line B-B of the filter member in an embodiment;
图 7是图 6所示滤波器件的 A-A剖面图；  Figure 7 is a cross-sectional view taken along line A-A of the filter member shown in Figure 6;
图 8为本发明的电磁波设备为基站时的局部结构示意图；  8 is a schematic partial structural view of the electromagnetic wave device of the present invention when it is a base station;
图 9是本发明优选实施例的谐振子的俯视图；  Figure 9 is a plan view of a resonator of a preferred embodiment of the present invention;
图 10是图 9所示谐振子的主视图；  Figure 10 is a front elevational view of the resonator shown in Figure 9;
图 11是本发明的谐振子的另一实施例的主视图； 12是一实施例中的谐振腔的俯视图； Figure 11 is a front elevational view showing another embodiment of the resonator of the present invention; 12 is a top view of a resonant cavity in an embodiment;
图 13是图 12所示谐振腔的主视图；  Figure 13 is a front elevational view of the resonant cavity of Figure 12;
图 14是一实施例中的滤波器件的 B-B剖面图；  Figure 14 is a cross-sectional view taken along line B-B of the filter member in an embodiment;
图 15是图 14所示滤波器件的 A-A剖面图；  Figure 15 is a cross-sectional view taken along line A-A of the filter member shown in Figure 14;
图 16为本发明的电磁波设备为基站时的局部结构示意图;  16 is a schematic partial structural diagram of an electromagnetic wave device of the present invention when it is a base station;
图 17是本发明第一实施例的谐振子的俯视图；  Figure 17 is a plan view of a resonator of a first embodiment of the present invention;
图 18是图 17所示谐振子的主视图；  Figure 18 is a front elevational view of the resonator shown in Figure 17;
图 19是本发明第二实施例的谐振子的剖视图；  Figure 19 is a cross-sectional view showing a resonator of a second embodiment of the present invention;
图 20是本发明第三实施例的谐振子的俯视图；  Figure 20 is a plan view of a resonator of a third embodiment of the present invention;
图 21是图 20所示实施例的剖视图；  Figure 21 is a cross-sectional view of the embodiment shown in Figure 20;
图 22是本发明第三实施例的谐振子的俯视图；  Figure 22 is a plan view of a resonator of a third embodiment of the present invention;
图 23是本发明第四实施例的谐振子的透视图；  Figure 23 is a perspective view of a resonator of a fourth embodiment of the present invention;
24是本发明的谐振腔的结构示意图； 图 25为本发明的电磁波设备的结构示意图。 具体实施方式 本发明涉及一种谐振子以及具有该谐振子的谐振腔、 滤波器件和电磁波 设备， 该谐振子使得谐振腔具有非常低的谐振频率， 因而与相同谐振频率的 传统谐振腔相比体积要小得多， 可以有效减小由谐振腔构成的滤波器件以及 具有该滤波器件的电磁波设备的体积和重量。  24 is a schematic structural view of a resonant cavity of the present invention; and FIG. 25 is a schematic structural view of an electromagnetic wave device of the present invention. DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a resonator and a resonant cavity having the same, a filter member and an electromagnetic wave device which have a resonant cavity having a very low resonant frequency and thus a volume compared to a conventional resonant cavity of the same resonant frequency To be much smaller, it is possible to effectively reduce the volume and weight of the filter member composed of the resonator and the electromagnetic wave device having the filter member.
其中一实施例的谐振子如图 1、 图 2所示， 包括介质本体 1， 介质本体 1 外表面上开设有向介质本体 1 内部凹陷的凹孔 2， 凹孔 2内壁的全部表面或 部分表面上附着有导电材料构成的导电层 3。  As shown in FIG. 1 and FIG. 2, the resonator of one embodiment includes a dielectric body 1. The outer surface of the dielectric body 1 is provided with a recess 2 for recessing the interior of the dielectric body 1, and all or part of the surface of the inner wall of the recess 2. A conductive layer 3 composed of a conductive material is attached thereto.
介质本体 1可以为任意介电常数大于 1的材料， 例如聚四氟乙烯、 环氧 树脂、 FR4材料等， 但介电常数越高、 损耗角正切越小的材料更有利于电磁 谐振并降低谐振频率， 现有技术中优选陶瓷材料， 例如氧化铝， 也可以是微 波介质陶瓷例如 BaTi409、 Ba2Ti9O20、 MgTi03-CaTi03、 BaO-Ln203-Ti02 系、 Bi203-ZnO-Nb205系等。当然介质本体 1只要是具有较高的介电常数和 较低的损耗（通常介电常数大于 30，损耗角正切小于 0.01 )的材料制成均可。 如图 1所示， 本实施例的介质本体 1为矩形方柱， 且四条棱倒圆角。 当 然谐振子不限于这种形状， 本发明的介质本体 1可以是现有任意一种谐振子 所具有的形状， 例如圆柱形、 方片形、 圆台形、 方形梯台， 或其他任意规则 或不规则形状， 这都不影响到本发明的谐振子的特性， 本文不作限制。 The dielectric body 1 may be any material having a dielectric constant greater than 1, such as polytetrafluoroethylene, epoxy resin, FR4 material, etc., but the higher the dielectric constant and the smaller the loss tangent, the more favorable the electromagnetic resonance and the lower the resonance. The frequency is preferably a ceramic material such as alumina in the prior art, and may also be a microwave dielectric ceramic such as BaTi409, Ba2Ti9O20, MgTi03-CaTi03, BaO-Ln203-Ti02 system, Bi203-ZnO-Nb205 system or the like. Of course, the dielectric body 1 may be made of a material having a high dielectric constant and a low loss (typically having a dielectric constant of more than 30 and a loss tangent of less than 0.01). As shown in FIG. 1, the medium body 1 of the present embodiment is a rectangular square column, and four ribs are rounded. Of course, the resonator is not limited to such a shape, and the dielectric body 1 of the present invention may have any shape of a resonator of any type, such as a cylindrical shape, a square shape, a truncated cone shape, a square ladder, or any other rule or not. The regular shape does not affect the characteristics of the resonator of the present invention, and is not limited herein.
图 2所示的凹孔 2为通孔， 即该凹孔 2从介质本体 1的一个表面穿透到 另一个表面。 本实施例的通孔为圆柱形孔， 且优选该圆柱形孔的中心线位于 介质本体 1的中心轴上， 可以使得当谐振子放在谐振腔中央时腔体内的电磁 场的对称分布。 通孔也可以圆柱形、 方柱形、 圆台形、 方形梯台、 锥形或其 他规则或不规则的形状， 或者是与介质本体 1的外轮廓共形从而使介质本体 1成等厚结构。  The recessed hole 2 shown in Fig. 2 is a through hole, that is, the recessed hole 2 penetrates from one surface of the medium body 1 to the other surface. The through hole of this embodiment is a cylindrical hole, and preferably the center line of the cylindrical hole is located on the central axis of the medium body 1, so that the electromagnetic field of the cavity is symmetrically distributed when the resonator is placed at the center of the cavity. The through holes may also be cylindrical, square cylindrical, truncated, square, tapered or other regular or irregular shapes, or conformal to the outer contour of the dielectric body 1 such that the dielectric body 1 is of equal thickness.
当然， 该凹孔 2不一定为通孔， 也可以是盲孔， 即没有穿透至另一表面 的孔。 例如， 该盲孔可以为与上述通孔的任一种形状相同、 只是高度较短的 形状， 也可以为其他形状如半球形、 四面体形等， 本文不作限制。  Of course, the recessed hole 2 is not necessarily a through hole, and may be a blind hole, that is, a hole that does not penetrate to the other surface. For example, the blind hole may have the same shape as the above-mentioned through hole, but only has a short height, and may have other shapes such as a hemispherical shape, a tetrahedral shape, and the like, which are not limited herein.
在凹孔 2的内壁表面上附着有导电层 3， 导电层 3 由可以导电的材料构 成， 优选金属， 例如银、 铜或金， 或者为含有银、 铜或金中一种或两种或三 种的合金， 也可以是其他金属材料或其他金属合金导电材料也可以是能导电 的非金属， 例如导电石墨、 铟锡氧化物或渗铝氧化锌。  A conductive layer 3 is attached to the inner wall surface of the recess 2, and the conductive layer 3 is made of a conductive material, preferably a metal such as silver, copper or gold, or one or two or three of silver, copper or gold. The alloy may be other metal materials or other metal alloy conductive materials or non-metal conductive materials such as conductive graphite, indium tin oxide or aluminized zinc oxide.
导电层 3可以是如上所述直接附着在凹孔 2内壁上， 也可通过连接媒介 而设置在凹孔 2内部，例如采用粘胶粘接，或者连接杆一端与导电层 3连接， 另一端与凹孔 2内壁固定， 使得导电层 3与凹孔 2内壁之间隔有空气层， 或 者在二者之间添加其他低损耗、 低介电的材料固定二者， 等等。  The conductive layer 3 may be directly attached to the inner wall of the recessed hole 2 as described above, or may be disposed inside the recessed hole 2 by a connecting medium, for example, by adhesive bonding, or one end of the connecting rod may be connected to the conductive layer 3, and the other end may be The inner wall of the recessed hole 2 is fixed such that the conductive layer 3 is separated from the inner wall of the recessed hole 2 by an air layer, or other low-loss, low-dielectric material is added between the two, and the like.
图 3所示的实施例中， 介质本体 1为均勾等厚的圆筒形， 中间的凹孔为 通孔。 导电层 3为具有一定厚度的金属筒， 且底部设有凸缘， 介质本体 1套 在导电层 3外且底面可刚好放在凸缘上。 当然， 金属筒并不一定具有凸缘， 可以仅具有圆筒形结构， 通过粘接或其他方式与谐振腔底部固定。 优选谐振 子的导电层直接与谐振腔底部电连接而接地。  In the embodiment shown in Fig. 3, the medium body 1 is a cylindrical shape having a uniform hook shape, and the concave hole in the middle is a through hole. The conductive layer 3 is a metal cylinder having a certain thickness, and the bottom portion is provided with a flange, and the dielectric body 1 is sleeved outside the conductive layer 3 and the bottom surface can be placed just on the flange. Of course, the metal cylinder does not necessarily have a flange, and may have only a cylindrical structure, and is fixed to the bottom of the cavity by bonding or the like. Preferably, the conductive layer of the resonator is electrically connected directly to the bottom of the cavity to be grounded.
导电层 3所覆盖的范围， 可以为整个凹孔 2内壁表面， 可以为凹孔 2内 壁的部分表面， 例如只覆盖凹孔 2内壁的侧面， 也即与凹孔 2开口端面连接 的内壁部分； 也可只覆盖凹孔 2的底面， 即与凹孔 2开口端面相对的不与该 开口端连接的内壁部分； 又或者， 同时覆盖有侧面的部分区域以及底面的部 分区域。  The conductive layer 3 may cover the inner wall surface of the entire recessed hole 2, and may be a partial surface of the inner wall of the recessed hole 2, for example, a side surface covering only the inner wall of the recessed hole 2, that is, an inner wall portion connected to the open end surface of the recessed hole 2; It is also possible to cover only the bottom surface of the recessed hole 2, that is, the inner wall portion which is not connected to the open end of the recessed hole 2, or the partial portion of the side surface and the partial portion of the bottom surface.
