WO2013129817A1 - Filtre de fréquence radio ayant une structure de cavité - Google Patents

Filtre de fréquence radio ayant une structure de cavité Download PDF

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Publication number
WO2013129817A1
WO2013129817A1 PCT/KR2013/001518 KR2013001518W WO2013129817A1 WO 2013129817 A1 WO2013129817 A1 WO 2013129817A1 KR 2013001518 W KR2013001518 W KR 2013001518W WO 2013129817 A1 WO2013129817 A1 WO 2013129817A1
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WO
WIPO (PCT)
Prior art keywords
radio frequency
frequency filter
case
cavity
enclosure
Prior art date
Application number
PCT/KR2013/001518
Other languages
English (en)
Korean (ko)
Inventor
박남신
정대수
Original Assignee
주식회사 케이엠더블유
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.)
Filing date
Publication date
Priority claimed from KR1020130006945A external-priority patent/KR101869757B1/ko
Application filed by 주식회사 케이엠더블유 filed Critical 주식회사 케이엠더블유
Priority to SE1651093A priority Critical patent/SE540506C2/en
Priority to CN201380011156.3A priority patent/CN104126247B/zh
Priority to SE1451093A priority patent/SE539666C2/en
Priority to JP2014556492A priority patent/JP5883952B2/ja
Publication of WO2013129817A1 publication Critical patent/WO2013129817A1/fr
Priority to US14/333,254 priority patent/US9716301B2/en
Priority to US15/183,148 priority patent/US10090572B1/en

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    • 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
    • H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
    • H01P11/007—Manufacturing frequency-selective devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
    • H01P11/008—Manufacturing resonators
    • 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 signal processing apparatus used in a wireless communication system, and more particularly to a radio frequency filter having a cavity structure, such as a cavity filter.
  • a radio frequency filter having a cavity structure generally includes a plurality of accommodation spaces such as a rectangular parallelepiped, or a cavity structure, through a metal housing, and includes a dielectric resonance element (DR) or a metal resonance rod inside each cavity structure.
  • DR dielectric resonance element
  • Each of the configured resonating elements is provided to generate an ultra high frequency resonance.
  • a cover for shielding the open surface of the cavity structure is provided on the upper part of the cavity structure, and the cover is a tuning structure for tuning the filtering characteristics of the radio frequency filter.
  • a tuning screw and a nut for fixing the tuning screw can be installed.
  • a radio frequency filter having such a cavity structure is used for processing transmission / reception of radio signals in a wireless communication system, and in particular, is typically applied to a base station or a repeater in a mobile communication system.
  • the base station or repeater of a mobile communication system is usually installed on the ground (base volume and weight) base station main body devices, compared to the antenna device is usually installed on a high pole from the ground, the cable between the antenna device and the main body device
  • the installation method for connecting via is still applied.
  • such an installation method causes a problem of loss due to the cable connection between the antenna device and the main body device and a problem of securing the installation space of the main body device
  • the main body devices are also (At least some of the modules) are installed in a pillar for mounting the antenna device and connected directly to the antenna device, or an installation method included in the antenna device is applied.
  • the radio frequency filter having a cavity structure has a structure in which a resonant element is provided in the housing, and a coupling structure of the cover and the housing is basically provided, thereby limiting the weight and size.
  • fastening structures such as a number of tuning screws and fastening nuts, present great constraints on the tilt and miniaturization of radio frequency filters.
  • the present invention is to provide a radio frequency filter having a cavity structure that can be more compact and lightweight.
  • Another object of the present invention is to provide a radio frequency filter having a cavity structure which is simple to manufacture and can have a simplified structure.
  • Still another object of the present invention is to provide a radio frequency filter having a cavity structure which can be designed to enable frequency tuning without employing a fastening structure of a tuning screw and a fixing nut.
  • the present invention provides a radio frequency filter having a cavity structure, including a housing having a hollow inside and a cavity blocked from the outside, and a resonant element located in the inside hollow of the housing.
  • a corrugated structure is formed in which a distance from an inner surface of the enclosure facing the longitudinal end surface of the resonator element is adjusted by external pressure.
  • the housing includes a first case provided with the resonating element and a second case covering the first case, wherein the first and second cases are each formed by press working using one base plate. It is characterized by.
