CN107615572A - Cavity body filter and radio frequency remote equipment, signal receiving/transmission device and tower amplifier with the cavity body filter - Google Patents
Cavity body filter and radio frequency remote equipment, signal receiving/transmission device and tower amplifier with the cavity body filter Download PDFInfo
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- CN107615572A CN107615572A CN201480084409.4A CN201480084409A CN107615572A CN 107615572 A CN107615572 A CN 107615572A CN 201480084409 A CN201480084409 A CN 201480084409A CN 107615572 A CN107615572 A CN 107615572A
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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
- H01P1/207—Hollow waveguide filters
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Abstract
The embodiment of the invention discloses a kind of cavity body filter and with the cavity body filter radio frequency remote equipment, signal receiving/transmission device and tower amplifier, the cavity body filter includes cavity and cover plate, and it is arranged on the connector on cavity or cover plate, cover plate capping cavity forms the resonator of several cascades, and the resonator of several cascades is spaced apart by the isolation bar being arranged on cavity or cover plate；The resonant column in solid cylinder shape is provided with least two resonators, one end of resonant column and the bottom wall of cover plate or cavity are integrally formed, cavity body filter also includes connector, resonant column is electrically connected by connector with connector, connector includes integrally formed tap and capacitive load disk, tap is connected with connector, and capacitive load disk is detachably connected on the end face of the resonant column other end.Cavity body filter of the present invention has relatively low manufacturing cost and can effectively avoid the generation of noise.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of filters, in particular to a cavity filter, and radio frequency remote equipment, a signal receiving and transmitting device and a tower top amplifier with the cavity filter.
[ background of the invention ]
The cavity filter is widely applied to the field of communication as a frequency selection device, in particular to the field of radio frequency communication. In a base station, a filter is used to select a communication signal and filter out clutter or interference signals outside the frequency of the communication signal.
Referring to fig. 1, fig. 1 is a schematic diagram of a partial structure of a cavity filter in the prior art. The cavity filter comprises a cavity 11, a cover plate 12, a resonance rod 13, a tuning screw 14, a tap 15 and a connector 16. The cover plate 12 covers the cavity 11 to form a resonant cavity, the resonant rod 13 is cylindrical with one end open and the other end closed, and the closed end is fixed on the mounting boss at the bottom of the cavity 11 by screws. The open end of the resonance rod 13 is provided with a capacitor disc projecting radially outwards. The tuning screw 14 is in threaded connection with the cover plate 12, the tuning screw 14 extends into the opening of the resonant rod 13, and the radio frequency parameters of the cavity filter are adjusted by setting the length change of the tuning screw 14 extending into the resonant rod 13. A connector 16 is provided on the side wall of the cavity 11, and the tap 15 is substantially L-shaped, and has one end welded to the resonance rod 13 and the other end electrically connected to the connector 16.
During the research and practice of the prior art, the inventor of the present invention found that in the prior art, the resonant rod is generally formed by punching and then is mounted to the bottom of the cavity by screws, and the assembly error is easily caused by two processes including machining and assembly. In addition, the capacitor disc is formed by punching and forming with the resonance rod integrally, when the market demand is greatly changed or a large error occurs in manufacturing and the tuning screw rod is not enough to adjust the radio frequency parameter of the cavity filter to a normal range, the resonance rod can only be replaced by a new resonance rod, or the old resonance rod is detached and a part of the capacitor disc is cut off and then installed in the cavity. In addition, the tap is connected with the resonance rod 13 by welding, and electromagnetic waves are refracted in the welding flux in the process of being transmitted into the resonance rod from the tap, so that electromagnetic waves with different frequencies from the original input signals are generated, namely noise is generated.
Therefore, there is a need to provide a new solution to the above problems.
[ summary of the invention ]
In order to solve the problems of high manufacturing cost of a cavity filter and noise generated when electromagnetic waves enter a resonance rod in the prior art, the embodiment of the invention provides the cavity filter, and radio frequency remote equipment, a signal receiving and transmitting device and a tower top amplifier with the cavity filter.