下面将结合谐振子的具体应用环境——谐振腔来说明该谐振子的优势以 及其与现有介质陶瓷谐振子的区别。 谐振腔如图 4、 图 5所示， 包括腔体 5、 谐振子和调谐杆 4。 其中， 腔体 5 的开口端上装有腔盖， 腔体和腔盖围合成一个封闭空间， 上述谐振子即位 于所述封闭空间内， 其底部可以通过一个低损耗材料 （如氧化铝等） 制成的 支承座将谐振子支撑起来。 腔体或腔盖上装有调谐杆 4， 调谐杆 4末端伸入 封闭空间内并至少部分地伸入谐振子的凹孔 2内。 In the following, the specific application environment of the resonator, the resonant cavity, will be described to illustrate the advantages of the resonator and its difference from the existing dielectric ceramic resonator. As shown in FIG. 4 and FIG. 5, the resonant cavity includes a cavity 5, a resonator, and a tuning rod 4. Wherein, the open end of the cavity 5 is provided with a cavity cover, and the cavity and the cavity cover are combined to form a closed space. The resonator is located in the closed space, and the bottom portion thereof can be made of a low loss material (such as alumina). The support seat supports the resonator. A tuning rod 4 is mounted on the cavity or chamber cover, and the end of the tuning rod 4 projects into the enclosed space and at least partially projects into the recess 2 of the resonator.
调谐杆 4通常为金属螺杆， 通过螺母装在腔盖上， 且伸入腔内的长度可 调， 从而在小范围内调节谐振腔的谐振频率。 调谐杆 4也可以由陶瓷材料制 成， 或者是在一低损耗材料制成的杆外表面包裹金属或陶瓷或其他高介电常 数材料。 调谐杆 4也可以为非金属材料制成， 只要其介电常数大于 1即可， 当然优选介电常数更高的材料。 本发明不对调谐杆 4的材料和形状做任何限 定， 只要其伸入腔体 5内能微扰腔内电磁场分布从而影响谐振频率即可。 调 谐杆 4末端可以与凹孔 2内壁或导电层 3直接接触。  The tuning rod 4 is typically a metal screw that is mounted on the chamber cover by a nut and has a length that extends into the chamber to adjust the resonant frequency of the cavity over a small range. The tuning rod 4 can also be made of a ceramic material or a metal or ceramic or other high dielectric constant material coated on the outer surface of a rod made of a low loss material. The tuning rod 4 may also be made of a non-metallic material as long as its dielectric constant is greater than 1, and a material having a higher dielectric constant is of course preferable. The present invention does not limit the material and shape of the tuning rod 4 as long as it protrudes into the cavity 5 to perturb the electromagnetic field distribution in the cavity to affect the resonant frequency. The end of the tuning rod 4 can be in direct contact with the inner wall of the recess 2 or the conductive layer 3.
当凹孔 2为通孔时， 介质本体 1的与腔体 5接触的底面可以设置导体连 接层， 所述导体连接层为与上述导电层 3相同或者不同的导电材料制成， 且 与通孔内壁上的导电层 3连接起来。 此时该导体连接层可以通过热压或焊接 或其他公知的连接技术与腔体 5固连为一体。  When the recessed hole 2 is a through hole, the bottom surface of the dielectric body 1 that is in contact with the cavity 5 may be provided with a conductor connection layer, and the conductor connection layer is made of the same or different conductive material as the conductive layer 3, and the through hole The conductive layers 3 on the inner wall are joined. At this time, the conductor connection layer may be integrally attached to the cavity 5 by heat pressing or soldering or other known connection technique.
为了增强降频效果， 介质本体 1上可以设有两个或多于两个的凹孔 2， 至少其中一个凹孔 2上对应有一个调谐杆 4， 当然为了增大微扰量， 可以在 每个凹孔 2相对的位置均设置一个调谐杆 4。  In order to enhance the frequency reduction effect, the medium body 1 may be provided with two or more recessed holes 2, and at least one of the recessed holes 2 corresponding to a tuning rod 4, of course, in order to increase the amount of perturbation, A tuning rod 4 is disposed at a position opposite to each of the recessed holes 2.
下面将通过具体实验数据来说明本发明的谐振腔的优势。 以一个具有纯 陶瓷介质谐振子的单腔谐振腔为对比例， 该谐振腔腔体为方柱形， 该陶瓷介 质谐振子采用圆柱形微波介质陶瓷，尺寸为外径 24mm、内径 8mm、高 19mm, 内径对应为通孔， 实验测得具有该介质谐振子的谐振腔的谐振频率为 1.642GHz, 该谐振腔的平均功率为 275 W。  The advantages of the resonant cavity of the present invention will be explained below by specific experimental data. Taking a single-cavity resonator with a pure ceramic dielectric resonator as a square cylinder, the cavity of the cavity is a square cylinder. The ceramic dielectric resonator is a cylindrical microwave dielectric ceramic with a diameter of 24 mm, an inner diameter of 8 mm, and a height of 19 mm. The inner diameter corresponds to a through hole. The resonant frequency of the resonant cavity having the dielectric resonator is measured to be 1.642 GHz, and the average power of the resonant cavity is 275 W.
采用相同的腔体和介质谐振子 （上述纯陶瓷介质谐振子作为本例中谐振 子的介质本体）， 并在该谐振子的通孔（即本例中的凹孔）镀上银（即本例中 的导电层）， 实验测得具有该谐振子的谐振腔的谐振频率降至 0.875GHz, 平 均功率为 335W。  The same cavity and dielectric resonator (the above-mentioned pure ceramic dielectric resonator is used as the dielectric body of the resonator in this example), and silver is plated in the through hole of the resonator (ie, the recess in this example) In the conductive layer in the example, the resonance frequency of the resonator having the resonator was experimentally measured to fall to 0.875 GHz, and the average power was 335 W.
由此可见， 采用本发明的谐振子， 相对于单纯的介质谐振子， 可将谐振 频率降低约 800MHz, 基本上为原来谐振频率的一半， 相应意味着， 当制备 相同谐振频率的谐振腔时， 腔体体积将大幅度减小， 而对功率的影响不大。  It can be seen that with the resonator of the present invention, the resonant frequency can be reduced by about 800 MHz with respect to a simple dielectric resonator, which is substantially half of the original resonant frequency, which means that when a resonant cavity of the same resonant frequency is prepared, The volume of the cavity will be greatly reduced, but has little effect on power.
而采用相同的腔体， 将介质谐振子更换为形状、体积相同的金属谐振子， 即金属谐振子为外径 24mm、 内径 8mm、高 19mm的圆筒形，且材质为纯铜。 实验测得具有该金属谐振子的谐振腔的谐振频率为 1.569GHz, 平均功率为 54W。 The same cavity is used to replace the dielectric resonator with a metal resonator of the same shape and volume, that is, the metal resonator is a cylindrical shape having an outer diameter of 24 mm, an inner diameter of 8 mm, and a height of 19 mm, and the material is pure copper. It is experimentally measured that the resonant frequency of the resonant cavity having the metal resonator is 1.569 GHz, and the average power is 54W.
由此可见， 采用本发明的谐振子， 相对于单纯的金属谐振子， 仍能提供 基本相近的谐振频率， 而平均功率则大大提高了。  Thus, it can be seen that the resonator of the present invention can provide a substantially similar resonant frequency with respect to a simple metal resonator, and the average power is greatly improved.
综上所述， 可知采用本发明的谐振子， 即具有介质谐振子的耐高功率的 优点， 同时兼有金属谐振子的谐振频率低、 体积小的优点， 可以大大拓宽现 有技术的谐振腔、 滤波器件的应用范围。  In summary, it can be seen that the resonator of the present invention has the advantages of high dielectric resistance of the dielectric resonator, and has the advantages of low resonance frequency and small volume of the metal resonator, and can greatly expand the cavity of the prior art. , the application range of the filter components.
基于上述单腔的谐振腔的特点， 本发明还涉及一种滤波器件， 可以为滤 波器、 双工器或者其他具有滤波功能的器件， 其包括至少一个谐振腔， 而其 中至少一个谐振腔为上述谐振腔。  Based on the characteristics of the single-cavity resonant cavity described above, the present invention also relates to a filter device, which may be a filter, a duplexer or other device having a filtering function, including at least one resonant cavity, wherein at least one resonant cavity is the above Resonant cavity.
以图 6、 图 7所示的多腔滤波器为例。 图 6所示的滤波器为具有六个谐 振腔的滤波器。 腔体 5两端分别装有输入端 8和输出端 9。  Take the multi-cavity filter shown in Figure 6 and Figure 7 as an example. The filter shown in Figure 6 is a filter with six resonant cavities. The input end 8 and the output end 9 are respectively arranged at two ends of the cavity 5.
为了增强耦合， 腔和腔之间为开窗耦合且开窗到底； 同时， 多个谐振子 如图 6所示依次通过桥接部分 7连接成一体。 所述桥接部分 7可以是与介质 本体 1相同的材料制成， 也可以是不同材料制成。 进一步地， 每个开窗位置 还设置有耦合杆 6， 通过耦合杆 6伸入腔内的长度也可以调节耦合强弱。 当 然， 传统滤波器的腔体之间的电耦合或磁耦合方式都可应用在本发明中， 例 如圆盘耦合、 金属杆耦合等。  In order to enhance the coupling, the cavity and the cavity are coupled by a window and the window is opened to the bottom; at the same time, the plurality of resonators are connected in series through the bridge portion 7 as shown in FIG. The bridging portion 7 may be made of the same material as the medium body 1, or may be made of a different material. Further, each window opening position is also provided with a coupling rod 6, and the coupling strength can also be adjusted by the length of the coupling rod 6 extending into the cavity. Of course, electrical or magnetic coupling between the cavities of conventional filters can be applied to the present invention, such as disk coupling, metal rod coupling, and the like.
由图 6可知， 每个谐振子都如上文所述， 具有凹孔 2和附着在凹孔 2内 壁上的导电层 3， 且每个凹孔 2都对应设有一个调谐杆 4插入凹孔 2内。  As can be seen from FIG. 6, each of the resonators has a recessed hole 2 and a conductive layer 3 attached to the inner wall of the recessed hole 2 as described above, and each recessed hole 2 is provided with a tuning rod 4 correspondingly inserted into the recessed hole 2 Inside.
