CN202454695U - Cavity filter - Google Patents

Cavity filter Download PDF

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Publication number
CN202454695U
CN202454695U CN2011205758169U CN201120575816U CN202454695U CN 202454695 U CN202454695 U CN 202454695U CN 2011205758169 U CN2011205758169 U CN 2011205758169U CN 201120575816 U CN201120575816 U CN 201120575816U CN 202454695 U CN202454695 U CN 202454695U
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China
Prior art keywords
rod
connecting rod
cavity
coupled structure
links
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CN2011205758169U
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Chinese (zh)
Inventor
茹志云
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Shenzhen Tatfook Technology Co Ltd
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Shenzhen Tatfook Technology Co Ltd
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Abstract

The utility model discloses a cavity filter which comprises a cavity. The cavity is provided with an input/output port and internally comprises a plurality of resonant cavities, at least one coupling structure coupled with the resonant cavity, and a connecting device, wherein the connecting device comprises a rod body and end parts positioned at the two ends of the rod body; one end of the rod body is connected with the input/output port; and the at least one coupling structure is connected with the rod body of the connecting device. The cavity filter provided by the embodiment of the utility model allows the cavity arrangement to be more flexible, and the cavity space of the cavity filter can be fully utilized.

Description

A kind of cavity body filter
Technical field
The utility model relates to the communications field, is specifically related to a kind of cavity body filter.
Background technology
Filter is widely used in the communications field as a kind of frequency selection device, especially field of radio frequency communication.In the base station that communication system completion signal transmits and receives, filter is used to select signal of communication, clutter or interference signal that the filtering communication signal frequency is outer.
Cavity body filter comprises a plurality of resonant cavitys in cavity and the cavity, is provided with the I/O coupled structure at the I/O end of cavity body filter, and purpose is with external input signal feed-in filter or will derives through the signal of wave filter.In the filters such as duplexer in the cavity body filter or mixer; The receipts of the shared antenna completion of common multiple signals signal/send out; The input/output end port transmission signals of the then shared cavity body filter of multiple signals, input/output port will be provided with a plurality of coupled structures.
With the duplexer in the cavity body filter is example; As shown in Figure 1; Comprise two receipts of accepting or launching a different frequency signals/chamber 111 and 112 in the duplexer of the prior art, the input/output end port 120 of a shared antenna is connected with the connecting rod 130 that is used for the signal transmission on the input/output end port; Two receipts/sending out the chamber passes through input/output end port 120 feed-ins or derivation through the coupled structure 141 and 142 that is connected on the connecting rod with signal separately respectively; Common two coupled structures all are arranged at connecting rod 130 ends, and promptly coupled structure is drawn from the same position of connecting rod, and lead to a receipts/cavity.
In research and practice process to prior art; The inventor of the utility model finds; In cavity body filter, there is very big relation in the cloth chamber of the coupling position of input/output end port and cavity, and coupled structure all is arranged at the port of connecting rod the cloth chamber is restricted; Be unfavorable for the making full use of of cavity space of cavity body filter, be unfavorable for the miniaturization demand for development of cavity body filter.
The utility model content
Unreasonable in order to solve cavity layout of the prior art, the problem that cavity space is not fully utilized, the utility model provides a kind of cavity body filter, can make the cloth chamber more flexible, and cavity space is fully used.
A kind of cavity body filter that the utility model provides; Comprise cavity, said cavity is provided with input/output end port, comprises a plurality of resonant cavitys in the said cavity; Coupled structure that at least one and resonant cavity are coupled and jockey; Said jockey comprises the body of rod and the end that is positioned at body of rod two ends, and an end of the said body of rod connects said input/output end port, and at least one coupled structure links to each other with the body of rod of said jockey.
Preferably, the said body of rod is a connecting rod, and said connecting rod comprises the connecting rod body of rod and the end that is positioned at body of rod two ends; At least one coupled structure is connected on the said connecting rod body of rod.
