WO2017000259A1 - Résonateur diélectrique et filtre à triple mode - Google Patents

Résonateur diélectrique et filtre à triple mode Download PDF

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Publication number
WO2017000259A1
WO2017000259A1 PCT/CN2015/082970 CN2015082970W WO2017000259A1 WO 2017000259 A1 WO2017000259 A1 WO 2017000259A1 CN 2015082970 W CN2015082970 W CN 2015082970W WO 2017000259 A1 WO2017000259 A1 WO 2017000259A1
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WO
WIPO (PCT)
Prior art keywords
dielectric
hole
cube
medium
mode
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Application number
PCT/CN2015/082970
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English (en)
Chinese (zh)
Inventor
蒲国胜
市川胜
石晶
沈振
袁本贵
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201580000961.5A priority Critical patent/CN106688138B/zh
Priority to PCT/CN2015/082970 priority patent/WO2017000259A1/fr
Publication of WO2017000259A1 publication Critical patent/WO2017000259A1/fr

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    • 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

Definitions

  • Embodiments of the present invention relate to electromagnetic technology, and more particularly to a three-mode dielectric resonator and filter.
  • the traditional forms of dielectric filters are single-mode dielectric filters, dual-mode dielectric filters, and tri-mode dielectric filters. Among them, traditional single-mode dielectric filters are bulky under the same performance; dual-mode or tri-mode
  • the dielectric filter applies the multi-mode property of the resonator, and realizes one cavity to generate two or three resonance modes, which can reduce the volume of the filter.
  • 1 is a schematic diagram of a prior art three-mode dielectric resonator. As shown in FIG. 1, the three-mode dielectric resonator includes a cubic conductive outer casing 1 and a dielectric cube 2, which are orthogonal to each other through X, Y, and Z through a dielectric cube 2. Three resonant modes are formed in the direction, and the three-mode dielectric resonator is applied to the filter to form a three-mode dielectric filter, and the coupling between modes is realized by an external perturbation structure.
  • the existing external or internal perturbation structure forms a very weak coupling, and the coupling coupling formed by the filter coupling formed by the three-mode dielectric resonator shown in FIG. 1 has a small coupling relative bandwidth, and it is difficult to satisfy a relatively large coupling bandwidth. Use the demand.
  • the present invention provides a three-mode dielectric resonator and filter that enhances coupling between resonant modes formed by a three-mode dielectric resonator, thereby achieving a large coupling relative bandwidth for achieving a predetermined electrical performance.
  • the present invention provides a three-mode dielectric resonator applied to a filter, comprising: a conductive housing, a dielectric cube, and a support base;
  • the medium cube is disposed in the cavity formed by the conductive outer casing through the support base And the dielectric cube forms three resonant modes in three mutually orthogonal directions;
  • the medium cube includes at least one first medium hole and at least one second medium hole; wherein an axial direction of the first medium hole and the second medium hole are perpendicular to each other.
  • the first medium hole and the second medium hole are perpendicular to an axial direction.
  • the medium cube includes at least one first medium hole and at least one second medium hole, including:
  • the first medium hole is vertically disposed between the first surface and the second surface of the medium cube, and the second medium hole is vertically disposed between the third surface and the fourth surface of the medium cube;
  • the first surface is parallel to the second surface, the third surface is parallel to the fourth surface, the first surface being perpendicular to the third surface.
  • the two pairs of the first medium hole from the center on the first surface to the first surface The distance between the intersections of the corner lines is greater than the first predetermined distance.
  • the second medium hole is at a center on the third surface to the third surface The distance between the intersections of the two diagonal lines is greater than the second predetermined distance.
  • the first medium hole is cylindrical, and the first medium The diameter of the aperture is less than half the length of either side of the first surface.
  • the second medium hole is cylindrical, and the second medium The diameter of the aperture is less than half the length of either side of the third surface.
  • the first medium hole does not penetrate any of the medium cubes a surface; or the first dielectric hole penetrates a surface of the dielectric cube.
  • the second medium hole does not penetrate any of the medium cubes a surface; or the second dielectric hole penetrates a surface of the dielectric cube.
  • the present invention provides a filter comprising the three-mode dielectric resonator provided by any of the above embodiments.
  • the present invention provides a three-mode dielectric resonator and a filter, the three-mode dielectric resonator comprising a conductive outer casing, a dielectric cube and a support base, each of which is provided with at least one first dielectric hole and at least one second dielectric hole on the dielectric cube
  • the magnetic field distribution of the resonant mode changes, resulting in enhanced coupling between the resonant modes formed by the three-mode dielectric resonator, thereby achieving a large coupling relative bandwidth for achieving the intended electrical performance.
