CN109585990A - A kind of ultra wide band load microwave filter - Google Patents
A kind of ultra wide band load microwave filter Download PDFInfo
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- CN109585990A CN109585990A CN201811248257.3A CN201811248257A CN109585990A CN 109585990 A CN109585990 A CN 109585990A CN 201811248257 A CN201811248257 A CN 201811248257A CN 109585990 A CN109585990 A CN 109585990A
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- Prior art keywords
- cavity
- resonant rod
- wide band
- ultra wide
- microwave filter
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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
A kind of ultra wide band proposed by the present invention loads microwave filter, comprising: cavity and cover board；The resonant rod of inside cavity is arranged using interdigital model structure, corresponds to each resonant rod on cavity and is equipped with an adjusting screw rod, adjusting screw rod through cavities is arranged and is located on the extending direction of corresponding resonant rod.A kind of ultra wide band proposed by the present invention loads microwave filter, is a kind of structure and mounting means is more simple, volume is smaller, weight is lighter, maintenance and replacement, band bandwidth is facilitated to cover filter that is wider and can playing a significant role in microwave communication and electronics investigation and in fighting.
Description
Technical field
The present invention relates to wave filter technology fields more particularly to a kind of ultra wide band to load microwave filter.
Background technique
Microwave filter is the two-port network of a kind of passive low-loss, is mainly used for military microwave communication and electronic countermeasure
In system, it is used to control the frequency response of signal in systems, useful signal frequency is made nondestructively to pass through filter, and it is useless
Signal frequency inhibition attenuate.
With information-based development, current army also changes to informationalized force, and the original various equipment of army are
Tend to aging and fall behind the requirement for being difficult to meet modernization, is badly in need of updating.And with modern military communication and equipment
High speed development, the relevant technologies are also evolving, and this requires military equipments to continue to introduce new.Higher frequency, covering bandwidth
It is wider；Volume is smaller, more portable；Modularization, the product demand for facilitating maintenance to replace also are come into being.
The structure for traditional coaxial cavity cascade plus coupling window that microwave filter military at present still uses mostly is come in fact
It is existing, it is limited by structure, such small product size is larger, and it is more thick and heavy, and structure is complicated, needs to be carried out with fastening screw fastening close
Envelope, stability and poor reliability are difficult to break through 30% relative bandwidth in the realization of bandwidth.These disadvantages all determine tradition
Microwave filter can not meet modernization require.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of ultra wide bands to load microwave filter.
A kind of ultra wide band proposed by the present invention loads microwave filter, comprising: cavity and cover board；
The resonant rod of inside cavity is arranged using interdigital model structure, corresponds to each resonant rod on cavity and is equipped with one
Adjusting screw rod, adjusting screw rod through cavities are arranged and are located on the extending direction of corresponding resonant rod；It is arranged on adjusting screw rod
For the nut of locking, nut is located on the outside of cavity；
It is located at two sides opposite on resonant rod extending direction on the outside of cavity and is equipped with the first groove, each nut is respectively positioned on first
In groove；
Each resonant rod is equipped with loading disc close to one end of adjusting screw rod, loading disc cover resonant rod and be located at perpendicular to
In the plane of resonant rod；The both ends for being located at the signal path that resonant rod is constituted on cavity are respectively provided with signal input or output
Contact pin, two contact pins respectively at signal path both ends loading disc be welded to connect；
Cover board is mounted on cavity, and cavity and cover board cooperatively form sealing structure.
Preferably, resonant rod uses square structure.
Preferably, loading disc is square structure.
Preferably, resonant rod and cavity are integrally formed.
Preferably, plane where cover board is parallel to the axis of each resonant rod.
Preferably, epoxy resin is coated on nut.
Preferably, it is equipped on the outside of cavity and is mounted in the second groove with matched second groove of cover board, cover board welding.
Preferably, cavity bottom is equipped with mounting hole, and mounting hole is threaded hole, and mounting hole axis is parallel to resonant rod extension side
Upwards.
A kind of ultra wide band proposed by the present invention loads microwave filter, is realized using interdigital structure, relatively traditional
Filter, more compact structure eliminate the coupling tuning screw of coupling window, can effectively reduce product length, accomplish small
Type, and product can be allowed to realize broader bandwidth.
In the present invention, designed using rectangular resonant cavity and resonant rod, and processed using the mode of wire cutting, by resonance
Bar and cavity processing are integral, greatly reduce number of parts, and eliminate the fastening screw of resonant rod, and increase product can
By property, the weight of entire product is alleviated.Resonant cavity of the invention realized by the way of the load of resonant rod header-terminal capacitance,
The length of resonant rod in resonant cavity can be effectively reduced in which under the same resonance frequency, thus reduce entire product height and
Width is accomplished to minimize.
It is that a kind of structure and mounting means are more simple as it can be seen that a kind of ultra wide band proposed by the present invention loads microwave filter
List, volume are smaller, weight is lighter, facilitate maintenance and replacement, band bandwidth covering is wider and can investigate in microwave communication and electronics
With the filter to play a significant role in confrontation.