Preferably, the described body of rod comprises the connecting rod that links to each other with input/output end port, the structure capacitive that links to each other with connecting rod one end; At least one coupled structure is connected on the body of rod of said connecting rod or on the body of rod of said structure capacitive or on the connecting portion of said connecting rod and said structure capacitive.
Preferably, the said body of rod comprises the connecting rod that links to each other with input/output end port, the structure capacitive that links to each other with connecting rod one end, the low pass filter that links to each other with said structure capacitive one end; Between that at least one coupled structure is connected said connecting rod and end that input/output end port links to each other to said low pass filter and the end that structure capacitive links to each other.
Preferably, the said body of rod comprises the connecting rod that links to each other with input/output end port, the low pass filter that links to each other with connecting rod one end; At least one coupled structure is connected between end that one of said connecting rod and input/output end port link to each other to said low pass filter and the end that connecting rod links to each other.
Preferably, said connecting rod is the connector inner wire.
Preferably, said connecting rod is the connector inner wire and be connected mobile jib, and said connector inner wire connects input/output end port, and said connection mobile jib connects an end of said connector inner wire.
Preferably, another end of the said jockey body of rod is connected with coupling device.
Preferably, said jockey is arranged in the dividing wall in the cavity, has the side mouth that is used to derive said coupled structure on the body of rod of said jockey.
Preferably, in the said resonant cavity resonant rod is installed, said coupled structure is tap line or tap sheet, and an end of said tap line or tap sheet links to each other with said jockey, and the other end of tap line is connected on the said resonant rod.
Preferably; In the said resonant cavity resonant rod is installed, said coupled structure is a coupling disc, and said coupling disc comprises a body of rod and is positioned at the card of the body of rod one end; The free end of the body of rod of said coupling disc connects said jockey, and the card of said coupling disc is relative with said resonant rod.
Preferably, said cavity body filter is duplexer, mixer or tower amplifier.
The cavity body filter that the utility model enforcement provides; Its coupled structure can be arranged on jockey flexibly because the determining positions of coupled structure the position in first chamber and last chamber, therefore can require to select the position in first chamber or last chamber according to the best cloth chamber of resonant cavity; And do not receive the restriction of coupled structure; All be arranged in the jockey port position with respect to coupled structure of the prior art, it is flexible that the cloth chamber becomes, and can make full use of cavity space.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a cavity body filter coupled structure sketch map in the prior art;
Fig. 2 is the profile of coupled structure in a kind of cavity body filter among the utility model embodiment one;
Fig. 3 is the profile of coupled structure in a kind of cavity body filter among the utility model embodiment two;
Fig. 4 is the profile of coupled structure in a kind of cavity body filter among the utility model embodiment four.
Embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment one,
A kind of cavity body filter, as shown in Figure 2, comprise cavity 210; Input/output end port 220 on the cavity; Comprise a plurality of resonant cavitys in the cavity 210, coupled structure that at least one and resonant cavity are coupled and jockey 230 are example with the duplexer; It is respectively 241 and 242 that coupled structure among the utility model embodiment is two; Jockey comprises the body of rod and the end that is positioned at body of rod two ends, and an end of the body of rod connects input/output end port, and at least one coupled structure links to each other with the body of rod of jockey.
Jockey is a connecting rod among the utility model embodiment; Connecting rod can be the connector inner wire; Connecting rod also can be connector inner wire and the connecting rod that is connected the mobile jib combination, and the connector inner wire connects input/output end port, connects the end that mobile jib connects the connector inner wire.
Coupled structure is used for signal is derived through input/output end port through input/output end port feed-in cavity or with the signal in the cavity; Radiofrequency signal gets into cavity body filter from input port, and through connecting rod, the coupled structure on the connecting rod will be a resonant cavity of signal introduction chamber fluid filter first chamber; Signal is again via a plurality of resonant cavitys through designing and arranging; Finally derive signal by output port, same output port also is connected with the connecting rod of band coupled structure, and it is last chamber that signal has passed through last resonant cavity in the cavity; Coupled structure that will be through output port finally obtains desired signal with the signal output port that is coupled out.When having shared input of multiple signals or output port, then on the connecting rod multichannel coupled structure can be set.