  • the radio frequency filter having a cavity structure according to the present invention can be more compact and lighter, and is designed to be capable of frequency tuning without employing a fastening structure of a tuning screw and a fixing nut, and is simple and simplified. It can have a structure.
  • the manufacturing can be made easily, the cost reduction effect can occur, and there is an advantage that can be easily installed at the time of mounting on the station of the base station, such as small size and light weight.
  • FIG. 1 is an exploded perspective view of a radio frequency filter having a cavity structure according to a first embodiment of the present invention
  • FIG. 2 is a perspective view of the combination of FIG.
  • FIG. 3 is a perspective view taken partially along the line AA ′ of FIG. 2;
  • FIG. 4 is a cross-sectional view taken along the line A-A 'of FIG.
  • FIG. 5 is an exploded perspective view of a radio frequency filter having a cavity structure according to a second embodiment of the present invention.
  • FIG. 6 is a perspective view of a cutaway portion AA ′ in the coupling structure of FIG. 2; FIG.
  • FIG. 7 is an exploded perspective view of a radio frequency filter having a cavity structure according to a third embodiment of the present invention.
  • FIG. 8 is a perspective view of a cutaway portion AA ′ in the coupling structure of FIG. 7;
  • FIG. 9 is an exploded perspective view of a radio frequency filter having a cavity structure according to a fourth embodiment of the present invention.
  • FIG. 10 is a perspective view of the combination of FIG.
  • FIG. 11 is a cutaway perspective view taken along line AA ′ of FIG. 10;
  • FIG. 16 is a perspective view of an upper case of a radio frequency filter having a cavity structure according to a fifth embodiment of the present invention.
  • 17 is a cross-sectional view taken along the line A-A 'of FIG.
  • FIG. 18 is a configuration diagram of an apparatus for tuning a frequency of a radio frequency filter according to the fifth embodiment of FIG.
  • FIG. 19 is a perspective view of an upper case of a radio frequency filter having a cavity structure according to a sixth embodiment of the present invention.
  • FIG. 20 is a cross-sectional view taken along the line A-A 'of FIG.
  • 21 is a perspective view of an upper case of a radio frequency filter having a cavity structure according to a seventh embodiment of the present invention.
  • FIG. 22 is a cross-sectional view taken along line AA ′ of FIG. 21;
  • FIG. 23 is a perspective view of an upper case of a radio frequency filter having a cavity structure according to an eighth embodiment of the present invention.
  • FIG. 24 is a cross-sectional view taken along the line A-A 'of FIG.
  • 25 is a perspective view of an upper case of a radio frequency filter having a cavity structure according to a ninth embodiment of the present invention.
  • FIG. 26 is a cross-sectional view taken along line AA ′ of FIG. 25;
  • FIG. 1 is an exploded perspective view of a radio frequency filter having a cavity structure according to a first embodiment of the present invention
  • FIG. 2 is a combined perspective view of FIG. 1
  • FIG. 3 is a partially cutaway perspective view of FIG. Fig. 2 is a cross sectional view taken along the line A-A '. 1 to 4
  • a radio frequency filter having a cavity structure according to a first embodiment of the present invention has a housing having a hollow inside and a cavity blocked from the outside, similar to the related art.
  • a resonance element is provided in the hollow inside.
  • the enclosure may include a first case in which the resonating element is located, and a second case covering the first case.
  • the enclosure includes a second case having an upper case 10 forming a portion corresponding to an upper side based on a predetermined boundary surface (that is, a joining surface) of all the cases forming the cavity, wherein the enclosure includes the second case.
  • a lower case 20 is formed as a second case to form a portion corresponding to the lower side with respect to the interface.
  • the upper and lower cases 10 and 20 are joined to each other by soldering or welding at the interface.
  • the upper case 10 is formed in the form of a plate to form only the upper surface when viewed in the entire filter structure, and acts like a cover
  • the lower case 20 is the lower surface in the overall filter structure It is shown as forming a side with.
  • the planar structure of the cavity is generally circular, and accordingly, the planar structures of the upper and lower cases 10 and 20 are formed in a circular shape.
  • the upper and lower cases 10 and 20 are shown.
  • the planar structure may be formed in a variety of forms, including a rectangular shape.
  • the lower case 20 is protruded upward from the center of the lower surface toward the inside of the cavity, the inside is empty, the pocket-shaped protrusion 202 whose inlet is directed to the outside of the entire case is the remaining portion And seamlessly, that is, integrally formed without a separate joint surface.