进而， 本发明还保护一种具有上述滤波器件的电磁波设备， 该电磁波设 备可以是任何一种需要用到滤波器件的设备， 例如飞机、 雷达、 基站、 卫星 等。这些电磁波设备会接收和发送信号，并在接收之后或发送之前进行滤波， 以使所接收或发送的信号满足需求， 因此电磁波设备至少还包括与滤波器件 的输入端连接的信号发射模块、 与滤波器件的输出端连接的信号接收模块。  Further, the present invention also protects an electromagnetic wave device having the above filter member, which may be any device that requires a filter device, such as an airplane, a radar, a base station, a satellite, or the like. These electromagnetic wave devices receive and transmit signals and filter them after reception or before transmission so that the received or transmitted signals satisfy the requirements. Therefore, the electromagnetic wave device further includes at least a signal transmitting module connected to the input end of the filter device, and filtering. A signal receiving module connected to the output of the device.
例如， 如图 8所示， 电磁波设备为基站， 基站包括作为滤波器件的双工 器， 双工器包括发信带通滤波器和收信带通滤波器。 发信带通滤波器的输入 端连接发信机， 输出端连接基站天线； 收信带通滤波器的输入端连接基站天 线， 输出端连接收信机。  For example, as shown in Fig. 8, the electromagnetic wave device is a base station, and the base station includes a duplexer as a filter member, and the duplexer includes a transmit band pass filter and a receive band pass filter. The input end of the transmit bandpass filter is connected to the transmitter, and the output is connected to the base station antenna; the input end of the receive bandpass filter is connected to the base station antenna, and the output is connected to the receiver.
则对于发信带通滤波器， 其信号发射模块为发信机， 信号接收模块为基 站天线。 而对于收信带通滤波器， 其信号发射模块为基站天线， 信号接收模 块为收信机。  For the transmit bandpass filter, the signal transmitting module is a transmitter, and the signal receiving module is a base station antenna. For the receive bandpass filter, the signal transmitting module is a base station antenna, and the signal receiving module is a receiver.
本发明由于采用具有导电层 3的谐振子， 有利于降低具有该谐振子的谐 振腔的谐振频率， 从而在实现相同谐振频率时可大大缩小谐振腔的体积； 介 质本体的存在又使得整个谐振子能够耐受高功率。 因此具有该谐振腔的滤波 器件和电磁波设备的体积也会随之明显减小， 且耐高功率。 The invention adopts a resonator having a conductive layer 3, which is advantageous for reducing the resonant frequency of the resonant cavity having the harmonic oscillator, thereby greatly reducing the volume of the resonant cavity when achieving the same resonant frequency; The presence of the mass body in turn allows the entire resonator to withstand high power. Therefore, the volume of the filter member and the electromagnetic wave device having the resonant cavity is also significantly reduced, and high power is withstand.
本发明涉及一种谐振子以及具有该谐振子的谐振腔、 滤波器件和电磁波 设备， 该谐振子使得谐振腔具有非常低的谐振频率， 因而与相同谐振频率的 传统谐振腔相比体积要小得多， 可以有效减小由谐振腔构成的滤波器件以及 具有该滤波器件的电磁波设备的体积和重量。  The present invention relates to a resonator, a resonator having the resonator, a filter member, and an electromagnetic wave device, the resonator having a very low resonance frequency, and thus having a smaller volume than a conventional cavity of the same resonance frequency More, the filter member composed of the resonant cavity and the volume and weight of the electromagnetic wave device having the filter member can be effectively reduced.
其中一实施例的谐振子如图 9、 图 10所示， 包括介质本体 1， 介质本体 1外表面上开设有向介质本体 1 内部凹陷的凹孔 2， 介质本体外侧壁设置有 导电材料构成的第一导电层 4， 凹孔 2内壁的全部表面或部分表面也设置有 导电材料构成的第二导电层 3。  As shown in FIG. 9 and FIG. 10, the resonator of one embodiment includes a dielectric body 1. The outer surface of the dielectric body 1 is provided with a recessed hole 2 recessed toward the interior of the dielectric body 1. The outer wall of the medium body is provided with a conductive material. The first conductive layer 4, the entire surface or part of the surface of the inner wall of the recess 2 is also provided with a second conductive layer 3 made of a conductive material.
介质本体 1可以为任意介电常数大于 1的材料， 例如聚四氟乙烯、 环氧 树脂、 F4B、 FR4 材料等， 但介电常数越高、 损耗角正切越小的材料更有利 于电磁谐振并降低谐振频率， 现有技术中优选陶瓷材料， 例如氧化铝， 也可 以是微波介质陶瓷例如 BaTi409、 Ba2Ti9O20、 MgTi03-CaTi03、 BaO-Ln203-Ti02系、 Bi203-ZnO-Nb205系等。 当然只要是具有较高的介电 常数和较低的损耗（通常介电常数大于 30， 损耗角正切小于 0.01 ) 的材料均 可。  The dielectric body 1 may be any material having a dielectric constant greater than 1, such as polytetrafluoroethylene, epoxy resin, F4B, FR4 material, etc., but the higher the dielectric constant and the smaller the loss tangent, the more favorable the electromagnetic resonance The resonance frequency is lowered. In the prior art, a ceramic material such as alumina or a microwave dielectric ceramic such as BaTi409, Ba2Ti9O20, MgTi03-CaTi03, BaO-Ln203-TiO2, Bi203-ZnO-Nb205 or the like is preferable. Of course, any material having a high dielectric constant and a low loss (typically having a dielectric constant greater than 30 and a loss tangent less than 0.01) is acceptable.
如图 9所示， 本实施例的介质本体 1为矩形方柱， 且四条棱倒圆角。 当 然谐振子不限于这种形状， 本发明的介质本体 1可以是现有任意一种谐振子 所具有的形状， 例如圆柱形、 方片形、 圆台形、 方形梯台， 或其他任意规则 或不规则形状， 这都不影响到本发明的谐振子的特性， 本文不作限制。  As shown in Fig. 9, the medium body 1 of the present embodiment is a rectangular square column, and the four edges are rounded. Of course, the resonator is not limited to such a shape, and the dielectric body 1 of the present invention may have any shape of a resonator of any type, such as a cylindrical shape, a square shape, a truncated cone shape, a square ladder, or any other rule or not. The regular shape does not affect the characteristics of the resonator of the present invention, and is not limited herein.
图 10所示的凹孔 2为通孔，即该凹孔 2从介质本体 1的一个表面穿透到 另一个表面。 本实施例的通孔为圆柱形孔， 且优选该圆柱形孔的中心线位于 介质本体 1的中心轴上， 可以使得当谐振子放在谐振腔中央时腔体内的电磁 场的对称分布。 通孔也可以圆柱形、 方柱形、 圆台形、 方形梯台、 锥形或其 他规则或不规则的形状， 或者是与介质本体 1的外轮廓共形从而使介质本体 1成等厚结构。  The recessed hole 2 shown in Fig. 10 is a through hole, that is, the recessed hole 2 penetrates from one surface of the medium body 1 to the other surface. The through hole of this embodiment is a cylindrical hole, and preferably the center line of the cylindrical hole is located on the central axis of the medium body 1, so that the electromagnetic field of the cavity is symmetrically distributed when the resonator is placed at the center of the cavity. The through holes may also be cylindrical, square cylindrical, truncated, square, tapered or other regular or irregular shapes, or conformal to the outer contour of the dielectric body 1 such that the dielectric body 1 is of equal thickness.
当然， 该凹孔 2不一定为通孔， 也可以是盲孔， 即没有穿透至另一表面 的孔。 例如， 该盲孔可以为与上述通孔的任一种形状相同、 只是高度较短的 形状， 也可以为其他形状如半球形、 四面体形等， 本文不作限制。  Of course, the recessed hole 2 is not necessarily a through hole, and may be a blind hole, that is, a hole that does not penetrate to the other surface. For example, the blind hole may have the same shape as the above-mentioned through hole, but only has a short height, and may have other shapes such as a hemispherical shape, a tetrahedral shape, and the like, which are not limited herein.
第一导电层 4、 第二导电层 3 的导电的材料优选为金属， 例如银、 铜或 金， 或者为含有银、 铜或金中一种或两种或三种的合金， 也可以是其他金属 材料或其他金属合金。 导电材料也可以是能导电的非金属， 例如导电石墨、 铟锡氧化物或渗铝氧化锌。 第一导电层 4、 第二导电层 3可以是如上所述直接附着在介质本体外侧 壁上、 凹孔内壁上， 也可通过连接媒介而分别设置在介质本体外侧壁上、 凹 孔 2内部， 例如采用粘胶粘接或者连接杆等其他方式。 The conductive material of the first conductive layer 4 and the second conductive layer 3 is preferably a metal such as silver, copper or gold, or an alloy containing one or two or three of silver, copper or gold, and may be other Metal material or other metal alloy. The electrically conductive material may also be an electrically conductive non-metal such as conductive graphite, indium tin oxide or aluminized zinc oxide. The first conductive layer 4 and the second conductive layer 3 may be directly attached to the inner wall of the medium body and the inner wall of the concave hole as described above, or may be respectively disposed on the outer wall of the medium body and inside the concave hole 2 through a connecting medium. For example, other methods such as adhesive bonding or connecting rods are used.
当然第一导电层 4和第二导电层 3可以采用相同的导电材料， 也可以采 用不同的导电材料。  Of course, the first conductive layer 4 and the second conductive layer 3 may be made of the same conductive material or different conductive materials.
第一导电层 4、 第二导电层 3可以局部或整体地覆盖介质本体 1 的外侧 壁表面、 内侧壁表面。  The first conductive layer 4 and the second conductive layer 3 may partially or integrally cover the outer wall surface and the inner side wall surface of the dielectric body 1.
同时， 第一导电层 4可以是一片整体的导电箔片， 也可以是多个具有一 定几何形状的导电箔片结构， 例如为多个依次间隔的长条形、 方格形、 圆片 形、 椭圆形等， 或者其他复杂形状， 例如图 11所示的雪花型， 也可以是"工" 字形， "十"字形。 这些箔片结构可以规律的排布， 也可随机排布。 第二导电 层 3也为如此。 二者的箔片结构可以有规律地设置， 例如平行、 对称等， 也 可随机设置。  At the same time, the first conductive layer 4 may be a whole piece of conductive foil, or may be a plurality of conductive foil structures having a certain geometric shape, for example, a plurality of sequentially spaced strips, squares, and wafers. Elliptical, etc., or other complex shapes, such as the snowflake type shown in Figure 11, can also be a "work" font, a "ten" shape. These foil structures can be arranged regularly or randomly. This is also the case for the second conductive layer 3. The foil structure of the two can be regularly set, such as parallel, symmetrical, etc., or can be randomly set.