  • FIG. 1 is a schematic view of a prior art three-mode dielectric resonator
  • FIG. 2 is a schematic diagram of an application scenario of a three-mode dielectric resonator according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a three-mode dielectric resonator according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic diagram showing a combined distribution of a first dielectric hole and a second dielectric hole according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram showing a combined distribution of a first dielectric hole and a second dielectric hole according to another embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a combined distribution of a first dielectric hole and a second dielectric hole according to another embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a combined distribution of a first dielectric hole and a second dielectric hole according to another embodiment of the present invention.
  • FIG. 2 is a schematic diagram of an application scenario of a three-mode dielectric resonator according to an embodiment of the present invention.
  • This scenario is a schematic diagram of the structure of a radio frequency communication system.
  • the scenario includes an antenna 11, a filter 12, a noise amplifier 13, a power amplifier 17, a mixer 14, a signal generator 15, and a baseband module 16.
  • the filter 12 includes a three-mode dielectric resonator (not shown) provided by the embodiment of the present invention.
  • the antenna 11 is configured to transmit electromagnetic waves to or receive electromagnetic waves from a space in a radio frequency communication system, and the filter 12 is used to The frequency is effectively filtered out at a specific frequency or a frequency other than a specific frequency.
  • the noise amplifier 13 can be a high frequency or intermediate frequency preamplifier of various radio receivers, or an amplifying circuit of a high sensitivity electronic detecting device, and the power amplifier 17 is used for given At distortion rate conditions, the maximum power output is generated to drive the load.
  • FIG. 3 is a schematic structural diagram of a three-mode dielectric resonator according to Embodiment 1 of the present invention.
  • the three-mode dielectric resonator is applied to a filter, as shown in FIG. 3, which includes a conductive outer casing 21, a dielectric cube 22, and a support base 23.
  • the dielectric cube 22 is disposed inside the cavity formed by the conductive outer casing 21 through the support base 23, and the dielectric cube 22 is formed in three mutually orthogonal directions.
  • the three resonant modes are formed; the dielectric cube 22 includes at least one first dielectric hole 24 and at least one second dielectric hole 25; wherein the axial directions of the first dielectric hole 24 and the second dielectric hole 25 are not parallel.
  • the first dielectric aperture 24 and the second dielectric aperture 25 can be used to change the magnetic field distribution of the resonant mode.
  • the resonant frequency is the reciprocal of the resonant period, and the resonant period refers to the time during which the voltage across the resonant time capacitor or the inductor changes by one cycle.
  • the coupling relative bandwidth is the ratio of the coupling bandwidth to the center frequency, and the coupling bandwidth is used to characterize the coupling strength between the resonant modes.
  • the first medium hole 24 and the second medium hole 25 are used to change the magnetic field distribution of each resonance mode, thereby enhancing the coupling strength between the resonance modes, so that the coupling relative bandwidth generated between the resonance frequencies corresponding to the respective resonance modes is changed. Big.
  • the working principle of the three-mode dielectric resonator provided by this embodiment is specifically as follows: three resonant modes generated by the three-mode dielectric resonator, the electromagnetic fields are orthogonal to each other, and the resonant modes are not coupled to each other or the coupling strength is small.
  • the hole in one direction of the dielectric cube can change the magnetic field distribution of the resonance modes corresponding to the other two directions, resulting in strong coupling between the resonance modes corresponding to the other two directions, thereby achieving a larger coupling relative bandwidth. .
  • the direction of the first dielectric hole is x
  • the direction of the second dielectric hole is z
  • the hole is punched in the x direction
  • the distribution of the electromagnetic field in the resonance mode corresponding to the y and z directions changes. Therefore, the coupling between the resonance mode corresponding to the y direction and the resonance mode corresponding to the z direction is enhanced, and the coupling relative bandwidth is increased.
  • the z direction is played.
  • the holes also serve to enhance the coupling between the resonant modes in the x and y directions. Therefore, the coupling between the resonant modes can be enhanced by the first dielectric holes and the second dielectric holes, thereby achieving a large coupling relative bandwidth.
  • the conductive outer casing 21 has a cubic structure, and the conductive outer casing may also have a spherical shape, a column shape, a polygonal body, and the like, and the first medium hole 24 and the second medium hole 25 may be