  • the protrusion 202 serves as a resonant element in the corresponding radio frequency filter.
  • the lower case 20 having the protruding portion 202 may be formed by using a press molding method, for example, using a base material in the form of a plate made of aluminum or magnesium (including alloy). It may be formed using a deep drawing press molding method to form the deep protrusion 202.
  • the size of the protrusion 202 is appropriately designed in consideration of the frequency and the like so as to function as the resonance element.
  • the lower case 20 is further formed with a through hole (not shown) in a suitable portion in consideration of the position of the protrusion 20 to connect the input and output terminals.
  • the upper case 10 may be formed by using a press forming method using a base material in the form of a plate made of aluminum or magnesium (including alloy).
  • the upper case 10 has an inner surface facing the longitudinal front end surface of the protrusion 202 at a portion corresponding to the protrusion 202 corresponding to the resonance element of the lower case 20. That is, the corrugation structure 102 is formed so that the gap with the inner surface of the upper case) can be adjusted by the external pressure.
  • the corrugated structure 102 has a corrugated structure 102 in which a curved surface protruding up and down is formed at least one or more times along a closed loop shape (for example, along a circle). As shown more clearly in Figure 4, the corrugated structure 102 is formed so that the cut surface of the upper case 10 appears in a zigzag form.
  • the corrugated structure 102 is to replace the conventional fastening structure of the tuning screw and the fixing nut, in the embodiment of the present invention, the filtering characteristics are optimized or the reference value is satisfied while monitoring the filtering characteristics during frequency tuning.
  • the corrugated structure 102 is pushed upward from the upper side so that the distance between the corrugated structure 102 and the upper end of the protrusion 202 of the lower case 20 is narrowed until the corrugated structure 102 is narrowed.
  • 4A illustrates an example of the corrugated structure 102 in an initial manufacturing state
  • FIG. 4B illustrates an example in which the corrugated structure 102 is unfolded by a frequency tuning operation.
  • the frequency tuning structure may be formed using the corrugation structure 102, and the corrugation structure 102 may have a suitable material and thickness so as not to be restored to its original state after deformation according to the frequency tuning operation. And size. At this time, the thickness of the corrugated structure 102 may be set slightly thinner than the thickness of the upper case 10.
  • the upper case 10 having a pleat structure 102 which is a frequency tuning structure is one press molding It can be formed by a process
  • the lower case (10, 20) having a projection 202, which also serves as a resonator element can be formed by a single press molding, the conventional fastening structure of the tuning screw and the fixing nut Compared with the structure employing a simpler structure and can be manufactured at a lower cost and faster, more compact and lighter weight is possible.
  • PIMD Passive InterModulation Distortion
  • the radio frequency filter structure according to the embodiment of the present invention can be used for a more compact and higher power, compared to the structure having a conventional tuning screw.
  • a tuning screw is used, for example, at a high power of 50 W, the clearance between the tuning screw and the resonator element should be maintained at least 5 mm. This is because the capacitance is concentrated at the edge of the tuning screw, the closer the gap between the tuning screw and the resonator element, the greater the possibility of sparking.
  • the present invention does not include such a tuning screw, the gap between the resonating element, the upper end, and the upper case can be further narrowed, and more stable operation can be achieved even at high output.
  • FIG. 5 is an exploded perspective view of a radio frequency filter having a cavity structure according to a second embodiment of the present invention
  • FIG. 6 is a perspective view taken partially along the line AA ′ in the coupling structure of FIG. 2, and according to a second embodiment of the present invention.
  • the structure according to the above shows an example in which a plurality of cavities, for example, six cavity structures are connected in multiple stages.
  • 5 and 6 may be viewed as a structure in which the structures of the first embodiment shown in FIGS. 1 to 4 are arranged in two rows of three each in sequence.
  • the lower case 22 protrudes upward toward the inside of each cavity at the center of the position corresponding to the plurality of cavities of the lower surface thereof.
  • the inside of the case is empty, and a plurality of protrusions 222 having a pocket shape, the entrance of which is directed to the outside of the entire case, is formed seamlessly with the rest of the portion to serve as a resonance element.
  • the lower case 22 having a plurality of protrusions 222 is formed by one press molding using a base material in the form of a plate.