图 10所示的实施例中， 介质本体 1为均勾等厚的圆筒形， 中间的凹孔为 通孔。 第二导电层 3为具有一定厚度的金属筒， 且底部设有凸缘， 介质本体 1套在第二导电层 3外且底面可刚好放在凸缘上。 当然， 金属筒并不一定具 有凸缘， 可以仅具有圆筒形结构， 通过粘接或其他方式与谐振腔底部固定。  In the embodiment shown in Fig. 10, the medium body 1 is a cylindrical shape having a uniform hook shape, and the concave hole in the middle is a through hole. The second conductive layer 3 is a metal cylinder having a certain thickness, and the bottom portion is provided with a flange, and the dielectric body 1 is sleeved outside the second conductive layer 3 and the bottom surface can be placed just on the flange. Of course, the metal cylinder does not necessarily have a flange, and may have only a cylindrical structure and be fixed to the bottom of the cavity by bonding or the like.
第二导电层 3所覆盖的范围， 可以为整个凹孔 2内壁表面， 可以为凹孔 2内壁的部分表面， 例如只覆盖凹孔 2内壁的侧面， 也即与凹孔 2开口端面 连接的内壁部分； 也可只覆盖凹孔 2的底面， 即与凹孔 2开口端面相对的不 与该开口端连接的内壁部分； 又或者， 同时覆盖有侧面的部分区域以及底面 的部分区域。  The second conductive layer 3 may cover the inner wall surface of the entire recessed hole 2, and may be a partial surface of the inner wall of the recessed hole 2, for example, a side surface covering only the inner wall of the recessed hole 2, that is, an inner wall connected to the open end surface of the recessed hole 2. It is also possible to cover only the bottom surface of the recessed hole 2, that is, the inner wall portion which is not connected to the open end of the recessed hole 2, or the partial portion of the side surface and the partial portion of the bottom surface.
第一导电层 4所覆盖的范围可以是谐振子外侧壁的整个表面， 也可以是 谐振子外侧壁的部分表面。  The first conductive layer 4 may cover the entire surface of the outer side wall of the resonator or may be a partial surface of the outer side wall of the resonator.
下面将结合谐振子的具体应用环境——谐振腔来说明该谐振子的优势以 及其与现有介质陶瓷谐振子的区别。  In the following, the specific application environment of the resonator, the resonant cavity, will be described to illustrate the advantages of the resonator and its difference from the existing dielectric ceramic resonator.
谐振腔如图 12、 图 13所示， 包括腔体 6、 谐振子和调谐杆 5。 其中， 腔 体 6包括腔体和装在腔体开口端的腔盖， 腔体和腔盖围合成一个封闭空间， 上述谐振子即位于所述封闭空间内， 其底部可以通过一个低损耗材料 （如氧 化铝等） 制成的支承座将谐振子支撑起来。 腔体或腔盖上装有调谐杆 5， 调 谐杆 5末端伸入封闭空间内并至少部分地伸入谐振子的凹孔 2内。  The cavity is shown in Fig. 12 and Fig. 13, and includes a cavity 6, a resonator, and a tuning rod 5. The cavity 6 includes a cavity and a cavity cover mounted at the open end of the cavity. The cavity and the cavity cover form a closed space. The resonator is located in the closed space, and the bottom portion thereof can pass through a low loss material (such as oxidation). Aluminum, etc.) The support is made to support the resonator. A tuning rod 5 is mounted on the cavity or chamber cover, and the end of the tuning rod 5 projects into the enclosed space and at least partially projects into the recess 2 of the resonator.
调谐杆 5通常为金属螺杆， 通过螺母装在腔盖上， 且伸入腔内的长度可 调， 从而在小范围内调节谐振腔的谐振频率。 调谐杆 5也可以有陶瓷材料制 成， 或者是在一低损耗材料制成的杆外表面包裹金属或陶瓷或其他高介电常 数材料。 调谐杆 4也可以为非金属材料制成， 只要其介电常数大于 1即可， 当然优选介电常数更高的材料。 本发明不对调谐杆 4的材料和形状做任何限 定， 只要其伸入腔体 6内能微扰腔内电磁场分布从而影响谐振频率即可。 调 谐杆 5末端可以与凹孔 2内壁或第二导电层 3直接接触。 The tuning rod 5 is typically a metal screw that is mounted on the chamber cover by a nut and has an adjustable length that extends into the chamber to adjust the resonant frequency of the resonant cavity over a small range. The tuning rod 5 can also be made of ceramic material Or, a metal or ceramic or other high dielectric constant material is wrapped on the outer surface of the rod made of a low loss material. The tuning rod 4 may also be made of a non-metallic material as long as its dielectric constant is greater than 1, and a material having a higher dielectric constant is of course preferable. The present invention does not limit the material and shape of the tuning rod 4 as long as it protrudes into the cavity 6 to perturb the electromagnetic field distribution in the cavity to affect the resonant frequency. The end of the tuning rod 5 may be in direct contact with the inner wall of the recess 2 or the second conductive layer 3.
另外， 当凹孔 2为通孔时， 介质本体 1的与腔体 6接触的底面可以设置 导体连接层， 所述导体连接层为与上述第一导电层 4或第二导电层 3相同或 者不同的导体材料制成， 且与通孔内壁上的第二导电层 3连接起来。 此时该 导体连接层可以通过热压或焊接或其他公知的连接技术与腔体 6 固连为一 体。  In addition, when the recessed hole 2 is a through hole, the bottom surface of the dielectric body 1 that is in contact with the cavity 6 may be provided with a conductor connection layer, which is the same as or different from the first conductive layer 4 or the second conductive layer 3 described above. The conductor material is made of a material and is connected to the second conductive layer 3 on the inner wall of the through hole. At this time, the conductor connection layer may be integrally bonded to the cavity 6 by heat pressing or soldering or other known connection technique.
介质本体 1 上可以设有两个或多于两个的凹孔 2， 至少其中一个凹孔 2 上对应有一个调谐杆 5。  The medium body 1 may be provided with two or more than two recessed holes 2, and at least one of the recessed holes 2 corresponds to a tuning rod 5.
下面将通过具体实验数据来说明本发明的谐振腔的优势。 以一个具有纯 陶瓷介质谐振子的单腔谐振腔为对比例， 该谐振腔为圆柱形， 该陶瓷介质谐 振子采用微波介质陶瓷， 尺寸为外径 24mm、 内径 8mm、 高 16mm、 内径对 应通孔的圆柱体， 实验测得具有该谐振子的谐振腔的谐振频率为 1.673GHz。 采用相同的腔体和谐振子 （上述纯陶瓷介质谐振子作为本例中谐振子的介质 本体）， 并在该谐振子的外壁镀上银 （即本例中的第一导电层）， 同时通孔也 (即本例中的凹孔）镀上银（即本例中的第二导电层）， 实验测得具有该谐振 子的谐振腔的谐振频率降至 0.670GHz。 由此可见， 采用本发明的谐振子， 可 将谐振频率降低约 lGHz， 不到原来谐振频率的一半， 相应意味着， 当制备 相同谐振频率的谐振腔时， 腔体体积将大幅度减小。  The advantages of the resonant cavity of the present invention will be explained below by specific experimental data. Taking a single cavity resonator with a pure ceramic dielectric resonator as a reference, the cavity is cylindrical. The ceramic dielectric resonator is made of microwave dielectric ceramic. The size is 24mm outer diameter, 8mm inner diameter, 16mm high, and inner diameter corresponding to the through hole. The cylinder was experimentally measured to have a resonant frequency of 1.673 GHz for the resonator having the resonator. The same cavity and resonator (the above-mentioned pure ceramic dielectric resonator is used as the dielectric body of the resonator in this example), and the outer wall of the resonator is plated with silver (ie, the first conductive layer in this example) while the through hole Also (i.e., the recessed hole in this example) was plated with silver (i.e., the second conductive layer in this example), and it was experimentally measured that the resonant frequency of the resonator having the resonator was lowered to 0.670 GHz. It can be seen that with the resonator of the present invention, the resonant frequency can be reduced by about 1 GHz, which is less than half of the original resonant frequency, which means that when a resonant cavity of the same resonant frequency is prepared, the volume of the cavity is greatly reduced.
基于上述单腔的谐振腔的特点， 本发明还涉及一种滤波器件， 可以为带 通滤波器、 带阻滤波器、 高通滤波器、 低通滤波器或多频段滤波器、 双工器 或者其他具有滤波功能的器件， 其包括至少一个谐振腔， 而其中至少一个谐 振腔为上述谐振腔。  Based on the characteristics of the single cavity resonator described above, the present invention also relates to a filter device, which may be a band pass filter, a band stop filter, a high pass filter, a low pass filter or a multi-band filter, a duplexer or the like. A device having a filtering function, comprising at least one resonant cavity, wherein at least one of the resonant cavities is the resonant cavity.
以图 14、 图 15所示的多腔滤波器为例， 图 14所示的滤波器为具有六个 谐振腔的滤波器。 腔体 6两端分别装有输入端 8和输出端 9。  Taking the multi-cavity filter shown in Figs. 14 and 15 as an example, the filter shown in Fig. 14 is a filter having six resonators. The input end 8 and the output end 9 are respectively arranged at two ends of the cavity 6.
为了增强耦合， 腔和腔之间完全互通， 没有设置隔挡； 同时， 多个谐振 子如图 14所示依次通过桥接部分 7连接成一体。 所述桥接部分 7可以是与 介质本体 1相同的材料制成， 也可以是不同材料制成， 直接桥接的方式能够 增强耦合。 进一步地， 每个开窗位置还设置有耦合杆 10， 通过耦合杆 10伸 入腔内的长度也可以调节耦合强弱。 当然， 传统滤波器的腔体之间的电耦合 或磁耦合方式都可应用在本发明中， 例如圆盘耦合、 金属杆耦合等。 由图 14可知， 每个谐振子都如上文所述， 谐振子的外壁附着有第一导电 层 4， 同时谐振子还具有凹孔 2和附着在凹孔 2内壁上的第二导电层 3， 且 每个凹孔 2都对应设有一个调谐杆 5插入凹孔 2内。 In order to enhance the coupling, the cavity and the cavity are completely intercommunicated, and no barrier is provided; at the same time, the plurality of resonators are connected in series through the bridge portion 7 as shown in FIG. The bridging portion 7 may be made of the same material as the dielectric body 1, or may be made of a different material, and the direct bridging manner can enhance the coupling. Further, each window opening position is also provided with a coupling rod 10, and the coupling strength can also be adjusted by the length of the coupling rod 10 extending into the cavity. Of course, electrical or magnetic coupling between the cavities of conventional filters can be applied to the present invention, such as disk coupling, metal rod coupling, and the like. As can be seen from FIG. 14, each resonator is as described above, the outer wall of the resonator is attached with the first conductive layer 4, and the resonator also has a recess 2 and a second conductive layer 3 attached to the inner wall of the recess 2. And each of the recessed holes 2 is correspondingly provided with a tuning rod 5 inserted into the recessed hole 2.