Shown in Fig. 2 is the duplexer of shared input of two paths of signals or output port, comprises two coupled structures, wherein also has a coupled structure to be connected the end of connecting rod, and the position of the coupled structure described in the figure is a kind of of various embodiments.Coupled structure during the utility model is implemented can be arranged on connecting rod flexibly; Because the determining positions of coupled structure the position in first chamber and last chamber; Therefore can require to select the position in first chamber or last chamber according to the best cloth chamber of resonant cavity, and not receive the restriction of coupled structure, all be arranged in the connecting rod end position with respect to coupled structure of the prior art; It is flexible that the cloth chamber becomes, and can make full use of cavity space.
Wherein, connecting rod is arranged in the dividing wall in the cavity, has the side mouth that is used to derive coupled structure on the body of rod of connecting rod.
In the resonant cavity among the utility model embodiment resonant rod is installed, coupled structure can be tap line or tap sheet, and an end of tap line or tap sheet links to each other with connecting rod, and the other end of tap line or tap sheet is connected on the resonant rod.
Coupled structure among the utility model embodiment can also be the coupled structure of coupling disc; Concrete; Coupling disc comprises a body of rod and is positioned at the card of the body of rod one end, and the free end of the body of rod of said coupling disc connects said jockey, and the card of said coupling disc is relative with said resonant rod.
Coupled structure can also be the coupled structure of other kinds form among the utility model embodiment, and the form of coupled structure does not constitute the restriction to the utility model.The number of the coupled structure of the utility model can have a plurality of, does not also receive the restriction of this execution mode.The position of arranging of coupled structure also is not limited to a kind of embodiment of the utility model, and coupled structure can require on connecting rod, freely to arrange according to the cloth chamber.
The cavity body filter of the utility model can be duplexer, mixer or tower amplifier.
Embodiment two,
A kind of cavity body filter, as shown in Figure 3, comprise cavity 310; Cavity 310 is provided with input/output end port 320, comprises a plurality of resonant cavitys in the cavity, coupled structure that at least one and resonant cavity are coupled and jockey; In this enforcement with two paths of signals shared one the input or output port be example; For example duplexer comprises that two coupled structures are respectively 341 and 342, and jockey comprises the body of rod and the end that is positioned at body of rod two ends; An end of the said body of rod connects said input/output end port, and at least one coupled structure links to each other with the body of rod of said jockey.
The body of rod of the jockey in the present embodiment comprises and input/output end port connecting rod 330 mutually; One end of connecting rod also is connected with low pass filter 331, and at least one coupled structure is connected between end that one of connecting rod and input/output end port link to each other to said low pass filter and the end that connecting rod links to each other.Promptly for the signal that need not through low pass filter, coupled structure can be arranged on the connecting rod, like coupled structure 342, need can be arranged on the other end of low pass filter through the coupled structure of low pass filter, like coupled structure 341.
Coupled structure during the utility model is implemented can be arranged on connecting rod flexibly; Because the determining positions of coupled structure the position in first chamber and last chamber; Therefore can require to select the position in first chamber or last chamber according to the best cloth chamber of resonant cavity, and not receive the restriction of coupled structure, all be arranged in the connecting rod port position with respect to coupled structure of the prior art; It is flexible that the cloth chamber becomes, and can make full use of cavity space.
Jockey is a connecting rod among the utility model embodiment; Connecting rod can be the connector inner wire; Connecting rod also can be connector inner wire and the connecting rod that is connected the mobile jib combination, and the connector inner wire connects input/output end port, connects the end that mobile jib connects the connector inner wire.
Wherein, connecting rod is arranged in the dividing wall in the cavity, has the side mouth that is used to derive coupled structure on the body of rod of connecting rod.
In the resonant cavity among the utility model embodiment resonant rod is installed, coupled structure can be tap line or tap sheet, and an end of tap line or tap sheet links to each other with connecting rod, and the other end of tap line or tap sheet is connected on the resonant rod.