  • a coupling window 224 which is a connection passage structure, is formed between the cavity structures having a sequential connection structure with each other.
  • the coupling window 224 may be formed in a shape in which a predetermined portion is removed at a predetermined size at a portion corresponding to partition walls between the cavities.
  • the upper case 12 has at least one or more curved surfaces protruding upward and downward in a closed loop shape (for example, along a circular shape) at portions corresponding to the plurality of protrusions 222 of the lower case 22, respectively.
  • a number of corrugated structures 122 are formed, which are used for frequency tuning.
  • the upper case 12 having a plurality of corrugation structure 122 is also formed by one press molding.
  • the upper case 12 is formed with a conductive pin injection hole 1222 of a fine size at a position corresponding to each of the plurality of protrusions 222 of the lower case 22, which is the upper case during the frequency tuning operation It is used for conductive pin injection to short between each of the protrusions 222 of the 12 and the lower case 22.
  • the frequency tuning method it is possible to use a method of sequentially performing frequency tuning operations individually for each resonant element (ie, protrusion) of each cavity structure.
  • the cavity structure currently being tuned In addition to the rest of the cavity structure, the resonator element needs to be electrically shorted. Accordingly, in the present invention, by injecting the conductive pins through the plurality of conductive pin injection holes 1222, the cavity (protrusion) having the corresponding cavity structure can be shortened.
  • the input terminal 52 and the output terminal 54 of the corresponding radio frequency filter are attached through holes formed in the side of the lower case 22 so as to be connected to the input terminal and the output terminal cavity structures, respectively. Is shown.
  • FIG. 7 is an exploded perspective view of a radio frequency filter having a cavity structure according to a third embodiment of the present invention
  • FIG. 8 is a cutaway perspective view taken along the line AA ′ of the coupling structure of FIG. 7.
  • the structure according to the third embodiment of the present invention is similar to the structure of the first embodiment shown in FIGS. 1 to 4 in overall appearance, but the upper case 14 is a whole filter.
  • the upper surface and the side surface are formed to form a pocket shape, and the lower case 24 is illustrated as forming only the surface corresponding to the lower surface in the entire filter structure.
  • the protrusion 242 is formed on the lower case 24, and the corrugation structure 142 is formed on the upper case 14.
  • the 7 and 8 may be regarded as a structure in which an interface (bonding surface) between the upper case 14 and the lower case 24 is set differently as compared with the structure of the first embodiment.
  • this interface may be appropriately set at any position on the side in the overall structure of the radio frequency filter, the upper case 14 and the lower case 24 may be formed accordingly.
  • FIG. 9 is an exploded perspective view of a radio frequency filter having a cavity structure according to a fourth embodiment of the present invention
  • FIG. 10 is a combined perspective view of FIG. 9,
  • FIG. 11 is a partially cutaway perspective view of FIG. 10.
  • the structure according to the fourth embodiment of the present invention shows an example in which a plurality of cavities, for example, six cavity structures are connected in multiple stages.
  • 9 to 11 can be viewed as a structure in which the structures of the third embodiment shown in FIGS. 7 and 9 are sequentially arranged in two rows of three.
  • a plurality of protrusions 262 corresponding to a plurality of cavity structures are formed in the lower case 26 having a plate shape as a whole, respectively.
  • a corrugated structure 162 is formed at portions corresponding to the plurality of protrusions 262 of the lower case 26, respectively.
  • a coupling window 264 which is a connection passage structure is formed between the cavity structures having a sequential connection structure with each other.
  • the upper case 16 has conductive pin injection holes 1622 respectively formed at positions corresponding to the plurality of protrusions 262 of the lower case 26.
  • a radio frequency filter having a cavity structure may be configured, and in the present invention, there may be various embodiments or modifications.
  • the pleat structure is formed on the upper case, it is possible to manufacture a filter with almost no processing tolerance by a precise process, or in the case of a filter that does not require precise frequency tuning
  • the structure may be omitted.
  • the filter structure having a plurality of cavities as in the embodiment shown in FIG. 5 and the like, for injecting conductive pins for shorting both of them to a position corresponding to protrusions of the lower case in the upper case for frequency tuning operations.
  • conductive pins for shorting both of them to a position corresponding to protrusions of the lower case in the upper case for frequency tuning operations.
  • the upper portion of the protrusion of the lower case may have a structure for forming a hole for this purpose.
