CN101355189A - Wave-guide coupling microstrip/strip line filter - Google Patents
Wave-guide coupling microstrip/strip line filter Download PDFInfo
- Publication number
- CN101355189A CN101355189A CNA2008100409766A CN200810040976A CN101355189A CN 101355189 A CN101355189 A CN 101355189A CN A2008100409766 A CNA2008100409766 A CN A2008100409766A CN 200810040976 A CN200810040976 A CN 200810040976A CN 101355189 A CN101355189 A CN 101355189A
- Authority
- CN
- China
- Prior art keywords
- filter
- plate
- waveguide
- shielding box
- microwave
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Images
Abstract
The invention provides a waveguide coupling micro-strip/band-shaped line filter, comprising a cover board for a shielding box in a microwave transceiving module, a microwave mixing circuit board, a base plate for the shielding box, a plate for a filter and a cover board for the filter, wherein the plate for the filter is separated from the microwave mixing circuit board and is coupled with the microwave mixing circuit board in a waveguide way, that is, the cover board for the shielding box is provided with two rectangular waveguide openings, the plate for the filter is provided with a micro-strip or strip-shaped line-waveguide converter corresponding to the microwave mixing circuit board; and a signal on the microwave mixing circuit board is coupled to the plate for the filter through the strip-shaped line-waveguide converter, and microwave mixing circuit board is filtered, strip-shaped line-waveguide converted and coupled so as to realize the micro-strip filter function. The waveguide coupling micro-strip/band-shaped line filter has the advantages of improving the maintainability, producibility and debugging performance of the product, improving the spurious suppression, solving the problems of microwave transmission line and the power cord intersection in the routing process of the double-surface circuit board, and improving the performance of the product.
Description
Technical field
The present invention relates to the filter in a kind of microwave communication, the Wave-guide coupling microstrip/strip line filter in particularly a kind of microwave hybrid circuit.
Background technology
The hybrid microwave circuit is extensively applied to fields such as communication, remote sensing, national defence, and filter is a hybrid microwave circuit important composition circuit.In microwave band, the filter in the hybrid microwave circuit is generally little band or strip line form, has the characteristics of compact conformation, and the theory of calculating such filter is quite ripe, and the precision height of simulation calculation is convenient to design and integrated.Yet, raising along with frequency, circuit size reduces with respect to wavelength, same mismachining tolerance can cause the amplitude-frequency characteristic of filter to have greatly changed, cause filter passband skew, the outer inhibition of band and passband fluctuation characteristic degradation, cause circuit performance can't reach the design objective requirement of expection.On the other hand, have only when all components and parts of microwave hybrid circuit mount just can test to judge whether filter satisfies index request after finishing, just mean that the microwave integrated circuit of the costliness that has mounted scraps, cause heavy economic losses in case do not satisfy.For addressing this problem, someone proposed the surface mount microstrip filter, though make filter separate with circuit module, so that replacing filter, bigger filter still is unfavorable for large-scale production but surface mount process is applied to area, and filter pin and solder joint can be introduced the ghost effect that is difficult to estimate, influence the index and the consistency of filter.
Summary of the invention
Technical problem of the present invention is the Wave-guide coupling microstrip/strip line filter that will provide a kind of filter to separate with microwave hybrid circuit.
In order to solve above technical problem, the invention provides a kind of Wave-guide coupling microstrip/strip line filter, comprise shielding box cover plate, microwave hybrid circuit plate, shielding box base plate, filter plate and filter cover board in the microwave transmitting and receiving module, filter plate separates with the microwave hybrid circuit plate, both adopt waveguide-coupled to separate the back, promptly open two rectangular waveguide mouths on the shielding box base plate, opposite position on filter plate and microwave hybrid circuit plate is provided with little band or strip line-waveguide transitions.