进而， 本发明还保护一种具有上述滤波器件的电磁波设备， 该电磁波设 备可以是任何一种需要用到滤波器件的设备， 例如飞机、 雷达、 基站、 卫星 等。这些电磁波设备会接收和发送信号，并在接收之后或发送之前进行滤波， 以使所接收或发送的信号满足需求， 因此电磁波设备至少还包括与滤波器件 的输入端连接的信号发射模块、 与滤波器件的输出端连接的信号接收模块。  Further, the present invention also protects an electromagnetic wave device having the above filter member, which may be any device that requires a filter device, such as an airplane, a radar, a base station, a satellite, or the like. These electromagnetic wave devices receive and transmit signals and filter them after reception or before transmission so that the received or transmitted signals satisfy the requirements. Therefore, the electromagnetic wave device further includes at least a signal transmitting module connected to the input end of the filter device, and filtering. A signal receiving module connected to the output of the device.
例如， 如图 16所示， 电磁波设备为基站， 基站包括作为滤波器件的双工 器， 双工器包括发信带通滤波器和收信带通滤波器。 发信带通滤波器的输入 端连接发信机， 输出端连接基站天线； 收信带通滤波器的输入端连接基站天 线， 输出端连接收信机。  For example, as shown in Fig. 16, the electromagnetic wave device is a base station, and the base station includes a duplexer as a filter member, and the duplexer includes a transmit band pass filter and a receive band pass filter. The input end of the transmit bandpass filter is connected to the transmitter, and the output is connected to the base station antenna; the input end of the receive bandpass filter is connected to the base station antenna, and the output is connected to the receiver.
则对于发信带通滤波器， 其信号发射模块为发信机， 信号接收模块为基 站天线。 而对于收信带通滤波器， 其信号发射模块为基站天线， 信号接收模 块为收信机。  For the transmit bandpass filter, the signal transmitting module is a transmitter, and the signal receiving module is a base station antenna. For the receive bandpass filter, the signal transmitting module is a base station antenna, and the signal receiving module is a receiver.
本发明由于采用外壁具有导电层的谐振子， 有利于降低具有该谐振子的 谐振腔的谐振频率并耐受高功率， 从而大大缩小谐振腔的体积， 具有该谐振 腔的滤波器件和电磁波设备的体积也会随之明显减小。  The invention adopts a resonator having a conductive layer on the outer wall, which is advantageous for reducing the resonance frequency of the resonator having the resonator and withstanding high power, thereby greatly reducing the volume of the cavity, and the filter device and the electromagnetic wave device having the cavity The volume will also be significantly reduced.
本发明涉及一种谐振子以及具有该谐振子的谐振腔、 滤波器件和电磁波 设备， 该谐振子使得谐振腔具有非常低的谐振频率， 因而与相同谐振频率的 传统谐振腔相比体积要小得多， 可以有效减小由谐振腔构成的滤波器件以及 具有该滤波器件的电磁波设备的体积和重量。  The present invention relates to a resonator, a resonator having the resonator, a filter member, and an electromagnetic wave device, the resonator having a very low resonance frequency, and thus having a smaller volume than a conventional cavity of the same resonance frequency More, the filter member composed of the resonant cavity and the volume and weight of the electromagnetic wave device having the filter member can be effectively reduced.
其中一实施例的谐振子如图 17、 图 18所示， 包括两个介质层 3， 两介质 层 1均为筒状且内外嵌套， 介质层 3为筒状， 是指中间有孔 2的结构， 该孔 2可以是通孔也可以是盲孔， 本文不作限制。  As shown in FIG. 17 and FIG. 18, the resonator of one embodiment includes two dielectric layers 3, both of which are cylindrical and nested inside and outside, and the dielectric layer 3 is cylindrical, which means that there is a hole 2 in the middle. The structure of the hole 2 may be a through hole or a blind hole, which is not limited herein.
两介质层 3之间设有导电层 1。 介质层 3可以为任意介电常数大于 1 的 材料， 例如聚四氟乙烯、 环氧树脂、 F4B、 FR4 材料等， 但介电常数越高、 损耗角正切越小的材料更有利于电磁谐振并降低谐振频率， 现有技术中优选 陶瓷材料， 例如氧化铝， 也可以是微波介质陶瓷例如 BaTi409、 Ba2Ti9O20、 MgTi03-CaTi03、 BaO-Ln203-Ti02系、 Bi203-ZnO-Nb205系等。 当然只要 是具有较高的介电常数和较低的损耗（通常介电常数大于 30， 损耗角正切小 于 0.01 ) 的材料均可。  A conductive layer 1 is disposed between the two dielectric layers 3. The dielectric layer 3 may be any material having a dielectric constant greater than 1, such as polytetrafluoroethylene, epoxy resin, F4B, FR4 material, etc., but the higher the dielectric constant and the smaller the loss tangent, the more favorable the electromagnetic resonance is. The resonance frequency is lowered. In the prior art, a ceramic material such as alumina or a microwave dielectric ceramic such as BaTi409, Ba2Ti9O20, MgTi03-CaTi03, BaO-Ln203-TiO2, Bi203-ZnO-Nb205 or the like is preferable. Of course, as long as it has a high dielectric constant and a low loss (usually a dielectric constant greater than 30, the loss tangent is less than 0.01).
如图 17所示， 本实施例的介质层 3为矩形方柱， 且四条棱倒圆角。 当然 谐振子不限于这种形状， 本发明的介质层 3可以是现有任意一种谐振子所具 有的形状， 例如圆柱形、 方片形、 圆台形、 方形梯台， 或其他任意规则或不 规则形状， 这都不影响到本发明的谐振子的特性， 本文不作限制。 As shown in FIG. 17, the dielectric layer 3 of this embodiment is a rectangular square pillar, and the four ribs are rounded. of course The resonator is not limited to this shape, and the dielectric layer 3 of the present invention may have any shape of a resonator of any type, such as a cylindrical shape, a square shape, a truncated cone shape, a square ladder, or any other regular or irregular shape. The shape, which does not affect the characteristics of the resonator of the present invention, is not limited herein.
导电层 1 的导电的材料优选为金属， 例如银、 铜或金， 或者为含有银、 铜或金中一种或两种或三种的合金。  The electrically conductive material of the electrically conductive layer 1 is preferably a metal such as silver, copper or gold, or an alloy containing one or two or three of silver, copper or gold.
导电层 1也可以是其他金属材料或其他金属合金。 导电材料也可以是能 导电的非金属， 例如导电石墨、 铟锡氧化物或渗铝氧化锌。  The conductive layer 1 may also be other metal materials or other metal alloys. The electrically conductive material may also be a non-metallic material that is electrically conductive, such as conductive graphite, indium tin oxide or aluminized zinc oxide.
导电层 1也可以为具有一定厚度的筒状， 并套设在两个介质层 3之间。 例如图 19所示的结构， 内层的介质层 3为筒状， 且具有底部凸缘， 导电层 1 和外层的介质层 3均为筒状且套在内层介质层 3并置于该凸缘上。  The conductive layer 1 may also be in the form of a cylinder having a certain thickness and interposed between the two dielectric layers 3. For example, in the structure shown in FIG. 19, the dielectric layer 3 of the inner layer is cylindrical and has a bottom flange, and the conductive layer 1 and the dielectric layer 3 of the outer layer are both cylindrical and are placed on the inner dielectric layer 3 and placed therein. On the flange.
或者， 导电层 1为厚度较薄的一个环形导电箔片， 贴附在两介质层 3之 间的表面上， 或者是电镀到该表面上。 当然， 该环形导电箔片并不一定覆盖 两介质层 3之间的全部表面， 可只覆盖部分。 且该环形导电箔片可以为完整 的片状， 也可在其中设有镂空， 例如开有细长的缝隙、 镂空成网格状等。  Alternatively, the conductive layer 1 is a thin conductive foil of a thin thickness attached to the surface between the two dielectric layers 3 or plated onto the surface. Of course, the annular conductive foil does not necessarily cover the entire surface between the two dielectric layers 3, but may cover only a portion. Moreover, the annular conductive foil may be in the form of a complete sheet, or may be provided with a hollow therein, for example, an elongated slit, a hollow mesh, or the like.
导电层 1也可能不为完整的环状， 为多块相同或不同的导电箔片构成， 每块箔片构成一个人造微结构。 每个导电层 1上包括多个互不电连接的人造 微结构， 每个人造微结构为导电材料制成的具有几何图案的结构。  The conductive layer 1 may also not be a complete ring, and is composed of a plurality of identical or different conductive foils, each of which constitutes an artificial microstructure. Each of the conductive layers 1 includes a plurality of artificial microstructures that are not electrically connected to each other, and each of the artificial microstructures has a geometric pattern structure made of a conductive material.
如图 23所示， 导电层 1包括多个雪花型人造微结构。 当然， 人造微结构 也可以为其他形状， 例如圆环形、 工字形、 方片形等。  As shown in Fig. 23, the conductive layer 1 includes a plurality of snowflake-type artificial microstructures. Of course, the artificial microstructure can also be other shapes, such as a circular ring, an I-shape, a square shape, and the like.
本发明的谐振子并不限于介质层 3只有两层， 如图 20、 图 21、 图 22所 示， 谐振子还可以包括多于两个介质层 3的结构。  The resonator of the present invention is not limited to the dielectric layer 3 having only two layers. As shown in Figs. 20, 21, and 22, the resonator may further include a structure of more than two dielectric layers 3.
如图 20、 图 21所示， 介质层 3和导电层 1均有多个， 且介质层 3与导 电层 1交替地设置。 各个介质层均为筒状且依次内外套设， 任意相邻两筒状 介质筒之间均设有导电层。 同样， 导电层 1可以是具有一定厚度的筒状， 与 介质层 3依次交替的内外套设， 也可以是厚度较薄的导电箔片。  As shown in Fig. 20 and Fig. 21, a plurality of dielectric layers 3 and conductive layers 1 are provided, and the dielectric layer 3 and the conductive layer 1 are alternately disposed. Each of the dielectric layers is cylindrical and sequentially jacketed, and a conductive layer is disposed between any adjacent two cylindrical dielectric cylinders. Similarly, the conductive layer 1 may be a cylindrical shape having a certain thickness, and may be an inner jacket alternately with the dielectric layer 3, or may be a thin conductive foil.
当介质层 3和导电层 1均有两层或两层以上时， 本发明的谐振子有多种 形式。 例如， 不同介质层 3 的高度可相同， 也可不完全相同。 图 21所示的 介质层 3从外到内， 其高度依次递减， 导电层 1的高度也依次递减。 反之亦 然。 当然， 介质层 3和导电层 1的高度可根据实际需要随意设置。  When both the dielectric layer 3 and the conductive layer 1 have two or more layers, the resonator of the present invention has various forms. For example, the heights of the different dielectric layers 3 may or may not be the same. The dielectric layer 3 shown in Fig. 21 is descended from the outside to the inside, and the height of the conductive layer 1 is also successively decreased. vice versa. Of course, the heights of the dielectric layer 3 and the conductive layer 1 can be arbitrarily set according to actual needs.