  • a pleat similar to the tuning structure for frequency tuning is located at a position corresponding to the coupling window of the lower case in the upper case.
  • the structure which further forms a structure and performs coupling tuning can be employ
  • the upper case and the lower case have been described as being made of aluminum or magnesium, but may be made of various materials.
  • the upper case and the lower case may be formed of the same material.
  • the upper case and the lower case may be formed of different materials.
  • the upper case when the upper case is configured in the form of a thin plate, the upper case may be made of a plastic material.
  • the upper case or the lower case may be implemented with a plastic material.
  • the corrugation structure formed in the upper case is formed at a position corresponding to the protrusion of the lower case, and is described as being formed at the center portion on the plane, for example, but as shown in FIG.
  • the corrugation structure 104 may be configured to be formed at a planar edge portion. That is, it can be seen that the size of the circular trajectory represented by the corrugated structure 104 shown in FIG. 12 is larger than that of other embodiments.
  • the corrugated structure is formed in the upper case, but in addition, as shown in FIG.
  • a jabara-shaped pleat (a barbar shape) is formed on an enclosure surface facing the front end surface in the width direction of the protrusion serving as a resonance element of the lower case, that is, a side surface of the entire filter structure.
  • the structures giving 206 and 106 can also be adopted.
  • the upper case and the lower case of the present invention has been described as being formed by the press molding method, but in addition to the lower case is implemented in the same manner as the conventional, the wrinkle structure according to the embodiment of the present invention Having only the upper case having a characteristic may also be advantageous in miniaturization and light weight of the product.
  • a protruding member 1108 of a suitable shape may be further formed at a portion where the corrugation structure is formed in the upper case.
  • the protruding member 1108 may be simultaneously formed during press molding of the upper case, or may be separately manufactured and subsequently attached by laser welding or the like.
  • the protruding member 1108 is to allow the protruding member 1108 to be pulled by connecting a separate loop or the like directly or to a locking structure such as a hole that may be formed in the protruding member 1108.
  • FIG. 16 is a perspective view of an upper case (ie, a second case) serving as a cover of a radio frequency filter having a cavity structure according to a fifth embodiment of the present invention
  • FIG. 17 is a cross-sectional view taken along line AA ′ of FIG. 16.
  • the illustration of the lower case is omitted for convenience of description.
  • the fifth embodiment illustrated in FIGS. 16 and 17 has a structure in which six cavity structures are sequentially connected in two rows of three, for example, like the second embodiment illustrated in FIG. 5 and the like.
  • the upper case 11 shows a structure corresponding thereto.
  • the lower case not shown may have the same structure as that of the second embodiment shown in FIG.
  • the upper case 11 may be coupled to the lower case by screw coupling.
  • a plurality of screw holes (not shown) for screw coupling may be formed in place of the upper case 11.
  • a plurality of resonances are formed or installed in the lower case.
  • a plurality of corrugation structures 112 are formed in which curved surfaces projecting upward and downward are formed at least once in a closed loop shape (for example, along a circle). It is formed and used for frequency tuning.
  • the corrugated structure 112 has a quadrangular curved structure, in contrast to the triangular curved structure in which the lateral shape of the curved surface protruding up and down in other embodiments.
  • a plurality of grooves 112a and 112b which are generally circular are alternately formed on the upper and lower surfaces of the upper case 11 alternately.
  • the upper case 11 may be manufactured while simultaneously forming the corrugated structure 112 by one press molding.
  • the corrugated structure 112 may be more efficient to form and form the grooves 112a and 112b after cutting the upper case 11 in the form of a flat plate. It may be.
  • At least one recessed portion 114 having a form recessed toward the inner hollow side may be provided near the corrugated structure 112 of the upper case 11. have.
  • the recessed portion 114 is for assisted or additional frequency tuning, and in the assisted frequency tuning operation, the recessed portion 114 may be subjected to a rudder angle or a press by a pin 502 of an external rudder equipment on the recessed portion 114.
  • the dot pin structure 1142 is formed by this. As a result, the dot pin structure 1142 makes auxiliary frequency tuning work by narrowing the distance between the bottom surface of the recessed portion 114 and the resonance element 21 (as well as by changing the volume of the internal hollow). do.
  • the radio frequency filter 1 which is a frequency tuning object, may be configured to include the steering gear 5 having the steering pins 502. It is placed on the shelf.