  • the surface of the dielectric cube 22 may not penetrate the surface of the dielectric cube 22, and the cross section of the first dielectric hole 24 and the second dielectric hole 25 on the dielectric cube 22 may be any shape, which is not included in the present invention. limit.
  • the first dielectric aperture 24 and the second dielectric aperture 25 penetrate the surface of the dielectric cube 22.
  • the first medium hole 24 and the second medium hole 25 have a circular cross section.
  • the three-mode dielectric resonator provided in this embodiment, at least one first dielectric hole and at least one second dielectric hole are disposed on the dielectric cube, and the magnetic field distribution of each resonant mode is changed through the first dielectric hole and the second dielectric hole, so that three The coupling between the resonant modes formed by the mode dielectric resonator is enhanced, thereby Achieve a large coupling relative bandwidth to achieve the purpose of achieving predetermined electrical performance.
  • the axial direction of the first medium hole and the second medium hole are perpendicular, and then the “medium cube includes at least one
  • the first medium hole and the at least one second medium hole may be specifically implemented by: the first medium hole is vertically disposed between the first surface and the second surface of the medium cube, and the second medium hole is vertically disposed at Between the third surface and the fourth surface of the dielectric cube; wherein the first surface is parallel to the second surface, the third surface is parallel to the fourth surface, the first surface being perpendicular to the third surface.
  • the first medium hole may also be disposed between the first surface and the second surface of the medium cube at other non-perpendicular angles, and the second medium hole may also be disposed at other non-perpendicular angles.
  • the first medium hole and the second medium hole may also be respectively disposed on two diagonal lines of the medium cube (ie, diagonal on the diagonal surface)
  • the coupling effect formed by the first medium hole and the second medium hole respectively disposed between the two sets of surfaces in a vertical manner is optimal, but is not limited in the present invention.
  • the distance between the center of the first medium hole on the first surface and the intersection of the two diagonal lines of the first surface is greater than the first predetermined distance.
  • the first predetermined distance is used to make the first medium hole be disposed on the corner of the first surface, and the coupling generated when the first medium hole is located on the corner of the first surface is stronger, so as far as possible
  • the first dielectric holes are disposed on the corners of the first surface such that the coupling between the resonant modes is stronger, thereby generating a larger coupling relative bandwidth, and a person skilled in the art can set the first preset distance according to actual conditions.
  • the distance between the intersection of the two media holes on the third surface from the center to the third surface of the third surface is greater than the second predetermined distance.
  • the second predetermined distance is used to make the second dielectric hole be disposed on the corner of the third surface, so that the coupling between the resonant modes is stronger, thereby generating a larger coupling relative bandwidth.
  • the technician can set the second preset distance according to the actual situation.
  • the upper surface of the dielectric cube 22 is marked as a first surface
  • the lower surface of the dielectric cube 22 is marked as a second surface
  • the front surface of the dielectric cube 22 is marked as a third surface
  • the rear surface of the dielectric cube 22 is labeled as a fourth surface. Since the first medium hole and the second medium hole can be combined in various combinations, the present embodiment will be described in detail below by taking FIG. 4 to FIG. 7 as an example. For the technical solution of the example, each of the dashed boxes in FIGS. 4-7 is a combination.
  • FIG. 4 is a schematic diagram of a combined distribution of a first dielectric hole and a second dielectric hole according to an embodiment of the present invention. As shown in FIG. 4, a first dielectric hole is formed in a corner of the first surface, and a second dielectric hole is formed in a corner of the third surface, and a total of 8 combinations are used (in which each dotted line frame is a type the way).
  • a first dielectric hole and a second dielectric hole are respectively formed on the first surface and the third surface.
  • the distribution of the electromagnetic field is greatly changed due to the perturbation of the dielectric hole. This results in an increase in the coupling between the two resonant modes, achieving a larger coupling relative bandwidth to achieve the desired electrical performance.
  • FIG. 5 is a schematic diagram of a combined distribution of a first dielectric hole and a second dielectric hole according to another embodiment of the present invention. As shown in FIG. 5, a first dielectric hole is formed in a corner of the first surface, and two second dielectric holes are formed in a corner of the third surface, and a total of 12 combinations are used (in which each dotted line frame is Ways)
  • a first dielectric hole is formed on the first surface, and a combination of two second dielectric holes is formed on the third surface, in particular, two second dielectric holes are formed on the diagonal of the third surface.
  • the combination can obtain different coupling amounts.