Coupled structure among the utility model embodiment can also be the coupled structure of coupling disc; Concrete; Coupling disc comprises a body of rod and is positioned at the card of the body of rod one end, and the free end of the body of rod of said coupling disc connects said jockey, and the card of said coupling disc is relative with said resonant rod.
Coupled structure can also be the coupled structure of other kinds form among the utility model embodiment, and the form of coupled structure does not constitute the restriction to the utility model.The number of the coupled structure of the utility model can have a plurality of, does not also receive the restriction of this execution mode.The position of arranging of coupled structure also is not limited to a kind of embodiment of the utility model, and coupled structure can require on connecting rod, freely to arrange according to the cloth chamber.
The cavity body filter of the utility model can be duplexer, mixer or tower amplifier.
Embodiment three,
A kind of cavity body filter; Comprise cavity, cavity is provided with input/output end port, comprises a plurality of resonant cavitys in the cavity; Coupled structure that at least one and resonant cavity are coupled and jockey; Jockey comprises the body of rod and the end that is positioned at body of rod two ends, and an end of the body of rod connects input/output end port, and at least one coupled structure links to each other with the body of rod of jockey.
With shared input of two paths of signals or output port is example, duplexer for example, and the body of rod of jockey comprises the connecting rod that links to each other with input/output end port, the structure capacitive that links to each other with connecting rod one end; At least one coupled structure is connected on the body of rod of connecting rod or on the body of rod of structure capacitive or on the connecting portion of connecting rod and said structure capacitive.Described connecting portion can be that the end of structure capacitive also can be the end of connecting rod.Structure capacitive has the effect of lightning protection, and for the signal that need not through structure capacitive, coupled structure can be arranged on the connecting rod body of rod, need can be arranged on the other end of structure capacitive through the coupled structure of structure capacitive.
Coupled structure during the utility model is implemented can be arranged on connecting rod flexibly; Because the determining positions of coupled structure the position in first chamber and last chamber; Therefore can require to select the position in first chamber or last chamber according to the best cloth chamber of resonant cavity, and not receive the restriction of coupled structure, all be arranged in the connecting rod port position with respect to coupled structure of the prior art; It is flexible that the cloth chamber becomes, and can make full use of cavity space.
Jockey is a connecting rod among the utility model embodiment; Connecting rod can be the connector inner wire; Connecting rod also can be connector inner wire and the connecting rod that is connected the mobile jib combination, and the connector inner wire connects input/output end port, connects the end that mobile jib connects the connector inner wire.
Wherein, connecting rod is arranged in the dividing wall in the cavity, has the side mouth that is used to derive coupled structure on the body of rod of connecting rod.
In the resonant cavity among the utility model embodiment resonant rod is installed, coupled structure can be tap line or tap sheet, and an end of tap line or tap sheet links to each other with connecting rod, and the other end of tap line or tap sheet is connected on the resonant rod.
Coupled structure among the utility model embodiment can also be the coupled structure of coupling disc; Concrete; Coupling disc comprises a body of rod and is positioned at the card of the body of rod one end, and the free end of the body of rod of said coupling disc connects said jockey, and the card of said coupling disc is relative with said resonant rod.
Coupled structure can also be the coupled structure of other kinds form among the utility model embodiment, and the form of coupled structure does not constitute the restriction to the utility model.The number of the coupled structure of the utility model can have a plurality of, does not also receive the restriction of this execution mode.The position of arranging of coupled structure also is not limited to a kind of embodiment of the utility model, and coupled structure can require on connecting rod, freely to arrange according to the cloth chamber.
The cavity body filter of the utility model can be duplexer, mixer or tower amplifier.
Embodiment four,
A kind of cavity body filter comprises cavity 410, and cavity 410 is provided with input/output end port 420; Comprise a plurality of resonant cavitys in the cavity; Coupled structure that at least one and resonant cavity are coupled and jockey, in this enforcement with two paths of signals shared one the input or output port be example, for example duplexer; Comprise that two coupled structures are respectively 441 and 442; Jockey comprises the body of rod and the end that is positioned at body of rod two ends, and an end of the said body of rod connects said input/output end port, and at least one coupled structure links to each other with the body of rod of said jockey.