  • the rudder angle machine 5 can be configured with a conventional dot pin marking machine.
  • the operating characteristic of the radio frequency filter 1 is measured by the measurement equipment 2 for this purpose, the measurement equipment 2 provides the radio frequency filter 1 with an input signal of a preset frequency and receives the output of the radio frequency. It is connected with the filter (1).
  • the operating characteristic of the radio frequency filter 1 measured by the measuring equipment 2 is provided to the control equipment 3 which can be implemented by a PC or the like.
  • the control equipment 3 monitors the operating characteristics of the radio frequency filter 1 and controls the operation of the steering angle equipment 5 until the filtering characteristics are optimized or satisfies the reference value, so that the steering angle equipment 5 is An appropriate number and shape of dot pin structures 1142 are formed on the recessed surface of the uneven structure 402 of the radio frequency filter 1.
  • a plurality of dot pin structures 1142 may be formed in the recessed portion 114.
  • variety of the recessed part, etc. are set suitably so that unwanted deformation etc. may not generate
  • a dot pin structure 1142 showing a different variable amount can be formed.
  • the more detailed structure of such a recessed part 114 can be designed suitably according to the characteristic, conditions, etc. which are required for the corresponding radio frequency filter 1 to design.
  • FIG. 19 is a perspective view of an upper case of a radio frequency filter having a cavity structure according to a sixth embodiment of the present invention
  • FIG. 20 is a fragmentary sectional view taken along the line AA ′ of FIG. 19, and is shown in FIG. 19 and FIG. 20.
  • the lower case is omitted for convenience of description.
  • the lower case not shown may have a structure similar to that of the second embodiment shown in FIG. 5 and the like, and in addition, as well as the conventional and conventional structures, the lower case may have a structure in which a resonant element manufactured separately is installed. It may be.
  • the upper case 13 serving as a cover in the radio frequency filter according to the sixth embodiment of the present invention, like other embodiments, a plurality of resonances formed or installed in the lower case
  • a corrugation structure 132 is formed, which, unlike other embodiments, is formed on a lower surface of the upper case 13 in the form of a plate. It consists of forming a plurality of grooves 132a, 132b in a closed loop shape (e.g., circular) as a whole at the top surface without applying deformation.
  • FIGS. 19 and 20 is a plurality of grooves that are circular, because when pressing the corrugated structure 132, a somewhat stronger pressing pressure is required in comparison with the other embodiments when the frequency tuning operation is pressed. At least one or more additional connection grooves 132c may be further formed to connect between the 132a and 132b.
  • the upper case 13 may be manufactured while simultaneously forming the corrugated structure 132 by one press molding.
  • the upper case 13 may be manufactured by cutting or the like.
  • the grooves 132a, 132b, and 132c may be formed and manufactured.
  • FIG. 21 is a perspective view of an upper case of a radio frequency filter having a cavity structure according to a seventh embodiment of the present invention
  • FIG. 22 is a cross-sectional view taken along the line AA ′ when the pressing portion of FIG. 21 is pressed in the direction of an arrow.
  • the illustration of the lower case is omitted.
  • the upper case 15 is not provided with a pleat structure configured in other embodiments, and the seventh embodiment of the present invention.
  • the pressing portions 152 having a predetermined shape are formed at portions corresponding to the plurality of resonating elements 21 (or protrusions) respectively formed or installed in the lower case.
  • the pressing portion 152 is formed in the overall shape by the majority of the outline is formed by at least one through slot (152a, 152b). At this time, at least one connection point (a, b) of the outline (where the through slot is not formed) is connected to another portion of the upper case, thereby supporting the pressing portion 152. That is, the pressing portion 152 is surrounded by the through slots 152a and 152b and the connection points a and b.
  • the pressing portion 152 is formed in a circular shape having a double structure as a whole, and three circular arc-shaped through slots represented by reference numeral 152a have one circle as a whole with a connection point a therebetween.
  • the three arc-shaped through slots represented by reference numeral 152b form a circle as a whole with the connection point b therebetween.
  • the pressing part may have a structure of forming one circle instead of a double circle, or a circle of triple structure.
  • the pressing portion 152 when the pressing portion 152 is pressed during the frequency tuning operation, as shown in FIG. 22, the pressing portion 152 is lowered by the tensioning and bending of the connection points a and b. It is pushed toward the resonance element 21 of the, in this manner, the frequency tuning operation is performed by adjusting the distance between the pressing portion 152 and the resonance element 21.