The technical solution adopted by the embodiments of the present invention to solve the above technical problems is to provide a cavity filter, which includes a cavity, a cover plate, and a connector disposed on the cavity or the cover plate, wherein the cover plate covers the cavity to form a plurality of cascaded resonant cavities, and the plurality of cascaded resonant cavities are separated by an isolation rib disposed on the cavity or the cover plate; a solid cylindrical resonance column is arranged in the at least two resonant cavities, and one end of the resonance column is integrally formed with the cover plate or the bottom wall of the cavity; the cavity filter also comprises a connecting piece, and the resonant column is electrically connected with the connector through the connecting piece; the connecting piece includes integrated into one piece's tap and electric capacity loading dish, and the tap is connected with the connector, and electric capacity loading dish can be dismantled and connect the terminal surface at the resonance post other end.
The resonant cavity comprises a first cavity for receiving electromagnetic signals and a tail cavity for transmitting the electromagnetic signals, and the first cavity and the tail cavity are provided with solid cylindrical resonant columns.
And the capacitor loading disc is fixed on the end face of the end, opposite to the bottom wall of the cavity, of the resonant column by using a fastening screw.
Wherein the outer surface of the fastening screw is provided with a silver coating.
The cover plate is provided with a tuning screw rod extending into the resonant cavity, and the depth of the tuning screw rod extending into the resonant cavity is adjustable.
Wherein the part of the tuning screw rod extending into the resonant cavity is positioned outside the edge part of the capacitance loading disc.
The thicknesses of the capacitor loading disc and the tap are 1-2 mm.
Wherein the width of the tap is 2-5 mm.
Another technical solution adopted by the embodiments of the present invention to solve the above technical problems is to provide a radio remote device, which includes a radio frequency transceiver module, a power amplifier module, and the cavity filter, where the radio frequency transceiver module is connected to the power amplifier module, and the power amplifier module is connected to the cavity filter.
Another technical solution adopted by an embodiment of the present invention to solve the above technical problem is to provide a signal transceiver, including: the cavity filter is connected with the receiving antenna and filters the received signal; the radio frequency low noise amplifier is connected with the signal output end of the cavity filter; the circulator is connected with the signal output end of the radio frequency low noise amplifier; the combiner is connected with the circulator; the input end of the radio frequency power amplifier is connected with the signal output end of the combiner, and the output end of the radio frequency power amplifier is connected with the cavity filter; and the transmitting antenna receives the output signal of the cavity filter and transmits the signal.
Another technical solution adopted by the embodiment of the present invention to solve the above technical problem is to provide a tower top amplifier, which includes a low noise amplifier and a band pass filter, where the band pass filter is the cavity filter.
Compared with the prior art, the cavity filter has the advantages that the resonant column is in the solid column shape and is integrally formed with the bottom wall of the cavity, so that the assembling procedure of the resonant column is omitted, and the assembling error is avoided. Then, the capacitor loading disc is detachably connected with the resonant column, and when the tuning screw is not enough to adjust the radio frequency parameters of the cavity filter to a normal range, the capacitor loading disc can be replaced without replacing the whole resonant column or cutting off part of the capacitor disc as before. Finally, the tap and the capacitor loading disc are integrally formed, the capacitor loading disc is detachably connected with the resonance column, and the electromagnetic waves cannot pass through impurities like welding flux in the process of being transmitted to the resonance column from the tap, so that noise is avoided.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts:
FIG. 1 is a cross-sectional view of a prior art cavity filter;
fig. 2 is a sectional structural view of a cavity filter according to a first embodiment of the present invention;
FIG. 3 is a perspective view of the cavity filter of FIG. 2 with the cover plate removed;