  • two second dielectric holes are provided on the same side to obtain a smaller coupling amount than one second dielectric hole, and two second dielectric holes are obtained on the diagonal line.
  • a greater amount of coupling than a second dielectric hole achieves the purpose of achieving a predetermined electrical performance.
  • FIG. 6 is a schematic diagram of a combined distribution of a first dielectric hole and a second dielectric hole according to another embodiment of the present invention. As shown in FIG. 6, two first dielectric holes are punched in the corners of the first surface, and a second dielectric hole is formed in the corners of the third surface. There are 16 combinations (one in each dashed box). Ways)
  • two first dielectric holes are formed on the first surface, and a second dielectric hole is formed in the combination of the second surface on the third surface, in particular, two first dielectric holes are formed on the diagonal of the first surface.
  • the combination can obtain different coupling amounts.
  • two second dielectric holes are provided on the same side to obtain a smaller coupling amount than one second dielectric hole, and two second dielectric holes are obtained on the diagonal line. A greater amount of coupling than a second dielectric hole achieves the purpose of achieving a predetermined electrical performance.
  • FIG. 7 is a schematic diagram of a combined distribution of a first dielectric hole and a second dielectric hole according to another embodiment of the present invention. As shown in FIG. 7, two first dielectric holes are punched in the corners of the first surface, and two second dielectric holes are punched in the corners of the third surface, and a total of 24 combinations are used (in which each dashed box is One kind the way).
  • two first dielectric holes are formed on the first surface, and two second dielectric holes are combined in the third surface, in particular, two first dielectrics are formed on the diagonal of the first surface.
  • a combination of two second dielectric holes in the hole or on the diagonal of the third surface can obtain different coupling amounts.
  • two second dielectric holes are provided on the same side to obtain more than one second dielectric hole. With a small coupling amount, two second dielectric holes are provided on the diagonal to obtain a larger coupling amount than a second dielectric hole, so as to achieve a predetermined electrical performance.
  • the combination modes provided by the embodiments shown in FIG. 4 to FIG. 7 are only a few preferred combinations, and the first medium hole and the second medium hole may have other combinations.
  • three combinations of the first medium holes on the first surface and a second medium hole on the third surface are not limited thereto.
  • the coupling between the resonant modes formed by the three-mode dielectric resonator is enhanced, thereby realizing Larger coupling relative bandwidth; and different combinations are selected according to the number and position of the first medium hole and the second medium hole, achieving more flexibility.
  • the first dielectric aperture is cylindrical and the diameter of the first dielectric aperture is less than half the length of either side of the first surface.
  • the second dielectric aperture is cylindrical and the second dielectric aperture has a diameter that is less than half the length of either side of the third surface.
  • the first dielectric hole does not penetrate any surface of the dielectric cube.
  • the first media aperture may not penetrate the first and second surfaces of the dielectric cube.
  • the second dielectric aperture does not penetrate any surface of the dielectric cube.
  • the second media aperture may not penetrate the third and fourth surfaces of the dielectric cube.
  • the first medium hole and the second medium hole may penetrate one surface of the medium cube, or the first medium hole and the second medium hole may penetrate the surface of the two dielectric cubes.
  • the invention is not limited.
  • the diameters of the first medium hole and the second medium hole can be adjusted to adjust the degree of variation of the electromagnetic field distribution, and thus the coupling strength between the resonance modes can be controlled.
  • An embodiment of the present invention further provides a filter, including the three-mode dielectric resonator provided by any of the above embodiments.
  • the filter changes the magnetic field distribution of each resonant mode by providing at least one first dielectric hole and at least one second dielectric hole on the three-mode dielectric resonator, thereby causing a three-mode dielectric resonator to form between resonance modes
  • the coupling is enhanced to achieve a larger coupling relative bandwidth; and the filter does not require the addition of an additional perturbation structure to achieve a larger coupling relative bandwidth, such that the resonant frequency in different directions and the relative bandwidth of the coupling
  • the mutual influence is small, and the independent resonant frequency and the coupled relative bandwidth can be generated, thereby improving the manufacturability of the filter and having high practical value.
  • Embodiments of the present invention also provide a communication device, which may include the foregoing resonator or filter.
  • the communication device can be a base station.
  • the embodiment of the invention further provides a communication system, which may include the foregoing communication device.
  • the communication system can be a wireless communication system or a radar system.