Two rectangular waveguide mouths opening on the described shielding box base plate, corresponding to the little band on microwave hybrid circuit plate and the filter plate or strip line-waveguide transitions position, this dislocation is a pair of little band-waveguide transitions probe, probe on the different plates shields between the probe on the same plate fully by waveguide-coupled.
Described shielding box cover plate, two rectangular waveguide mouth opposite positions of itself and shielding box base plate are provided with the short circuit face of little band-waveguide transitions, make the upside of shielding box base plate, by short circuit face, probe and rectangular waveguide opening, constitute little band-waveguide transitions structure.
Described filter cover board, the short circuit face opposite position of the little band-waveguide transitions on itself and the shielding box cover plate, have the short circuit face of little band-waveguide transitions, and between two short circuit faces, have sulculus, make the downside of shielding box base plate, by short circuit face, probe and rectangular waveguide mouth, constitute little band-waveguide transitions structure.
Between described shielding box cover plate, microwave hybrid circuit plate, shielding box base plate, filter plate and the filter cover board, all there is location hole to locate, and locks with securing member with alignment pin.
The signal of original feed-in filter is coupled on the filter plate at the shielding box base plate back side on the microwave hybrid circuit plate by the open ended waveguide on the shielding box base plate, after filtering, return the microwave hybrid circuit plate by shielding box base plate waveguide-coupled again, the waveguide short face that microwave hybrid circuit plate, filter plate and waveguide-coupled need is all by alignment pin and shielding box base plate relative positioning, and is locked on the shielding box base plate with securing member.
Superior effect of the present invention is:
1) filter plate separates with the microwave hybrid circuit plate, in case filter goes wrong like this, only needs to change filter plate and just can deal with problems, and do not cause whole microwave circuit module to be scrapped;
2) filter plate is fixed with securing member, has avoided surface mount process, and mounting or dismounting are all convenient;
3) original RF circuit module can only be tested on input, output port, then can only use the probe in detecting signal onboard, but for high-frequency signal, it is very insecure relying on probe to come sampled signal; But if adopt structure provided by the invention, then can connect waveguide at the waveguide-coupled mouth and draw signal, this equals to module has increased by two high-frequency test ports, just with the debugging of inside modules;
4) cavity above the original filter circuit is communicated with, and the higher mode of high-frequency signal can be directly coupled to output from filter input end by modes such as radiation, thereby brings beyond thought spuious to system.And adopt structure provided by the invention, cavity between the filter input and output side of hybrid microwave circuit board is a complete closed, filter cavity then can specialized designs to avoid being directly coupled to the other end by the space from filter one end with outer signal, therefore the band that has improved filter suppresses outward, has promptly improved module to spuious inhibition;
5) original microwave hybrid circuit adopts the double sided board form, and filter place circuit is not allow any other circuit to cross over, but can run into the situation that power line will be crossed over microwave transmission line when circuit board wiring, has brought difficulty for like this wiring of circuit board.And after adopting structure of the present invention, equal to allow filter to the back side cabling of base plate, and the space between two ports of filter can be utilized power line fully, therefore the wiring for circuit board provides a kind of selection more;
6) therefore the microwave hybrid circuit plate can require respectively substrate to be selected targetedly and optimized with different several sheet material according to circuit design with filter plate, finally promotes the performance of product.
Description of drawings
Fig. 1 is for having the schematic diagram of the shielding box base plate of waveguide openings in the transceiver module of the present invention;
Fig. 2 is for there being the schematic diagram of filter coupled port as if the microwave hybrid circuit plate of hanging river in the transceiver module of the present invention;
Fig. 3 is the schematic diagram of the shielding box cover plate of short circuit face structure that little band-waveguide transitions is arranged in the transceiver module of the present invention;
Fig. 4 is the schematic diagram of the filter plate of coupling I/O end that filter is arranged in the transceiver module of the present invention;
Fig. 5 is the schematic diagram of the filter cover board of short circuit face structure that little band-waveguide transitions is arranged in the transceiver module of the present invention;
Fig. 6 is an assembling decomposing schematic representation of the present invention;
The number in the figure explanation
1-shielding box base plate; 101-rectangular waveguide mouth;
2-microwave hybrid circuit plate; Little band-the waveguide probe of 201-;
3-shielding box cover plate; 301-waveguide short face;
The 4-filter plate;
Little band-the waveguide probe of 401-; The 402-location hole;
The 403-fixing hole; The 404-microstrip/strip line filter;
The 5-filter cover board;
501-waveguide short face; The 502-sulculus;
The 503-location hole; The 504-fixing hole.