另外， 不同导电层 3在相应两层介质层 3上的相对位置也可相同或不完 全相同。 例如， 图 21所示的导电层 3覆盖相邻两介质层之间相接触的最大 面积， 当然， 也可部分覆盖各接触面的面积， 或者从外到内， 导电层 1的高 度逐渐上升或下降， 或者随机设置等， 本文也不做限制。 上文已知， 相邻两介质层 3之间的导电层为一个独立的导电层， 每个导 电层可以是环形导电箔片整体， 也可为一个或多个人造微结构。 每个导电层 里的人造微结构可相同， 也可不同。 不同导电层的人造微结构也可相同或不 完全相同， 图 22、 图 23示出的为人造微结构均相同的情况， 不完全相同的 情况是可以理解到的。 In addition, the relative positions of the different conductive layers 3 on the respective two dielectric layers 3 may also be the same or not identical. For example, the conductive layer 3 shown in FIG. 21 covers the maximum area of contact between adjacent dielectric layers. Of course, the area of each contact surface may be partially covered, or the height of the conductive layer 1 may gradually rise from the outside to the inside. Drop, or random settings, etc., this article does not limit. As known above, the conductive layer between adjacent dielectric layers 3 is a separate conductive layer, and each conductive layer may be an integral annular foil or one or more artificial microstructures. The artificial microstructures in each conductive layer may be the same or different. The artificial microstructures of the different conductive layers may also be the same or not identical. Figures 22 and 23 show the case where the artificial microstructures are all the same, and the cases are not exactly the same.
下面将结合谐振子的具体应用环境——谐振腔来说明该谐振子的优势以 及其与现有介质陶瓷谐振子的区别。  In the following, the specific application environment of the resonator, the resonant cavity, will be described to illustrate the advantages of the resonator and its difference from the existing dielectric ceramic resonator.
谐振腔如图 24所示， 包括腔体 6、 谐振子和调谐杆 5。 其中， 腔体 6包 括腔体和装在腔体开口端的腔盖， 腔体和腔盖围合成一个封闭空间， 上述谐 振子即位于所述封闭空间内。 腔体或腔盖上装有调谐杆 5， 调谐杆 5末端伸 入封闭空间内并至少部分地伸入筒状谐振子内起调谐作用。  The cavity is shown in Fig. 24 and includes a cavity 6, a resonator and a tuning rod 5. The cavity 6 includes a cavity and a cavity cover mounted at the open end of the cavity, and the cavity and the cavity cover define a closed space, and the resonator is located in the closed space. A tuning rod 5 is mounted on the cavity or chamber cover, and the end of the tuning rod 5 extends into the enclosed space and at least partially extends into the cylindrical resonator for tuning.
调谐杆 5通常为金属螺杆， 通过螺母装在腔盖上， 且伸入腔内的长度可 调， 从而在小范围内调节谐振腔的谐振频率。 调谐杆 5也可以有陶瓷材料制 成， 或者是在一低损耗材料制成的杆外表面包裹金属或陶瓷或其他高介电常 数材料。  The tuning rod 5 is typically a metal screw that is mounted on the chamber cover by a nut and has a length that extends into the chamber to adjust the resonant frequency of the cavity over a small range. The tuning rod 5 can also be made of a ceramic material or a metal or ceramic or other high dielectric constant material coated on the outer surface of a rod made of a low loss material.
调谐杆 4也可以为非金属材料制成， 只要其介电常数大于 1即可， 当然 优选介电常数更高的材料。 本发明不对调谐杆 4的材料和形状做任何限定， 只要其伸入腔体 6内能微扰腔内电磁场分布从而影响谐振频率即可。 调谐杆 5末端可以与凹孔 2内壁或第二导电层 3直接接触。  The tuning rod 4 may also be made of a non-metallic material as long as its dielectric constant is greater than 1, and a material having a higher dielectric constant is of course preferable. The present invention does not limit the material and shape of the tuning rod 4 as long as it protrudes into the cavity 6 to perturb the electromagnetic field distribution in the cavity to affect the resonant frequency. The end of the tuning rod 5 can be in direct contact with the inner wall of the recess 2 or the second conductive layer 3.
另外， 介质层 3的与腔体 6接触的底面可以设置导体连接层， 所述导体 连接层为与上述导电层 3相同或者不同的导体材料制成， 且与通孔内壁上的 第二导电层 3连接起来。 此时该导体连接层可以通过热压或焊接或其他公知 的连接技术与腔体 6固连为一体。  In addition, a bottom surface of the dielectric layer 3 in contact with the cavity 6 may be provided with a conductor connection layer made of the same or different conductor material as the conductive layer 3 and a second conductive layer on the inner wall of the through hole. 3 connected. At this time, the conductor connection layer may be integrally bonded to the cavity 6 by heat pressing or soldering or other known connection technique.
下面将通过具体实验数据来说明本发明的谐振子的优点。  The advantages of the resonator of the present invention will be explained below by specific experimental data.
以一个具有纯陶瓷介质谐振子的单腔谐振腔为对比例， 该谐振腔为圆柱 形， 该陶瓷介质谐振子采用微波介质陶瓷， 尺寸为外径 24mm、 内径 8mm、 高 16mm、 内径对应通孔的圆柱体， 实验测得具有该谐振子的谐振腔的谐振 频率为 1.673GHz。  Taking a single cavity resonator with a pure ceramic dielectric resonator as a reference, the cavity is cylindrical. The ceramic dielectric resonator is made of microwave dielectric ceramic. The size is 24mm outer diameter, 8mm inner diameter, 16mm high, and inner diameter corresponding to the through hole. The cylinder was experimentally measured to have a resonant frequency of 1.673 GHz for the resonator having the resonator.
采用相同的腔体和谐振子， 且该陶瓷介质谐振子分为外径 24mm、 内径 16mm的外层介质层 3和同轴地套设在内的外径 15mm、 内径 8mm的内层介 质层 3， 二者之间设有厚度 lmm的环形导电层 1， 实验测得具有该谐振子的 谐振腔的谐振频率降至 1.24GHz。 由此可见， 采用本发明的谐振子， 可将谐 振频率降低约 400MHz, 相应意味着， 当制备相同谐振频率的谐振腔时， 腔 体体积将大幅度减小。 当上述相同腔体和谐振子， 且将该陶瓷介质谐振子分为外径 24mm、 内 径 21mm的最外层介质层 3、 外径 20mm、 内径 15mm的中间介质层 3以及 外径 14mm、 内径 8mm的最内层介质层 3时， 相邻两介质层之间分别设有一 层厚度 1mm的导电层，测得谐振频率降至 0.58GHz。则谐振频率不到纯陶瓷 谐振子的频率的一半。 The same cavity and resonator are used, and the ceramic dielectric resonator is divided into an outer dielectric layer 3 having an outer diameter of 24 mm and an inner diameter of 16 mm, and an inner dielectric layer 3 having an outer diameter of 15 mm and an inner diameter of 8 mm coaxially disposed therein. An annular conductive layer 1 having a thickness of 1 mm is provided therebetween, and the resonance frequency of the resonant cavity having the resonator is experimentally measured to be 1.24 GHz. It can be seen that with the resonator of the present invention, the resonant frequency can be reduced by about 400 MHz, which means that when a resonant cavity of the same resonant frequency is prepared, the cavity The volume of the body will be greatly reduced. When the same cavity and the resonator are used, the ceramic dielectric resonator is divided into an outermost dielectric layer 3 having an outer diameter of 24 mm and an inner diameter of 21 mm, an intermediate dielectric layer 3 having an outer diameter of 20 mm and an inner diameter of 15 mm, and an outer diameter of 14 mm and an inner diameter of 8 mm. In the innermost dielectric layer 3, a conductive layer having a thickness of 1 mm is disposed between adjacent dielectric layers, and the measured resonance frequency is reduced to 0.58 GHz. Then the resonant frequency is less than half the frequency of the pure ceramic resonator.
因此， 采用本发明的谐振子及其谐振腔， 其谐振频率可大大降低， 因此 在实现相同谐振频率的条件下， 谐振腔的体积可大幅度减小。  Therefore, with the resonator of the present invention and its resonant cavity, the resonant frequency can be greatly reduced, so that the volume of the resonant cavity can be greatly reduced under the condition of achieving the same resonant frequency.
基于上述单腔的谐振腔的特点， 本发明还涉及一种滤波器件， 可以为带 通滤波器、 带阻滤波器、 高通滤波器、 低通滤波器或多频段滤波器、 双工器 或者其他具有滤波功能的器件， 其包括至少一个谐振腔， 而其中至少一个谐 振腔为上述谐振腔。  Based on the characteristics of the single cavity resonator described above, the present invention also relates to a filter device, which may be a band pass filter, a band stop filter, a high pass filter, a low pass filter or a multi-band filter, a duplexer or the like. A device having a filtering function, comprising at least one resonant cavity, wherein at least one of the resonant cavities is the resonant cavity.
进而， 本发明还保护一种具有上述滤波器件的电磁波设备， 该电磁波设 备可以是任何一种需要用到滤波器件的设备， 例如飞机、 雷达、 基站、 卫星 等。这些电磁波设备会接收和发送信号，并在接收之后或发送之前进行滤波， 以使所接收或发送的信号满足需求， 因此电磁波设备至少还包括与滤波器件 的输入端连接的信号发射模块、 与滤波器件的输出端连接的信号接收模块。  Further, the present invention also protects an electromagnetic wave device having the above filter member, which may be any device that requires a filter device, such as an airplane, a radar, a base station, a satellite, or the like. These electromagnetic wave devices receive and transmit signals and filter them after reception or before transmission so that the received or transmitted signals satisfy the requirements. Therefore, the electromagnetic wave device further includes at least a signal transmitting module connected to the input end of the filter device, and filtering. A signal receiving module connected to the output of the device.
例如， 如图 25所示， 电磁波设备为基站， 基站包括作为滤波器件的双工 器， 双工器包括发信带通滤波器和收信带通滤波器。 发信带通滤波器的输入 端连接发信机， 输出端连接基站天线； 收信带通滤波器的输入端连接基站天 线， 输出端连接收信机。  For example, as shown in Fig. 25, the electromagnetic wave device is a base station, and the base station includes a duplexer as a filter member, and the duplexer includes a transmit band pass filter and a receive band pass filter. The input end of the transmit bandpass filter is connected to the transmitter, and the output is connected to the base station antenna; the input end of the receive bandpass filter is connected to the base station antenna, and the output is connected to the receiver.
则对于发信带通滤波器， 其信号发射模块为发信机， 信号接收模块为基 站天线。 而对于收信带通滤波器， 其信号发射模块为基站天线， 信号接收模 块为收信机。  For the transmit bandpass filter, the signal transmitting module is a transmitter, and the signal receiving module is a base station antenna. For the receive bandpass filter, the signal transmitting module is a base station antenna, and the signal receiving module is a receiver.