fig. 4 is a sectional structural view of a cavity filter according to a second embodiment of the present invention;
fig. 5 is a structural diagram of a remote radio device according to an embodiment of the present invention;
FIG. 6 is a block diagram of a signal transceiver device of the present invention;
fig. 7 is a block diagram of the tower top amplifier of the present invention.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The cavity filter comprises a cavity, a cover plate and a connector arranged on the cavity or the cover plate, wherein the cover plate covers the cavity to form a plurality of cascaded resonant cavities, and the plurality of cascaded resonant cavities are separated by isolating ribs arranged on the cavity or the cover plate; a solid cylindrical resonance column is arranged in the at least two resonant cavities, and one end of the resonance column is integrally formed with the cover plate or the bottom wall of the cavity; the cavity filter also comprises a connecting piece, and the resonant column is electrically connected with the connector through the connecting piece; the connecting piece includes integrated into one piece's tap and electric capacity loading dish, and the tap is connected with the connector, and electric capacity loading dish can be dismantled and connect the terminal surface at the resonance post other end. By adopting the cavity filter, firstly, the resonance column is in a solid column shape and is integrally formed with the bottom wall of the cavity, so that the assembly process of the resonance column is omitted, and the assembly error is avoided. Then, the capacitor loading disc is detachably connected with the resonant column, and when the tuning screw is not enough to adjust the radio frequency parameters of the cavity filter to a normal range, the capacitor loading disc can be replaced without replacing the whole resonant column or cutting off part of the capacitor disc as before. Finally, the tap and the capacitor loading disc are integrally formed, the capacitor loading disc is detachably connected with the resonance column, and the electromagnetic waves cannot pass through impurities like welding flux in the process of being transmitted to the resonance column from the tap, so that noise is avoided.
Referring to fig. 2 and 3, the cavity filter according to the first embodiment of the present invention includes a cavity 21, a cover plate 22, a connector 24, a tuning screw 25, a resonant post 26, a fastening screw 27, and a connector (not shown).
The chamber 21 includes a bottom wall 211 and a sidewall 212 extending perpendicularly from the bottom wall 211 and surrounding the edge of the bottom wall 211. The cover plate 22 covers the cavity 21 to form a plurality of cascaded resonant cavities (not labeled); the plurality of cascaded resonant cavities are separated by isolation ribs (not shown) arranged on the cavity 21 or the cover plate 22; a solid cylindrical resonance column 26 is arranged in at least two resonant cavities. Specifically, the resonant cavity comprises a head cavity for receiving electromagnetic signals and a tail cavity for transmitting electromagnetic signals, and the head cavity and the tail cavity are provided with a resonant column 26 in a solid column shape.
A resonant column 26, a fastening screw 27 and a connector are arranged in the resonant cavity. In this embodiment, the resonant column 26 is a solid cylinder, one end of which is integrally formed with the bottom wall 211 of the cavity 21, and the resonant column 26 is electrically connected to the connector 24 through a connecting member. The resonant column 26 is provided in the form of a solid cylinder, which facilitates the fixing of the capacitive loading plate 28 to the resonant column 26. The resonant column 26 is integrally formed with the cavity 21, so that the processing and assembling procedures of the resonant column 26 are omitted, and the manufacturing cost of the cavity filter is reduced.
The connector 24 is disposed on the cavity 21 or the cover plate 22. In this embodiment, the connector 24 is disposed on the sidewall 212 of the cavity 21. Specifically, the sidewall 212 is provided with a mounting hole (not labeled) for communicating the resonant cavity and the outside, the connector 24 is fixed on the sidewall 212 through the mounting hole, the connector 24 partially extends into the resonant cavity to be electrically connected with the connecting member, and meanwhile, the jack (not labeled) of the connector 24 can be observed from the outer surface of the sidewall 212 of the cavity 21, i.e., the outside of the cavity filter, so as to realize the filtering function of the cavity filter after the corresponding plug is inserted into the jack.