Embodiment
See also shown in the accompanying drawing, the invention will be further described.
The invention provides a kind of Wave-guide coupling microstrip/strip line filter, comprise shielding box cover plate 3, microwave hybrid circuit plate 2, shielding box base plate 1, filter plate 4 and filter cover board 5 in the microwave transmitting and receiving module, filter plate 4 separates with microwave hybrid circuit plate 2, both adopt waveguide-coupled to separate the back, promptly on the shielding box base plate, 1 open two rectangular waveguide mouths 101, opposite position on filter plate 4 and microwave hybrid circuit plate 2 is provided with little band or strip line-waveguide transitions.
As depicted in figs. 1 and 2, two rectangular waveguide mouths 101 opening on the described shielding box base plate 1, corresponding to the little band on microwave hybrid circuit plate 2 and the filter plate 4 or strip line-waveguide transitions position, this dislocation is a pair of little band-waveguide transitions probe, probe on the different plates shields between the probe on the same plate fully by waveguide-coupled.
As shown in Figure 3, described shielding box cover plate 3, two rectangular waveguide mouth 101 opposite positions of itself and shielding box base plate 1, be provided with the short circuit face 301 of little band-waveguide transitions, make the upside of shielding box base plate 1, by short circuit face 301, probe 201 and rectangular waveguide opening 101, constitute little band-waveguide transitions structure.
As shown in Figure 4, two rectangular waveguide mouths 101 of filter plate 4 corresponding shielding box base plates 1 are provided with a pair of little band-waveguide transitions probe 401, and little band or strip line filter 404 are arranged between a pair of probe 401.
As shown in Figure 5, short circuit face 301 opposite positions of the little band-waveguide transitions on the described filter cover board 5, itself and shielding box cover plate 1 have the short circuit face 501 of little band-waveguide transitions, and between two short circuit faces 501, have sulculus 502, be used for placing microstrip filter; If adopt strip line filter, then the complete closed sulculus 502.Make the downside of shielding box base plate 1,, also constitute little band-waveguide transitions structure, constituted the input/output signal coupling of filter with the little band-waveguide transitions structure of upside by short circuit face 501, probe 401 and rectangular waveguide mouth 101.
As shown in Figure 6, between described shielding box cover plate 3, microwave hybrid circuit plate 2, shielding box base plate 1, filter plate 4 and the filter cover board 5, all there is location hole to locate, and locks with securing member with alignment pin.Location hole 402 and fixing hole 403 are arranged on the filter plate 4 as shown in Figure 4; Location hole 502 on the filter cover board 5 as shown in Figure 5 and fixing hole 503.
The signal of original feed-in filter is coupled on the filter plate 4 at shielding box base plate 3 back sides on the microwave hybrid circuit plate 2 by the rectangular waveguide mouth 101 on the shielding box base plate 3, after filtering, return microwave hybrid circuit plate 2 by shielding box base plate 3 waveguide-coupled again, the waveguide short face that microwave hybrid circuit plate 2, filter plate 4 and waveguide-coupled need is all by alignment pin and shielding box base plate 1 relative positioning, and is locked on the shielding box base plate 1 with securing member.
Signal on the microwave hybrid circuit plate 2 is coupled to filter plate 4 by little band-waveguide transitions, again by little band-waveguide transitions coupling back microwave hybrid circuit plate 2, has realized the function of microstrip filter in the traditional design after Filtering Processing.