With shared input of two paths of signals or output port is example; Like duplexer, the jockey body of rod comprises the connecting rod 430 that links to each other with input/output end port, the structure capacitive 431 that links to each other with connecting rod one end, the low pass filter 432 that links to each other with said structure capacitive one end; Between that at least one coupled structure is connected said connecting rod and end that input/output end port links to each other to said low pass filter and the end that structure capacitive links to each other.
For the signal that need not through low pass filter, coupled structure can be arranged on connecting rod and the structure capacitive, as 442, need can be arranged on another end of low pass filter through the coupled structure of structure capacitive and low pass filter, as 441.
Coupled structure during the utility model is implemented can be arranged on connecting rod flexibly; Because the determining positions of coupled structure the position in first chamber and last chamber; Therefore can require to select the position in first chamber or last chamber according to the best cloth chamber of resonant cavity, and not receive the restriction of coupled structure, all be arranged in the connecting rod port position with respect to coupled structure of the prior art; It is flexible that the cloth chamber becomes, and can make full use of cavity space.
Jockey is a connecting rod among the utility model embodiment; Connecting rod can be the connector inner wire; Connecting rod also can be connector inner wire and the connecting rod that is connected the mobile jib combination, and the connector inner wire connects input/output end port, connects the end that mobile jib connects the connector inner wire.
Wherein, connecting rod is arranged in the dividing wall in the cavity, has the side mouth that is used to derive coupled structure on the body of rod of connecting rod.
In the resonant cavity among the utility model embodiment resonant rod is installed, coupled structure can be tap line or tap sheet, and an end of tap line or tap sheet links to each other with connecting rod, and the other end of tap line or tap sheet is connected on the resonant rod.
Coupled structure among the utility model embodiment can also be the coupled structure of coupling disc; Concrete; Coupling disc comprises a body of rod and is positioned at the card of the body of rod one end, and the free end of the body of rod of said coupling disc connects said jockey, and the card of said coupling disc is relative with said resonant rod.
Coupled structure can also be the coupled structure of other kinds form among the utility model embodiment, and the form of coupled structure does not constitute the restriction to the utility model.The number of the coupled structure of the utility model can have a plurality of, does not also receive the restriction of this execution mode.The position of arranging of coupled structure also is not limited to a kind of embodiment of the utility model, and coupled structure can require on connecting rod, freely to arrange according to the cloth chamber.
The cavity body filter of the utility model can be duplexer, mixer or tower amplifier.
More than cavity body filter that the utility model embodiment is provided and the base station that comprises cavity body filter in this carried out detailed introduction, wherein:
The cavity body filter that the utility model enforcement provides; Its coupled structure can be arranged on connecting rod flexibly because the determining positions of coupled structure the position in first chamber and last chamber, therefore can require to select the position in first chamber or last chamber according to the best cloth chamber of resonant cavity; And do not receive the restriction of coupled structure; All be arranged in the connecting rod port position with respect to coupled structure of the prior art, it is flexible that the cloth chamber becomes, and can make full use of cavity space.
Used concrete example among this paper the principle and the execution mode of the utility model are set forth, the explanation of above embodiment just is used to help to understand the method and the core concept thereof of the utility model; Simultaneously, for one of ordinary skill in the art, according to the thought of the utility model, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the utility model.

Claims (12)

1. a cavity body filter is characterized in that, comprises cavity; Said cavity is provided with input/output end port; Comprise a plurality of resonant cavitys in the said cavity, coupled structure that at least one and resonant cavity are coupled and jockey, said jockey comprise the body of rod and the end that is positioned at body of rod two ends; An end of the said body of rod connects said input/output end port, and at least one coupled structure links to each other with the body of rod of said jockey.