The connector is a structural member formed by integrally molding the tap 23 and the capacitor loading plate 28, and the resonant column 26 is electrically connected with the connector through the connector. A capacitive loading plate 28 is removably attached to the end face of the other end of the resonant post 26. In the present embodiment, the capacitor loading plate 28 is fixed to the end surface of the resonant column 26 at the end opposite to the bottom wall 211 of the cavity 21 by a fastening screw 27. Specifically, a through hole (not shown) is provided on the capacitive loading plate 28, a threaded hole (not shown) is provided at a corresponding position of the resonant post 26, and a fastening screw 27 is inserted into the through hole of the capacitive loading plate 28 and then screwed into the threaded hole of the resonant post 26 to connect the tap 23 to the resonant post 26. Preferably, the outer surface of the fastening screw 27 is provided with a silver coating. For cost control and strength protection, the fastening screw 27 is usually made of steel, but the steel has poor conductivity, and the silver coating can reduce the loss of electromagnetic signal transmission.
In other embodiments, capacitive loading plate 28 and resonant post 26 may be removably coupled by interference fit, threaded connection, or the like. The capacitive loading plate 28 connected to the resonant column 26 forms a capacitance with the cover plate 21.
In the present invention, one end of the tap 23 and the capacitor loading plate 28 are integrally formed. Because of the integral design of the two, the thickness is only equivalent to the thickness of one element manufactured in the prior art. Preferably, the thickness of the capacitive loading plate 28 and the tap 23 is 1-2 mm (millimeter), and the width of the tap 23 is 2-3 mm. Further, the capacitor loading disc 28 and the tap 23 are integrally formed, and the capacitor loading disc and the tap are small in size and easy to install in the cavity 21.
The other end of the tap 23 is electrically connected to the connector 24. The connection of the tap 23 to the connector 24 may be by soldering or by other removable means.
The tuning screw 25 is disposed on the cover plate 22 and partially extends into the resonant cavity, in other words, the tuning screw 25 passes through the cover plate 22 and is partially inserted into the resonant cavity. The radio frequency parameters of the cavity filter are adjusted by setting the length change of the tuning screw 25 extending into the resonant cavity.
In this embodiment, since the resonant column 26 is solid, if the tuning screw 25 is located right above the capacitor loading disc 28, the distance that the tuning screw 25 penetrates into the resonant cavity is limited by the capacitor loading disc 28, which greatly limits the parameter adjustment range of the cavity filter; preferably, the part of the tuning screw 25 extending into the resonant cavity is positioned outside the edge part of the capacitor loading disc, so as to increase the parameter adjusting range of the cavity filter by the tuning screw 25; in other words, the tuning screw 25 is offset from the tap 23 in a direction perpendicular to the axis of the tuning screw 25. Preferably, the distance between the tuning screw 25 and the tap 23 in the direction perpendicular to the axis of the tuning screw 25 is 1.5-2 mm.
Referring to fig. 4, the cavity filter according to the second embodiment of the present invention includes a cavity 31, a cover plate 32, a connector 34, a tuning screw 35, a resonant post 36, a fastening screw 37, and a connector (not shown).
The cavity 31 includes a bottom wall and a side wall extending vertically from the bottom wall and surrounding the edge of the bottom wall. The cover plate 32 covers the cavity 31 to form a plurality of cascaded resonant cavities (not labeled); the plurality of cascaded resonant cavities are separated by isolating ribs (not shown) arranged on the cavity 31 or the cover plate 32; a solid cylindrical resonance column 36 is arranged in at least two resonant cavities. Specifically, the resonant cavity includes a head cavity for receiving electromagnetic signals and a tail cavity for transmitting electromagnetic signals, and the head cavity and the tail cavity are provided with a solid cylindrical resonant column 36.
A resonant post 36, a fastening screw 37 and a connector are arranged in the resonant cavity. In this embodiment, the resonant column 36 is a solid cylinder, one end of which is integrally formed with the cover, and the resonant column 36 is electrically connected to the connector 34 through a connecting member. The resonant post 36 is provided in the form of a solid cylinder to facilitate securing the capacitive load plate 38 to the resonant post 36. The resonant column 36 is integrally formed with the cavity 31, so that the processing and assembling procedures of the resonant column 36 are omitted, and the manufacturing cost of the cavity filter is reduced.