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Abstract

Selon un mode de réalisation, la présente invention concerne un résonateur diélectrique et un filtre à triple mode. Le résonateur diélectrique à triple mode comprend : un boîtier conducteur de l'électricité, un cube diélectrique et une base de support. Le cube diélectrique est disposé par l'intermédiaire de la base de support dans une cavité formée dans le boîtier conducteur de l'électricité et forme trois modes de résonance dans trois directions mutuellement orthogonales. Le cube diélectrique comprend au moins un premier trou diélectrique et au moins un second trou diélectrique, les directions axiales du premier trou diélectrique et du second trou diélectrique n'étant pas parallèles de manière à agrandir des largeurs de bande de couplage relatif entre des fréquences de résonance correspondant à des modes de résonance, ce qui permet d'obtenir de plus grandes largeurs de bande de couplage relatif afin d'obtenir une fonctionnalité électrique prédéterminée.
PCT/CN2015/082970 2015-06-30 2015-06-30 Résonateur diélectrique et filtre à triple mode WO2017000259A1 (fr)

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CN201580000961.5A CN106688138B (zh) 2015-06-30 2015-06-30 三模介质谐振器和滤波器
PCT/CN2015/082970 WO2017000259A1 (fr) 2015-06-30 2015-06-30 Résonateur diélectrique et filtre à triple mode

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PCT/CN2015/082970 WO2017000259A1 (fr) 2015-06-30 2015-06-30 Résonateur diélectrique et filtre à triple mode

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN106982031A (zh) * 2017-04-24 2017-07-25 华南理工大学 一种基于介质谐振器的滤波f类功率放大器
US11502385B2 (en) 2018-08-08 2022-11-15 Nokia Technologies Oy Multi-mode bandpass filter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3675276B1 (fr) 2017-11-14 2023-07-26 Huawei Technologies Co., Ltd. Résonateur diélectrique et filtre
CN107994304B (zh) * 2017-12-26 2021-12-17 京信通信技术(广州)有限公司 多模介质滤波器及其调试方法
CN113782939B (zh) * 2020-06-09 2022-10-28 华为技术有限公司 一种介质谐振器和滤波器

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CN1197305A (zh) * 1997-02-03 1998-10-28 株式会社村田制作所 多模式介电谐振器和调节该谐振器的方法
CN102544649A (zh) * 2012-01-04 2012-07-04 西安电子科技大学 一腔三模滤波器
WO2014128491A1 (fr) * 2013-02-21 2014-08-28 Mesaplexx Pty Ltd Contrôle de couplage dans un filtre par création d'ouverture

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JP2998627B2 (ja) * 1996-02-07 2000-01-11 株式会社村田製作所 誘電体共振器
CN104241744B (zh) * 2014-09-03 2017-05-31 华南理工大学 一种采用单腔五模腔体谐振器的宽带滤波器

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Publication number Priority date Publication date Assignee Title
CN1197305A (zh) * 1997-02-03 1998-10-28 株式会社村田制作所 多模式介电谐振器和调节该谐振器的方法
CN102544649A (zh) * 2012-01-04 2012-07-04 西安电子科技大学 一腔三模滤波器
WO2014128491A1 (fr) * 2013-02-21 2014-08-28 Mesaplexx Pty Ltd Contrôle de couplage dans un filtre par création d'ouverture

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106982031A (zh) * 2017-04-24 2017-07-25 华南理工大学 一种基于介质谐振器的滤波f类功率放大器
CN106982031B (zh) * 2017-04-24 2023-06-16 华南理工大学 一种基于介质谐振器的滤波f类功率放大器
US11502385B2 (en) 2018-08-08 2022-11-15 Nokia Technologies Oy Multi-mode bandpass filter

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CN106688138B (zh) 2019-06-14

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