本发明由于采用内外壁都具有导电层的谐振子， 优选导电层为环形筒状 结构， 有利于降低具有该谐振子的谐振腔的谐振频率， 从而大大缩小谐振腔 的体积， 具有该谐振腔的滤波器件和电磁波设备的体积也会随之明显减小。 上面结合附图对本发明的实施例进行了描述， 但是本发明并不局限于上述的具体 实施方式， 上述的具体实施方式仅仅是示意性的， 而不是限制性的， 本领域的普通技 术人员在本发明的启示下， 在不脱离本发明宗旨和权利要求所保护的范围情况下， 还 可做出很多形式， 这些均属于本发明的保护之内。  In the present invention, since the resonator having the conductive layer on both the inner and outer walls is used, it is preferable that the conductive layer is an annular cylindrical structure, which is advantageous for reducing the resonant frequency of the resonant cavity having the resonator, thereby greatly reducing the volume of the resonant cavity, and having the resonant cavity The volume of the filter components and electromagnetic wave devices is also significantly reduced. The embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative and not restrictive, and those skilled in the art In the light of the present invention, many forms may be made without departing from the spirit and scope of the invention as claimed.

Claims

权 利 要 求 书 Claim
1. 一种谐振子， 其特征在于， 所述谐振子包括介质本体或者至少两个介质 层， 所述介质本体上设有导电层， 相邻的两个所述介质层之间设有导电 层。 A resonator, characterized in that the resonator includes a dielectric body or at least two dielectric layers, the dielectric body is provided with a conductive layer, and a conductive layer is disposed between two adjacent dielectric layers. .
2. 根据权利要求 1 所述的谐振子， 其特征在于 所述介质本体表面上开设 有凹孔， 所述导电层由导电材料构成。  2. The resonator according to claim 1, wherein a recessed hole is formed in a surface of the dielectric body, and the conductive layer is made of a conductive material.
3. 根据权利要求 2所述的谐振子， 其特征在于 所述凹孔内设置有所述导 电层。  The resonator according to claim 2, wherein the conductive layer is provided in the recess.
4. 根据权利要求 3 所述的谐振子， 其特征在于 所述导电层直接附着在所 述凹孔内壁上。  The resonator according to claim 3, wherein the conductive layer is directly attached to the inner wall of the recess.
5. 根据权利要求 3 所述的谐振子， 其特征在于 所述导电层通过连接媒介 固定在所述凹孔内壁的侧面或底面上。  The resonator according to claim 3, wherein the conductive layer is fixed to a side surface or a bottom surface of the inner wall of the recessed hole by a connection medium.
6. 根据权利要求 3 所述的谐振子， 其特征在于 所述介质本体由介电常数 大于 1的材料制成。  6. The resonator of claim 3, wherein the dielectric body is made of a material having a dielectric constant greater than one.
7. 根据权利要求 3 所述的谐振子， 其特征在于 所述介质本体由陶瓷材料 制成。  The resonator according to claim 3, wherein the medium body is made of a ceramic material.
8. 根据权利要求 3所述的谐振子， 其特征在于， 所述凹孔为盲孔或通孔。 The resonator according to claim 3, wherein the recessed hole is a blind hole or a through hole.
9. 根据权利要求 3 所述的谐振子， 其特征在于， 所述导电层为金属筒， 所 述介质本体为筒状且套设在所述金属筒外。 The resonator according to claim 3, wherein the conductive layer is a metal cylinder, and the medium body is cylindrical and sleeved outside the metal cylinder.
10.根据权利要求 3 所述的谐振子， 其特征在于， 所述导电层覆盖在所述凹 孔内壁的侧面或底面上， 或者所述导电层覆盖在凹孔内壁的整个内壁表 面上。 The resonator according to claim 3, wherein the conductive layer covers a side surface or a bottom surface of the inner wall of the recess, or the conductive layer covers the entire inner wall surface of the inner wall of the recess.
11.根据权利要求 3 所述的谐振子， 其特征在于， 所述导电层的导电材料为 金属。  The resonator according to claim 3, wherein the conductive material of the conductive layer is a metal.
12.根据权利要求 11所述的谐振子， 其特征在于， 所述导电材料为银、 铜或 金， 或者为含有银、 铜或金中一种或两种或三种的合金。  The resonator according to claim 11, wherein the conductive material is silver, copper or gold, or an alloy containing one or two or three of silver, copper or gold.
13.根据权利要求 3 所述的谐振子， 其特征在于， 所述导电层的导电材料为 导电的非金属。  The resonator according to claim 3, wherein the conductive material of the conductive layer is a conductive non-metal.
14.根据权利要求 13所述的谐振子，其特征在于，所述导电材料为导电石墨、 铟锡氧化物或渗铝氧化锌。 The resonator according to claim 13, wherein the conductive material is conductive graphite, Indium tin oxide or aluminized zinc oxide.
根据权利要求 2所述的谐振子， 其特征在于， 所述介质本体外侧壁设置 有所述导电层， 所述导电层为第一导电层。 The resonator according to claim 2, wherein the outer wall of the medium body is provided with the conductive layer, and the conductive layer is a first conductive layer.
根据权利要求 15所述的谐振子， 其特征在于， 所述第一导电层直接附着 在所述介质本体外侧壁。 The resonator according to claim 15, wherein said first conductive layer is directly attached to said outer wall of said medium body.
根据权利要求 15所述的谐振子， 其特征在于， 所述第一导电层通过连接 媒介固定在所述介质本体外侧壁。 The resonator according to claim 15, wherein said first conductive layer is fixed to said outer wall of said medium body by a connection medium.
根据权利要求 15所述的谐振子， 其特征在于， 所述第一导电层覆盖所述 介质本体的外侧壁的全部或局部表面上。 根据权利要求 15所述的谐振子，其特征在于，所述第一导电层为金属筒， 所述介质本体为筒状且内置在所述金属筒内。 The resonator according to claim 15, wherein said first conductive layer covers all or part of a surface of an outer side wall of said dielectric body. The resonator according to claim 15, wherein said first conductive layer is a metal cylinder, and said medium body is cylindrical and built in said metal cylinder.
根据权利要求 15所述的谐振子， 其特征在于， 所述凹孔内壁上设置有导 电材料构成的第二导电层。 The resonator according to claim 15, wherein the inner wall of the recessed hole is provided with a second conductive layer made of a conductive material.
根据权利要求 20所述的谐振子， 其特征在于， 所述第二导电层直接附着 在所述凹孔内壁上。 The resonator according to claim 20, wherein said second conductive layer is directly attached to the inner wall of said recess.
根据权利要求 20所述的谐振子， 其特征在于， 所述第二导电层通过连接 媒介固定在所述凹孔内壁的侧面或底面上。 The resonator according to claim 20, wherein said second conductive layer is fixed to a side surface or a bottom surface of said inner wall of said recessed hole by a connecting medium.
根据权利要求 20所述的谐振子，其特征在于，所述第二导电层为金属筒， 所述介质本体为筒状且套设在所述金属筒外。 The resonator according to claim 20, wherein the second conductive layer is a metal cylinder, and the medium body is cylindrical and sleeved outside the metal cylinder.
根据权利要求 20所述的谐振子， 其特征在于， 所述第二导电层覆盖在所 述凹孔内壁的侧面或底面上， 或者所述第二导电层覆盖在所述凹孔内壁 的整个内壁表面上。 The resonator according to claim 20, wherein the second conductive layer covers a side surface or a bottom surface of the inner wall of the recessed hole, or the second conductive layer covers the entire inner wall of the inner wall of the recessed hole On the surface.
根据权利要求 15所述的谐振子， 其特征在于， 所述第一导电层为一个导 电箔片或者包括多个具有几何图形的导电箔片结构。 The resonator according to claim 15, wherein said first conductive layer is a conductive foil or comprises a plurality of conductive foil structures having a geometric pattern.
根据权利要求 1 所述的谐振子， 其特征在于， 所述介质层和导电层均有 多个， 且所述介质层与导电层交替地设置。 The resonator according to claim 1, wherein a plurality of the dielectric layer and the conductive layer are provided, and the dielectric layer and the conductive layer are alternately disposed.
根据权利要求 1 所述的谐振子， 其特征在于， 所述至少两个介质层均为 筒状且依次内外套设， 任意相邻两筒状介质筒之间均设有导电层。 The resonator according to claim 1, wherein the at least two dielectric layers are each cylindrical and sequentially jacketed, and a conductive layer is disposed between any adjacent two cylindrical dielectric cylinders.
根据权利要求 27所述的谐振子， 其特征在于， 所述导电层为筒状， 且与 所述多个介质层依次交替的内外套设。 根据权利要求 27所述的谐振子， 其特征在于， 每个所述导电层为一环状 导电箔片。 The resonator according to claim 27, wherein the conductive layer is cylindrical and is provided with an inner jacket alternately alternating with the plurality of dielectric layers. The resonator according to claim 27, wherein each of said conductive layers is an annular conductive foil.
根据权利要求 1 所述的谐振子， 其特征在于， 每个所述导电层包括至少 一个人造微结构。 The resonator of claim 1 wherein each of said conductive layers comprises at least one artificial microstructure.
根据权利要求 30所述的谐振子， 其特征在于， 每个所述导电层包括多个 互不电连接的人造微结构， 每个人造微结构为导电材料制成的具有几何 图案的结构。 A resonator according to claim 30, wherein each of said conductive layers comprises a plurality of artificial microstructures which are not electrically connected to each other, and each of said artificial microstructures is a structure having a geometric pattern made of a conductive material.
根据权利要求 26所述的谐振子， 其特征在于 ， 不同介质层的高度相同或 者不完全相同。 A resonator according to claim 26, wherein the heights of the different dielectric layers are the same or not identical.
根据权利要求 26所述的谐振子， 其特征在于， 不同导电层的相对位置相 同或不完全相同。 A resonator according to claim 26, wherein the relative positions of the different conductive layers are the same or not identical.
根据权利要求 30所述的谐振子， 其特征在于， 不同导电层的人造微结构 相同或不完全相同。 A resonator according to claim 30, wherein the artificial microstructures of the different conductive layers are the same or not identical.
根据权利要求 1 所述的谐振子， 其特征在于， 所述介质层由介电常数大 于 1的材料制成。 A resonator according to claim 1, wherein said dielectric layer is made of a material having a dielectric constant greater than one.
根据权利要求 1 所述的谐振子， 其特征在于， 所述介质层由介电常数大 于 30的材料制成。 The resonator according to claim 1, wherein said dielectric layer is made of a material having a dielectric constant of more than 30.
根据权利要求 36所述的谐振子， 其特征在于， 所述介质层由陶瓷材料制 成。 A resonator according to claim 36, wherein said dielectric layer is made of a ceramic material.