The connector 34 is disposed on the cavity 31 or the cover plate 32. In this embodiment, the connector 34 is disposed on the sidewall of the cavity 31.
The connector is a structural member formed by integrally molding the tap 33 and the capacitor loading plate 38, and the resonant column 36 is electrically connected with the connector through the connector. A capacitive loading plate 38 is removably attached to the end face of the other end of the resonant column 36. In the present embodiment, the capacitor loading plate 38 is fixed to the end surface of the resonant column 36 at the end opposite to the bottom wall of the cavity 31 by a fastening screw 37. Specifically, a through hole (not shown) is formed in the capacitive loading plate 38, a threaded hole (not shown) is formed at a corresponding position of the resonant post 36, and a fastening screw 37 is inserted into the through hole of the capacitive loading plate 38 and then screwed into the threaded hole of the resonant post 36 to connect the tap 33 to the resonant post 36. Preferably, the outer surface of the fastening screw 37 has a silver plating layer.
In the present invention, one end of the tap 33 and the capacitor loading plate 38 are integrally formed. Because of the integral design of the two, the thickness is only equivalent to the thickness of one element manufactured in the prior art. Preferably, the thickness of the capacitive loading plate 38 and the tap 33 is 1-2 mm (millimeters), and the width of the tap 33 is 2-3 mm. Further, the capacitor loading plate 38 and the tap 33 are integrally formed, and the capacitor loading plate and the tap are small in size and easy to install in the cavity 31.
The other end of the tap 33 is electrically connected to the connector 34. The connection of the tap 33 to the connector 34 may be by welding or by other detachable means.
The tuning screw 35 is disposed on the bottom wall of the cavity and partially extends into the cavity, in other words, the tuning screw 35 penetrates through the bottom wall of the cavity and is partially inserted into the cavity. The radio frequency parameters of the cavity filter are adjusted by setting the length change of the tuning screw 35 extending into the resonant cavity.
In this embodiment, since the resonant column 36 is solid, if the tuning screw 35 is located right above the capacitor loading disc 38, the distance that the tuning screw 35 penetrates into the resonant cavity is limited by the capacitor loading disc 38, which greatly limits the parameter adjustment range of the cavity filter; preferably, the part of the tuning screw 35 extending into the resonant cavity is located outside the edge part of the capacitor loading disc, so as to increase the parameter adjusting range of the tuning screw 35 on the cavity filter; in other words, the tuning screw 35 is offset from the tap 33 in a direction perpendicular to the axis of the tuning screw 35. Preferably, the distance between the tuning screw 35 and the tap 33 in the direction perpendicular to the axis of the tuning screw 35 is 1.5-2 mm.
Different from the prior art, by adopting the cavity filter, firstly, the resonance column is in a solid column shape and is integrally formed with the bottom wall of the cavity, so that the assembly process of the resonance column is omitted, and the assembly error is avoided. Then, the capacitor loading disc is detachably connected with the resonant column, and when the tuning screw is not enough to adjust the radio frequency parameters of the cavity filter to a normal range, the capacitor loading disc can be replaced without replacing the whole resonant column or cutting off part of the capacitor disc as before. Finally, the tap and the capacitor loading disc are integrally formed, the capacitor loading disc is detachably connected with the resonance column, and the electromagnetic waves cannot pass through impurities like welding flux in the process of being transmitted to the resonance column from the tap, so that noise is avoided.
The present invention further provides a remote radio device, please refer to fig. 5, where the remote radio device includes a radio transceiver module, a power amplifier module, a cavity filter, and a power supply module. The power supply module is used for supplying power to the radio frequency transceiver module, the power amplification module and the cavity filter; the radio frequency transceiver module is connected with the power amplifier module, and the power amplifier module is connected with the cavity filter. The structure of the cavity filter is as described in detail in the previous embodiments. When the radio frequency remote equipment works in a downlink time slot, transmitting signals from two channels of the radio frequency transceiver module enter the cavity filter through the power amplifier module, the cavity filter completes filtering on the transmitting signals, and then the transmitting signals are transmitted to the antenna port after power synthesis. When the radio frequency remote equipment works in an uplink time slot, signals received from the antenna port enter the power amplifier module after being filtered by the cavity filter, and are output to the receiving channel corresponding to the radio frequency transceiver module after being amplified by the power amplifier module.