Claims (5)
1, a kind of Wave-guide coupling microstrip/strip line filter comprises shielding box cover plate, microwave hybrid circuit plate, shielding box base plate, filter plate and filter cover board in the microwave transmitting and receiving module, and its spy is characterised in that:
Filter plate separates with the microwave hybrid circuit plate, and both adopt waveguide-coupled to separate the back, promptly open two rectangular waveguide mouths on the shielding box base plate, and opposite position on filter plate and microwave hybrid circuit plate is provided with little band or strip line-waveguide transitions.
2, by the described a kind of Wave-guide coupling microstrip/strip line filter of claim 1, it is characterized in that:
Two rectangular waveguide mouths opening on the described shielding box base plate, corresponding to the little band on microwave hybrid circuit plate and the filter plate or strip line-waveguide transitions position, this dislocation is a pair of little band-waveguide transitions probe, probe on the different plates shields between the probe on the same plate fully by waveguide-coupled.
3, by the described a kind of Wave-guide coupling microstrip/strip line filter of claim 1, it is characterized in that:
Described shielding box cover plate, two rectangular waveguide mouth opposite positions of itself and shielding box base plate are provided with the short circuit face of little band-waveguide transitions, make the upside of shielding box base plate, by short circuit face, probe and rectangular waveguide opening, constitute little band-waveguide transitions structure.
4, by the described a kind of Wave-guide coupling microstrip/strip line filter of claim 1, it is characterized in that:
Described filter cover board, the short circuit face opposite position of the little band-waveguide transitions on itself and the shielding box cover plate, have the short circuit face of little band-waveguide transitions, and between two short circuit faces, have sulculus, make the downside of shielding box base plate, by short circuit face, probe and rectangular waveguide mouth, constitute little band-waveguide transitions structure.
5, by the described a kind of Wave-guide coupling microstrip/strip line filter of claim 1, it is characterized in that:
Between described shielding box cover plate, microwave hybrid circuit plate, shielding box base plate, filter plate and the filter cover board, all there is location hole to locate, and locks with securing member with alignment pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100409766A CN101355189A (en) | 2008-07-24 | 2008-07-24 | Wave-guide coupling microstrip/strip line filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100409766A CN101355189A (en) | 2008-07-24 | 2008-07-24 | Wave-guide coupling microstrip/strip line filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101355189A true CN101355189A (en) | 2009-01-28 |
Family
ID=40307858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100409766A Pending CN101355189A (en) | 2008-07-24 | 2008-07-24 | Wave-guide coupling microstrip/strip line filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101355189A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102859787A (en) * | 2011-05-17 | 2013-01-02 | 华为技术有限公司 | Microwave module |
| CN103219587A (en) * | 2013-04-07 | 2013-07-24 | 北京理工大学 | Terahertz front-end integrated receiving device based on bulk silicon MEMS (micro-electromechanical system) technical antenna |
| CN108134586A (en) * | 2017-11-20 | 2018-06-08 | 上海无线电设备研究所 | A kind of cut-in method of Microwave Cavity Filter |
| CN108428975A (en) * | 2018-02-12 | 2018-08-21 | 北京理工大学 | A kind of built-in type W-waveband waveguide filter based on medium integrated waveguide antarafacial feed |
| CN109390645A (en) * | 2017-08-04 | 2019-02-26 | 启碁科技股份有限公司 | Band pass filter means, method of communicating signals and outdoor unit |