根据权利要求 30所述的谐振子， 其特征在于， 所述导电层直接附着于相 邻两介质层表面或者与之间隔设置。 The resonator according to claim 30, wherein said conductive layer is directly attached to or spaced apart from the surface of the adjacent two dielectric layers.
—种谐振腔， 包括腔体、 位于所述腔体内的谐振子， 其特征在于， 所述 谐振子为如权利要求 1至 14任意一项所述的谐振子， 其包括介质本体， 所述介质本体表面上开设有凹孔， 所述凹孔内壁上附着有导电材料构成 的导电层。 a resonant cavity, comprising a cavity, a resonator located in the cavity, wherein the resonator is a resonator according to any one of claims 1 to 14, comprising a medium body, the medium A concave hole is formed in the surface of the body, and a conductive layer made of a conductive material is attached to the inner wall of the concave hole.
根据权利要求 39所述的谐振腔， 其特征在于， 所述谐振腔还包括装在所 述腔体上并伸入所述腔体腔内起调谐所用的调谐杆， 所述调谐杆与所述 凹孔相向设置。 The resonant cavity according to claim 39, wherein said resonant cavity further comprises a tuning rod mounted on said cavity and extending into said cavity for tuning, said tuning lever and said concave The holes are facing each other.
根据权利要求 40所述的谐振腔， 其特征在于， 所述介质本体上设有至少 两个凹孔， 与每个凹孔相对的位置均设有一个调谐杆。 The resonator according to claim 40, wherein the medium body is provided with at least two recessed holes, and a tuning rod is disposed at a position opposite to each of the recessed holes.
根据权利要求 40所述的谐振腔， 其特征在于， 所述调谐杆为介电常数大 于 1的非金属材料制成的螺杆或者为金属螺杆。 The resonant cavity according to claim 40, wherein said tuning rod has a large dielectric constant The screw made of a non-metallic material of 1 is either a metal screw.
根据权利要求 41所述的谐振腔， 其特征在于， 所述凹孔为通孔， 与所述 通孔相连接的介质本体表面上附着有导体连接层。 The resonator according to claim 41, wherein the recessed hole is a through hole, and a conductor connecting layer is attached to a surface of the dielectric body connected to the through hole.
根据权利要求 43所述的谐振腔， 其特征在于， 所述导体连接层与所述谐 振腔的内壁通过焊接或热压或螺纹配合或粘接的方式固定连接为一体。 —种谐振腔， 包括腔体、 位于所述腔体内的谐振子， 其特征在于， 所述 谐振子为如权利要求 15至 25任意一项所述的谐振子， 其包括介质本体， 所述介质本体表面上开设有凹孔， 所述介质本体外侧壁设置有导电材料 构成的第一导电层。 The resonant cavity according to claim 43, wherein the conductor connecting layer and the inner wall of the resonant cavity are fixedly coupled by welding or hot pressing or screwing or bonding. a resonant cavity, comprising a cavity, a resonator located in the cavity, wherein the resonator is a resonator according to any one of claims 15 to 25, comprising a medium body, the medium A recessed hole is formed in the surface of the body, and the outer side wall of the medium body is provided with a first conductive layer made of a conductive material.
根据权利要求 45所述的谐振腔， 其特征在于， 所述凹孔内壁上设置有导 电材料构成的第二导电层。 The resonator according to claim 45, wherein the inner wall of the recess is provided with a second conductive layer made of a conductive material.
根据权利要求 45所述的谐振腔， 其特征在于， 所述谐振腔还包括装在所 述腔体上并伸入所述腔体腔内起调谐所用的调谐杆， 所述调谐杆与所述 凹孔相向设置。 The resonant cavity according to claim 45, wherein said resonant cavity further comprises a tuning rod mounted on said cavity and extending into said cavity for tuning, said tuning lever and said concave The holes are facing each other.
根据权利要求 47所述的谐振腔， 其特征在于， 所述介质本体上设有至少 两个凹孔， 与每个凹孔相对的位置均设有一个调谐杆。 The resonant cavity according to claim 47, wherein the medium body is provided with at least two recessed holes, and a tuning rod is disposed at a position opposite to each of the recessed holes.
根据权利要求 47所述的谐振腔， 其特征在于， 所述调谐杆为介电常数大 于 1的非金属材料制成的螺杆或者为金属螺杆。 A resonant cavity according to claim 47, wherein said tuning rod is a screw made of a non-metallic material having a dielectric constant greater than one or a metal screw.
根据权利要求 49所述的谐振腔， 其特征在于， 所述凹孔为通孔， 与所述 通孔相连接的介质本体表面上附着有导体连接层。 The resonator according to claim 49, wherein the recessed hole is a through hole, and a conductor connecting layer is attached to a surface of the dielectric body connected to the through hole.
根据权利要求 50所述的谐振腔， 其特征在于， 所述导体连接层与所述谐 振腔的内壁通过焊接或热压或螺纹配合或粘接的方式固定连接为一体。 根据权利要求 45所述的谐振腔， 其特征在于， 所述第一导电层为一个导 电箔片或者包括多个具有几何图形的导电箔片结构。 The resonant cavity according to claim 50, wherein said conductor connecting layer and said inner wall of said resonant cavity are fixedly coupled by welding or hot pressing or screwing or bonding. A resonant cavity according to claim 45, wherein said first conductive layer is a conductive foil or comprises a plurality of conductive foil structures having a geometric pattern.
—种谐振腔， 包括腔体、 位于所述腔体内的谐振子， 其特征在于， 所述 谐振子为如权利要求 26至 38任意一项所述的谐振子， 其包括至少两个 介质层， 相邻的两个所述介质层之间设有导电层。 a resonant cavity, comprising a cavity, a resonator located in the cavity, wherein the resonator is a resonator according to any one of claims 26 to 38, comprising at least two dielectric layers, A conductive layer is disposed between two adjacent dielectric layers.
根据权利要求 53所述的谐振腔， 其特征在于， 所述至少两个介质层均为 筒状且依次内外套设， 任意相邻两筒状介质筒之间均设有导电层。 The resonant cavity according to claim 53, wherein the at least two dielectric layers are each cylindrical and are sequentially jacketed, and a conductive layer is disposed between any adjacent two cylindrical dielectric cylinders.
根据权利要求 53所述的谐振腔， 其特征在于， 所述谐振腔还包括装在所 述腔体上并伸入所述腔体内起调谐所用的调谐杆， 所述调谐杆与所述凹 孔相向设置。 The resonant cavity according to claim 53, wherein said resonant cavity further comprises a tuning rod mounted on said cavity and extending into said cavity for tuning, said tuning lever and said concave The holes are facing each other.
根据权利要求 55所述的谐振腔， 其特征在于， 所述调谐杆为介电常数大 于 1的非金属材料制成的螺杆。 A resonant cavity according to claim 55, wherein said tuning rod is a screw made of a non-metallic material having a dielectric constant greater than one.
根据权利要求 55所述的谐振腔， 其特征在于， 所述调谐杆为金属螺杆。 根据权利要求 57所述的谐振腔， 其特征在于， 所述介质层底部附着有导 体连接层。 A resonant cavity according to claim 55, wherein said tuning rod is a metal screw. The resonator according to claim 57, wherein a conductor connection layer is attached to the bottom of the dielectric layer.
根据权利要求 58所述的谐振腔， 其特征在于， 所述导体连接层与所述谐 振腔的内壁通过焊接或热压或螺纹配合或粘接的方式固定连接为一体。 根据权利要求 53所述的谐振腔， 其特征在于， 每个所述导电层包括至少 一个人造微结构。 The resonant cavity according to claim 58, wherein said conductor connecting layer and said inner wall of said resonant cavity are fixedly coupled by welding or hot pressing or screwing or bonding. A resonant cavity according to claim 53, wherein each of said conductive layers comprises at least one artificial microstructure.
一种滤波器件， 包括一个或多个谐振腔， 其特征在于， 至少一个谐振腔 为如权利要求 39至 60任意一项所述的谐振腔。 A filter device comprising one or more resonant cavities, characterized in that at least one resonant cavity is a resonant cavity as claimed in any one of claims 39 to 60.
根据权利要求 61所述的滤波器件， 其特征在于， 所述滤波器件为滤波器 或双工器。 A filter device according to claim 61, wherein said filter member is a filter or a duplexer.
根据权利要求 61所述的滤波器件， 其特征在于， 所述谐振子的导电层与 所述谐振腔接触以接地。 The filter device according to claim 61, wherein the conductive layer of the resonator is in contact with the cavity to be grounded.
根据权利要求 61所述的滤波器件， 其特征在于， 所述滤波器件包括多个 谐振腔， 每个谐振腔内设置有一个所述谐振子， 每个谐振子的凹孔对应 个调谐杆。 A filter device according to claim 61, wherein said filter member comprises a plurality of resonators, each of said resonators being provided with said one of said resonators, and each of said resonators has a recessed hole corresponding to a tuning rod.
根据权利要求 64所述的滤波器件， 其特征在于， 所述滤波器件的谐振腔 与谐振腔之间为开窗耦合， 且每个开窗位置均设置有耦合杆。 The filter device according to claim 64, wherein the resonant cavity of the filter member is coupled to the resonant cavity by a window, and each of the window opening positions is provided with a coupling rod.
根据权利要求 61所述的滤波器件， 其特征在于， 所述滤波器件为带通滤 波器、 带阻滤波器、 高通滤波器、 低通滤波器或多频段滤波器。 A filter device according to claim 61, wherein said filter element is a band pass filter, a band stop filter, a high pass filter, a low pass filter or a multi band filter.
一种电磁波设备， 其特征在于， 包括如权利要求 61至 66任意一项所述 的滤波器件。 An electromagnetic wave device characterized by comprising the filter device according to any one of claims 61 to 66.
根据权利要求 67所述的电磁波设备， 其特征在于， 所述电磁波设备为飞 机、 雷达、 基站或者卫星。 The electromagnetic wave device according to claim 67, wherein said electromagnetic wave device is an aircraft, a radar, a base station or a satellite.
—种电磁波设备， 包括信号发射模块、 信号接收模块以及滤波器件， 所 述滤波器件的输入端与所述信号发射模块连接， 输出端与信号接收模块 连接， 其特征在于， 所述滤波器件为如权利要求 61至 66任意一项所述 的滤波器件。 根据权利要求 69所述的电磁波设备，其特征在于，所述电磁波设备为飞机、 雷达、 基站或者卫星。 An electromagnetic wave device, comprising: a signal transmitting module, a signal receiving module and a filter component, wherein an input end of the filter component is connected to the signal transmitting module, and an output end is connected to the signal receiving module, wherein the filter component is A filter device according to any one of claims 61 to 66. The electromagnetic wave apparatus according to claim 69, wherein said electromagnetic wave device is an airplane, a radar, a base station or a satellite.
PCT/CN2013/084837 2012-11-20 2013-10-08 Oscillator, resonant cavity, filter device, and electromagnetic device WO2014079281A1 (en)

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