The present invention further provides a signal transceiver, please refer to fig. 6, which includes a cavity filter 1, a radio frequency low noise amplifier 2, a radio frequency power amplifier 3, a circulator 4, a receiving antenna 5, a transmitting antenna 6 and a combiner 7. The structure of the cavity filter 1 is as described in detail in the foregoing embodiments. The cavity filter 1 is connected with the receiving antenna 5 and filters the received signal; the radio frequency low noise amplifier 2 is connected with the signal output end of the cavity filter 1; the circulator 4 is connected with the signal output end of the radio frequency low noise amplifier 2; the combiner 7 is connected with the circulator 4; the input end of the radio frequency power amplifier 3 is connected with the signal output end of the combiner 7, and the output end is connected with the cavity filter 1; the transmitting antenna 6 receives the output signal of the cavity filter 1 and transmits the signal.
The present invention further provides a tower top amplifier, please refer to fig. 7, in which the tower top amplifier includes a low noise amplifier and a band pass filter. The structure of the band-pass filter is as described in detail in the foregoing embodiments.
In the above embodiments, only the embodiments of the present invention have been exemplarily described, but those skilled in the art, after reading the present patent application, may make various modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention.
Claims (11)
- A cavity filter is characterized by comprising a cavity, a cover plate and a connector arranged on the cavity or the cover plate, wherein the cover plate covers the cavity to form a plurality of cascaded resonant cavities which are separated by isolation ribs arranged on the cavity or the cover plate;a solid cylindrical resonance column is arranged in at least two of the resonance cavities, and one end of the resonance column is integrally formed with the cover plate or the bottom wall of the cavity;the cavity filter further comprises a connecting piece, and the resonant column is electrically connected with the connector through the connecting piece;the connecting piece comprises a tap and a capacitor loading disc which are integrally formed, the tap is connected with the connector, and the capacitor loading disc is detachably connected to the end face of the other end of the resonance column.
- The cavity filter according to claim 1, wherein the resonant cavity comprises a head cavity for receiving electromagnetic signals and a tail cavity for transmitting electromagnetic signals, and the head cavity and the tail cavity are provided with the resonant pillar in the shape of the solid pillar.
- The cavity filter of claim 2, wherein the capacitive loading plate is fixed to an end face of the resonant post at an end opposite to the bottom wall of the cavity by a fastening screw.
- The cavity filter of claim 3, wherein an outer surface of the fastening screw has a silver plated layer.
- The cavity filter of claim 2, wherein the cover plate is provided with a tuning screw extending into the cavity, and the depth of the tuning screw extending into the cavity is adjustable.
- The cavity filter of claim 5, wherein the portion of the tuning screw that extends into the cavity is beyond the edge portion of the capacitive loaded disk.
- The cavity filter of claim 2, wherein the thickness of the capacitive loading disc and the tap is 1-2 mm.
- The cavity filter of claim 2, wherein the tap has a width of 2-5 mm.
- A radio remote unit, characterized by: the remote radio frequency equipment comprises a radio frequency transceiver module, a power amplifier module and the cavity filter of any one of the items 1 to 8, wherein the radio frequency transceiver module is connected with the power amplifier module, and the power amplifier module is connected with the cavity filter.
- A signal transceiving apparatus, characterized in that: the signal transceiving apparatus includes:the cavity filter according to any one of claims 1 to 8, connected to a receiving antenna, for filtering a received signal;the radio frequency low noise amplifier is connected with the signal output end of the cavity filter;the circulator is connected with the signal output end of the radio frequency low noise amplifier;the combiner is connected with the circulator;the input end of the radio frequency power amplifier is connected with the signal output end of the combiner, and the output end of the radio frequency power amplifier is connected with the cavity filter;and the transmitting antenna is used for receiving the output signal of the cavity filter and transmitting the signal.