Detailed description of the invention
Fig. 1 is that a kind of ultra wide band proposed by the present invention loads microwave filter half sectional view；
Fig. 2 is the bottom view of Fig. 1；
Fig. 3 is the side view of Fig. 1.
Specific embodiment
Referring to Fig.1, a kind of ultra wide band proposed by the present invention loads microwave filter, comprising: cavity 1 and cover board 2.
Resonant rod 3 inside cavity 1 is arranged using interdigital model structure, that is, and adjacent resonant rod 3 is mutually reverse, in this way,
Coupling tuning screw is eliminated, so that 1 inner space of cavity is more compact, and the coefficient of coup between this structure type resonant cavity is very
By force, the requirement of ultra wide bandwidth may be implemented.In present embodiment, resonant rod 3 uses square structure, and resonant rod 3 and cavity one
It is body formed, it is processed in a manner of facilitating through wire cutting, processing efficiency both can be improved, reduce difficulty of processing；Again than passing
System riveting method realizes higher precision and reliability.
Each resonant rod 3 is corresponded on cavity 1 and is equipped with an adjusting screw rod 4, and 4 through cavities 1 of adjusting screw rod is arranged simultaneously
On the extending direction of corresponding resonant rod 3.The nut 5 for locking is arranged on adjusting screw rod 4, nut 5 is located at cavity 1
Outside.It is adjusted by the feeding depth of adjusting screw rod 4, it can be achieved that the frequency response of higher-frequency is precisely controlled.Nut 5 is for locking
Tight adjusting screw rod 4, avoids adjusting screw rod 4 from surprisingly sliding.Epoxy resin is coated in present embodiment, on nut 5 with further
It is fixed, increase firmness and safety.
It is located at two sides opposite on 3 extending direction of resonant rod in present embodiment, on the outside of cavity 1 and is equipped with the first groove,
Each nut 5 is respectively positioned in the first groove 6, and it is recessed the stretching first of adjusting screw rod 4 can be cut off by wire cutting after the fixation of adjusting screw rod 4
The part of slot 6.In this way, avoidable adjusting screw rod 4 and nut 5 are surprisingly touched, the safe and reliable of filter is further increased.
Each resonant rod 3 is equipped with loading disc 7 close to one end of adjusting screw rod 4, and loading disc 7 is rectangular.And loading disc 7 covers
Lid resonant rod 3 is simultaneously located at perpendicular in the plane of resonant rod 3.In present embodiment, loading disc 7 is also to pass through wire cutting and resonance
Bar 3 is processed integrally.In this way, loading disc 7 and adjusting screw rod 4 form capacitance structure, 6. resonant rod passes through the capacitive load on top
Mode reduce resonant rod 6. length, so as to reduce product height, realize miniaturization.
In present embodiment, it is defeated that the both ends of the signal path constituted on cavity 1 positioned at resonant rod 3 are respectively provided with signal
The contact pin 8 for entering or exporting, loading disc 7 of two contact pins 8 respectively at signal path both ends are welded to connect, and specifically use soldering.Such as
This plays the role of port match port by linking for contact pin 8 and loading disc 7, and passes through 8 lead of contact pin after scolding tin welds
Firm stable is able to satisfy the various environmental tests requirement of the military.In this way, microwave signal is transferred to filter by 8 lead of contact pin
After interior, useful signal passes through, and useless interference signal attenuates purpose is realized in filtering by the level-one grade of resonant cavity.
In present embodiment, cover board 2 is mounted on cavity 1, and cavity 1 and cover board 2 cooperatively form sealing structure.Specifically,
It is equipped in present embodiment, on the outside of cavity 1 and is mounted in the second groove with matched second groove of cover board 2, the welding of cover board 2.Such as
This, eliminates space and the weight of fastening screw, that is, the size for reducing product alleviates the weight of product again, and soldering is than passing
The fastening screw fixing seal of system is more preferable.Specifically, 2 place plane of cover board is parallel to each resonant rod 3 in present embodiment
Axis, to facilitate in the case where dismantling cover board 2, to being overhauled inside cavity 1.
In present embodiment, 1 bottom of cavity is additionally provided with mounting hole 9, and mounting hole 9 is threaded hole, and 9 axis of mounting hole is parallel
In on 3 extending direction of resonant rod, used with facilitating user installation and dismantling.