  • the radio signal may leak slightly through the through slot, but in a device in which the signal leakage is not sensitive, a radio frequency filter having such a structure may be used. Employment can be fully considered.
  • FIG. 23 is a perspective view of an upper case of a radio frequency filter having a cavity structure according to an eighth embodiment of the present invention
  • FIG. 24 is a cross-sectional view taken along the line AA ′ when the pressing part of FIG. 23 is pressed in an arrow direction.
  • a radio frequency filter according to an eighth embodiment of the present invention includes a pressing portion implemented on the upper case 17 in a similar principle to the seventh embodiment of FIGS. 21 and 22. 172, but the overall shape of the pressing portion 172 is different from the seventh embodiment in the eighth embodiment.
  • the pressing portion 172 is formed in the overall shape by forming most of the outline by at least one through slot 172a and 17b as in the seventh embodiment. .
  • at least one connection point (a, b) of the outline is connected to the other portion of the upper case 17, thereby supporting the pressing portion 172.
  • the pressing portion 172 may be in the form of a long rod as a whole, the connection point (a, b) may be formed at both ends of the rod shape.
  • connection points a and b are stretched and bent, and the center of the pressing portion 172 in the form of a rod is shown.
  • the portion is bent toward the resonance element 21 side of the lower case to play a role of frequency tuning.
  • FIG. 25 is a perspective view illustrating an upper case of a radio frequency filter having a cavity structure according to a ninth embodiment of the present invention
  • FIG. 26 is a cross-sectional view taken along line A-A 'when the pressing portion of FIG. 25 is pressed.
  • the radio frequency filter according to the ninth embodiment of the present invention is implemented on the upper case 19 in a similar principle to the seventh and eighth embodiments disclosed in FIGS. 21 to 24.
  • the pressing portion 192 is provided, but in the ninth embodiment, the overall shape of the pressing portion 192 is different from other embodiments.
  • the pressing portion 192 has an outline formed by at least one through slot 192a, thereby forming a 'c' shape as a whole. At this time, the pressing portion 192 is connected to the other portion of the upper case 19 through the connection point (a) in which the through slot 192a is not formed in the outline.
  • connection point a is stretched and bent, and the pressing portion 192 having a 'c' shape is formed.
  • One end is pushed down to the resonance element 21 side of the lower case to play a frequency tuning role.
  • the pressing portions 192 are slightly out of the center of the position facing the upper end of the resonating element 21 in the upper case 19 to form one or two resonant elements 21. Although shown, the formation position and the number of the pressing portion 192 may be appropriately set according to the characteristics of the filter.
  • the upper case 19 further includes a coupling tuning pressing portion 194 having a structure similar to the pressing portion 192.
  • the pressing portion 194 is installed at a portion corresponding to the coupling window, which is a passage structure between the respective cavities in the lower case.
  • the coupling tuning pressing part 194 plays a role of coupling tuning in a manner similar to the tuning method for frequency tuning.
  • fifth to ninth embodiments of the present invention may be formed, and at least some components of the embodiments may be formed in other embodiments including the first to fourth embodiments. It can be applied as well.
  • the recessed portion as shown in FIG. 16 may be applied in other embodiments as well.
  • the pressing structure for coupling tuning as shown in FIG. 25 may be applied to other embodiments as well, and conversely, the pressing structure of other embodiments may be applied for coupling tuning.
  • the structure according to the above embodiments may be differently applied to each cavity in the radio frequency filter in which the cavity structure is connected in multiple stages.

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  • Manufacturing & Machinery (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

La présente invention se rapporte à un filtre de fréquence radio ayant une structure de cavité, comprenant : un contenant qui possède une partie intérieure creuse et une cavité qui est coupée de l'extérieur, et un élément de résonance qui est placé dans la partie intérieure creuse du contenant, le contenant ayant une structure gondolée pour ajuster les intervalles entre une surface d'extrémité avant longitudinale de l'élément de résonance et les surfaces intérieures du contenant faisant face à la surface d'extrémité avant longitudinale à l'aide de la pression extérieure. Ainsi, l'invention peut être encore plus miniaturisée et est légère, et la conception de l'invention permet un réglage de fréquence sans employer de structure de couplage d'une vis de réglage et d'un écrou de fixation, ce qui permet d'obtenir une structure pratique et simplifiée.