2. cavity body filter according to claim 1 is characterized in that, the said body of rod is a connecting rod, and said connecting rod comprises the connecting rod body of rod and the end that is positioned at body of rod two ends;
At least one coupled structure is connected on the said connecting rod body of rod.
3. cavity body filter according to claim 1 is characterized in that, the described body of rod comprises the connecting rod that links to each other with input/output end port, the structure capacitive that links to each other with connecting rod one end;
At least one coupled structure is connected on the body of rod of said connecting rod or on the body of rod of said structure capacitive or on the connecting portion of said connecting rod and said structure capacitive.
4. cavity body filter according to claim 1 is characterized in that, the said body of rod comprises the connecting rod that links to each other with input/output end port, the structure capacitive that links to each other with connecting rod one end, the low pass filter that links to each other with said structure capacitive one end;
Between that at least one coupled structure is connected said connecting rod and end that input/output end port links to each other to said low pass filter and the end that structure capacitive links to each other.
5. cavity body filter according to claim 1 is characterized in that the said body of rod comprises the connecting rod that links to each other with input/output end port, the low pass filter that links to each other with connecting rod one end;
At least one coupled structure is connected between end that one of said connecting rod and input/output end port link to each other to said low pass filter and the end that connecting rod links to each other.
6. according to any described cavity body filter of claim 1~5, it is characterized in that said connecting rod is the connector inner wire.
7. according to any described cavity body filter of claim 1~5; It is characterized in that; Said connecting rod is the connector inner wire and be connected mobile jib, and said connector inner wire connects input/output end port, and said connection mobile jib connects an end of said connector inner wire.
8. according to any described cavity body filter of claim 1~5, it is characterized in that another end of the said jockey body of rod is connected with coupling device.
9. according to any described cavity body filter of claim 1~5, it is characterized in that said jockey is arranged in the dividing wall in the cavity, has the side mouth that is used to derive said coupled structure on the body of rod of said jockey.
10. according to any described cavity body filter of claim 1~5; It is characterized in that; In the said resonant cavity resonant rod is installed; Said coupled structure is tap line or tap sheet, and an end of said tap line or tap sheet links to each other with said jockey, and the other end of tap line is connected on the said resonant rod.
11. according to any described cavity body filter of claim 1~5; It is characterized in that; In the said resonant cavity resonant rod is installed, said coupled structure is a coupling disc, and said coupling disc comprises a body of rod and is positioned at the card of the body of rod one end; The free end of the body of rod of said coupling disc connects said jockey, and the card of said coupling disc is relative with said resonant rod.
12., it is characterized in that said cavity body filter is duplexer, mixer or tower amplifier according to any described cavity body filter of claim 1~5.
CN2011205758169U 2011-12-31 2011-12-31 Cavity filter Withdrawn - After Issue CN202454695U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103762402A (en) * 2011-12-31 2014-04-30 深圳市大富科技股份有限公司 Cavity filter
CN104577276A (en) * 2015-02-10 2015-04-29 深圳三星通信技术研究有限公司 Integrated low-pass hard link structure and cavity filter
WO2015090189A1 (en) * 2013-12-16 2015-06-25 华为技术有限公司 Duplexer and communication system using duplexer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103762402A (en) * 2011-12-31 2014-04-30 深圳市大富科技股份有限公司 Cavity filter
CN103762402B (en) * 2011-12-31 2016-08-03 深圳市大富科技股份有限公司 A kind of cavity body filter
WO2015090189A1 (en) * 2013-12-16 2015-06-25 华为技术有限公司 Duplexer and communication system using duplexer
US9929713B2 (en) 2013-12-16 2018-03-27 Huawei Technologies Co., Ltd. Duplexer and communications system having duplexer
CN104577276A (en) * 2015-02-10 2015-04-29 深圳三星通信技术研究有限公司 Integrated low-pass hard link structure and cavity filter
CN104577276B (en) * 2015-02-10 2017-05-10 深圳三星通信技术研究有限公司 Integrated low-pass hard link structure and cavity filter

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Granted publication date: 20120926

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