- A tower mounted amplifier, comprising: the cavity filter comprises a low noise amplifier and a band-pass filter, wherein the band-pass filter is the cavity filter as claimed in any one of claims 1 to 8.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2014/095532 WO2016106550A1 (en) | 2014-12-30 | 2014-12-30 | Cavity filter, and remote radio device, signal transceiving apparatus, and tower mounted amplifier having cavity filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107615572A true CN107615572A (en) | 2018-01-19 |
| CN107615572B CN107615572B (en) | 2019-11-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480084409.4A Active CN107615572B (en) | 2014-12-30 | 2014-12-30 | Cavity body filter and radio frequency remote equipment, signal receiving/transmission device and tower amplifier |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107615572B (en) |
| WO (1) | WO2016106550A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109219299A (en) * | 2018-10-31 | 2019-01-15 | 重庆山淞信息技术有限公司 | A kind of filter of more filter functions |
| CN115663434A (en) * | 2022-12-29 | 2023-01-31 | 成都联帮微波通信工程有限公司 | Structure of filter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2045560A1 (en) * | 1970-09-15 | 1972-03-16 | Sel | Rectangular waveguide resonator and microwave filter built with such resonators |
| CN203119066U (en) * | 2013-01-21 | 2013-08-07 | 合肥科尚电子科技有限公司 | A filter used in a C-waveband radar system transceiver assembly |
| CN203386875U (en) * | 2013-06-04 | 2014-01-08 | 深圳市大富科技股份有限公司 | A cavity filter |
| CN103855454A (en) * | 2012-11-30 | 2014-06-11 | 深圳光启创新技术有限公司 | Resonant cavity, filter component and electromagnetic wave device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5535560A (en) * | 1978-09-04 | 1980-03-12 | Matsushita Electric Ind Co Ltd | Coaxial type filter |
| JPS57136802A (en) * | 1981-02-17 | 1982-08-24 | Matsushita Electric Ind Co Ltd | Coaxial filter |
| US4491806A (en) * | 1982-10-06 | 1985-01-01 | Motorola, Inc. | Resonant cavity with integrated microphonic suppression means |
| SE513349C2 (en) * | 1998-08-12 | 2000-08-28 | Allgon Ab | cavity resonator |
| CN102881977B (en) * | 2011-07-15 | 2015-02-25 | 凯镭思通讯设备（上海）有限公司 | Single-cavity filter with load coupling plate |
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2014
- 2014-12-30 WO PCT/CN2014/095532 patent/WO2016106550A1/en active Application Filing
- 2014-12-30 CN CN201480084409.4A patent/CN107615572B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2045560A1 (en) * | 1970-09-15 | 1972-03-16 | Sel | Rectangular waveguide resonator and microwave filter built with such resonators |
| CN103855454A (en) * | 2012-11-30 | 2014-06-11 | 深圳光启创新技术有限公司 | Resonant cavity, filter component and electromagnetic wave device |
| CN203119066U (en) * | 2013-01-21 | 2013-08-07 | 合肥科尚电子科技有限公司 | A filter used in a C-waveband radar system transceiver assembly |
| CN203386875U (en) * | 2013-06-04 | 2014-01-08 | 深圳市大富科技股份有限公司 | A cavity filter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109219299A (en) * | 2018-10-31 | 2019-01-15 | 重庆山淞信息技术有限公司 | A kind of filter of more filter functions |
| CN109219299B (en) * | 2018-10-31 | 2023-08-18 | 重庆山淞信息技术有限公司 | Filter with multiple filtering functions |
| CN115663434A (en) * | 2022-12-29 | 2023-01-31 | 成都联帮微波通信工程有限公司 | Structure of filter |
| CN115663434B (en) * | 2022-12-29 | 2023-03-21 | 成都联帮微波通信工程有限公司 | Filter mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107615572B (en) | 2019-11-26 |
| WO2016106550A1 (en) | 2016-07-07 |
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