PCT/KR2013/001518 2012-02-27 2013-02-26 Filtre de fréquence radio ayant une structure de cavité WO2013129817A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE1651093A SE540506C2 (en) 2012-02-27 2013-02-26 Radio frequency filter having cavity structure
CN201380011156.3A CN104126247B (zh) 2012-02-27 2013-02-26 具有腔结构的射频滤波器
SE1451093A SE539666C2 (en) 2012-02-27 2013-02-26 Radio frequency filter having cavity structure
JP2014556492A JP5883952B2 (ja) 2012-02-27 2013-02-26 キャビティ構造を有する無線周波数フィルタ
US14/333,254 US9716301B2 (en) 2012-02-27 2014-07-16 Radio frequency filter having a hollow box with a wrinkle structure and including a resonance element disposed therein which is short-circuited to the box by a pin
US15/183,148 US10090572B1 (en) 2012-02-27 2016-06-15 Radio frequency filter having a hollow box with a resonance element disposed therein and a depression with dot peen structures therein

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2012-0019722 2012-02-27
KR20120019722 2012-02-27
KR1020130006945A KR101869757B1 (ko) 2012-02-27 2013-01-22 캐비티 구조를 가진 무선 주파수 필터
KR10-2013-0006945 2013-01-22

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14/333,254 Continuation US9716301B2 (en) 2012-02-27 2014-07-16 Radio frequency filter having a hollow box with a wrinkle structure and including a resonance element disposed therein which is short-circuited to the box by a pin

Publications (1)

Publication Number Publication Date
WO2013129817A1 true WO2013129817A1 (fr) 2013-09-06

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CN113310674A (zh) * 2021-04-08 2021-08-27 大富科技(安徽)股份有限公司 调试装置及设备
CN114865266A (zh) * 2022-05-18 2022-08-05 天津市哈德布莱特科技发展有限公司 一种具有螺旋形内导体的同轴谐振腔及其制造方法

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US6198363B1 (en) * 1997-12-15 2001-03-06 Adc Telecommunications Oy Filter and tuning element
US20070194865A1 (en) * 2004-03-04 2007-08-23 Wilhelm Weitzenberger High frequency filter
JP4191198B2 (ja) * 2006-02-09 2008-12-03 Ｎｅｃエンジニアリング株式会社 フィルタ
US20090237185A1 (en) * 2008-03-04 2009-09-24 Nokia Siemens Networks Oy Variable radio frequency band filter
KR20110013956A (ko) * 2009-08-04 2011-02-10 주식회사 알림테크놀러지 무선 주파수 필터의 커버 결합 방법 및 그 방법에 의한 무선 주파수 필터
JP4737291B2 (ja) * 2006-08-31 2011-07-27 パナソニック株式会社 フィルタ装置とその製造方法

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Publication number Priority date Publication date Assignee Title
US6198363B1 (en) * 1997-12-15 2001-03-06 Adc Telecommunications Oy Filter and tuning element
US20070194865A1 (en) * 2004-03-04 2007-08-23 Wilhelm Weitzenberger High frequency filter
JP4191198B2 (ja) * 2006-02-09 2008-12-03 Ｎｅｃエンジニアリング株式会社 フィルタ
JP4737291B2 (ja) * 2006-08-31 2011-07-27 パナソニック株式会社 フィルタ装置とその製造方法
US20090237185A1 (en) * 2008-03-04 2009-09-24 Nokia Siemens Networks Oy Variable radio frequency band filter
KR20110013956A (ko) * 2009-08-04 2011-02-10 주식회사 알림테크놀러지 무선 주파수 필터의 커버 결합 방법 및 그 방법에 의한 무선 주파수 필터

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113310674A (zh) * 2021-04-08 2021-08-27 大富科技(安徽)股份有限公司 调试装置及设备
CN114865266A (zh) * 2022-05-18 2022-08-05 天津市哈德布莱特科技发展有限公司 一种具有螺旋形内导体的同轴谐振腔及其制造方法
CN114865266B (zh) * 2022-05-18 2023-06-02 天津市哈德布莱特科技发展有限公司 一种具有螺旋形内导体的同轴谐振腔及其制造方法

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