| CN111193087A (en) * | 2018-11-14 | 2020-05-22 | 日本电产株式会社 | Waveguide device and signal generating device |
| CN112103608A (en) * | 2020-09-29 | 2020-12-18 | 中国航空工业集团公司雷华电子技术研究所 | Power divider and power combiner with high isolation |
-
2008
- 2008-07-24 CN CNA2008100409766A patent/CN101355189A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102859787A (en) * | 2011-05-17 | 2013-01-02 | 华为技术有限公司 | Microwave module |
| CN102859787B (en) * | 2011-05-17 | 2015-03-11 | 华为技术有限公司 | Microwave module |
| US9301426B2 (en) | 2011-05-17 | 2016-03-29 | Huawei Technologies Co., Ltd. | Microwave module |
| CN103219587A (en) * | 2013-04-07 | 2013-07-24 | 北京理工大学 | Terahertz front-end integrated receiving device based on bulk silicon MEMS (micro-electromechanical system) technical antenna |
| CN109390645A (en) * | 2017-08-04 | 2019-02-26 | 启碁科技股份有限公司 | Band pass filter means, method of communicating signals and outdoor unit |
| CN109390645B (en) * | 2017-08-04 | 2021-06-25 | 启碁科技股份有限公司 | Band-pass filter device, signal transmission method, and outdoor unit |
| CN108134586A (en) * | 2017-11-20 | 2018-06-08 | 上海无线电设备研究所 | A kind of cut-in method of Microwave Cavity Filter |
| CN108428975A (en) * | 2018-02-12 | 2018-08-21 | 北京理工大学 | A kind of built-in type W-waveband waveguide filter based on medium integrated waveguide antarafacial feed |
| CN108428975B (en) * | 2018-02-12 | 2019-10-11 | 北京理工大学 | A kind of built-in type W-waveband waveguide filter based on medium integrated waveguide antarafacial feed |
| CN111193087A (en) * | 2018-11-14 | 2020-05-22 | 日本电产株式会社 | Waveguide device and signal generating device |
| CN112103608A (en) * | 2020-09-29 | 2020-12-18 | 中国航空工业集团公司雷华电子技术研究所 | Power divider and power combiner with high isolation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101355189A (en) | Wave-guide coupling microstrip/strip line filter | |
| CN201383535Y (en) | Rectangular waveguide-substrate integrated waveguide signal conversion and power divider | |
| CN102800906B (en) | Multilayer ceramic substrate integrated waveguide filter | |
| CN104577268B (en) | Plane low pass band logical triplexer | |
| CN102047502A (en) | Surface-mountable antenna with waveguide connector function, communication system, adaptor and arrangement comprising the antenna device | |
| CN103531874B (en) | Double-passband balun filter | |
| EP2744037A1 (en) | Filter, receiver, transmitter and transceiver | |
| CN203367454U (en) | Band-pass filter based on half mode substrate integrated waveguide | |
| CN104617364B (en) | A kind of integrated waveguide radio-frequency front-end component | |
| WO2008148327A1 (en) | A single-board hardware device and radio-frequency blind-mated connecting device | |
| CN100495814C (en) | Any dual-frequency band 3dB branch directional coupler | |
| CN101471736A (en) | Passive cross modulation test system | |
| CN201210512Y (en) | Directional coupler for wideband wave-guide | |
| CN204375881U (en) | Plane lower passband leads to triplexer | |
| CN1964131A (en) | A filter of direct coupling triangle substrate integral waveguide cavity | |
| CN203674357U (en) | Radio frequency power synthesis and output system | |
| CN104882660B (en) | A kind of C frequency ranges test coupler | |
| CN201060919Y (en) | Arbitrarily dual-frequency band 3dB branch directional coupler | |
| CN202662766U (en) | Novel high-isolation low-intermodulation co-frequent combiner | |
| US20230327313A1 (en) | Dielectric filter, and au, ru or bs having the same | |
| CN204088527U (en) | There is positive and negative convertible cross-linked waveguide duplexer | |
| CN109873655A (en) | Microwave transmitting and receiving channel components | |
| CN102881976A (en) | Waveguide filter for realizing functions of power divider | |
| CN105428763A (en) | Filtering structure and band-stop filter | |
| CN203481347U (en) | Symmetrical two-hole coupling waveguide directional filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090128 |