The above, preferable specific embodiment only of the present invention, but protection scope of the present invention not office
Be limited to this, anyone skilled in the art in the technical scope disclosed by the present invention, technology according to the present invention
Scheme and its inventive concept are subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of ultra wide band loads microwave filter characterized by comprising cavity (1) and cover board (2)；
The internal resonant rod (3) of cavity (1) is arranged using interdigital model structure, and it is equal that each resonant rod (3) is corresponded on cavity (1)
Equipped with an adjusting screw rod (4), adjusting screw rod (4) through cavities (1) is arranged and is located at the extending direction of corresponding resonant rod (3)
On；The nut (5) for locking is arranged on adjusting screw rod (4), nut (5) is located on the outside of cavity (1)；
It is located at two sides opposite on resonant rod (3) extending direction on the outside of cavity (1) and is equipped with the first groove, the equal position of each nut (5)
In the first groove (6)；
Each resonant rod (3) is equipped with loading disc (7) close to the one end of adjusting screw rod (4), and loading disc (7) covers resonant rod (3)
And it is located at perpendicular in the plane of resonant rod (3)；It is located at the both ends difference for the signal path that resonant rod (3) are constituted on cavity (1)
Equipped with the contact pin (8) for inputting or exporting for signal, loading disc (7) of two contact pins (8) respectively at signal path both ends is welded
Connection；
Cover board (2) is mounted on cavity (1), and cavity (1) and cover board (2) cooperatively form sealing structure.
2. ultra wide band as described in claim 1 loads microwave filter, which is characterized in that resonant rod (3) uses square structure.
3. ultra wide band as claimed in claim 2 loads microwave filter, which is characterized in that loading disc (7) is square structure.
4. ultra wide band as described in claim 1 loads microwave filter, which is characterized in that resonant rod (3) and cavity (1) one
Molding.
5. ultra wide band as described in claim 1 loads microwave filter, which is characterized in that plane where cover board (2) is parallel to
The axis of each resonant rod (3).
6. ultra wide band as described in claim 1 loads microwave filter, which is characterized in that be coated with asphalt mixtures modified by epoxy resin on nut (5)
Rouge.
7. ultra wide band as described in claim 1 loads microwave filter, which is characterized in that cavity (1) outside is equipped with and cover board
(2) matched second groove, cover board (2) welding are mounted in the second groove.
8. ultra wide band as described in any one of claim 1 to 7 loads microwave filter, which is characterized in that cavity (1) bottom is set
Have mounting hole (9), mounting hole (9) is threaded hole, and mounting hole (9) axis is parallel on resonant rod (3) extending direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811248257.3A CN109585990A (en) | 2018-10-25 | 2018-10-25 | A kind of ultra wide band load microwave filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811248257.3A CN109585990A (en) | 2018-10-25 | 2018-10-25 | A kind of ultra wide band load microwave filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109585990A true CN109585990A (en) | 2019-04-05 |
Family
ID=65920641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811248257.3A Pending CN109585990A (en) | 2018-10-25 | 2018-10-25 | A kind of ultra wide band load microwave filter |
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| CN (1) | CN109585990A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110875506A (en) * | 2019-12-02 | 2020-03-10 | 成都雷电微力科技有限公司 | Compact dielectric filling waveguide filter |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4053855A (en) * | 1975-10-28 | 1977-10-11 | International Telephone And Telegraph Corporation | Method and arrangement to eliminate multipacting in RF devices |
| JPS56123102A (en) * | 1980-03-04 | 1981-09-28 | Mitsubishi Electric Corp | Interdigital wave filter |
| US5428325A (en) * | 1993-12-10 | 1995-06-27 | Allen Telecom Group, Inc. | RF filters and multiplexers with resonator decouplers |
| CN101714686A (en) * | 2009-12-21 | 2010-05-26 | 成都赛纳赛德科技有限公司 | Ultra wide band cavity filter |
| CN203056062U (en) * | 2013-01-21 | 2013-07-10 | 合肥科尚电子科技有限公司 | Interdigital filter used for C-waveband electronic countermeasure system |
| CN203119069U (en) * | 2013-01-21 | 2013-08-07 | 合肥科尚电子科技有限公司 | A X-waveband cavity band-pass filter with an ultra wide band |
| 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 |
| CN203895579U (en) * | 2014-04-28 | 2014-10-22 | 合肥科尚电子科技有限公司 | Ceramic medium filter |
| CN204303955U (en) * | 2015-01-09 | 2015-04-29 | 安徽奇锦电子科技有限公司 | A kind of stepped impedance interdigital filter |
| CN206116571U (en) * | 2016-08-30 | 2017-04-19 | 常州无线电厂有限公司 | Interdigital wave filter of microwave |
-
2018
- 2018-10-25 CN CN201811248257.3A patent/CN109585990A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4053855A (en) * | 1975-10-28 | 1977-10-11 | International Telephone And Telegraph Corporation | Method and arrangement to eliminate multipacting in RF devices |
| JPS56123102A (en) * | 1980-03-04 | 1981-09-28 | Mitsubishi Electric Corp | Interdigital wave filter |
| US5428325A (en) * | 1993-12-10 | 1995-06-27 | Allen Telecom Group, Inc. | RF filters and multiplexers with resonator decouplers |
| CN101714686A (en) * | 2009-12-21 | 2010-05-26 | 成都赛纳赛德科技有限公司 | Ultra wide band cavity filter |
| CN203056062U (en) * | 2013-01-21 | 2013-07-10 | 合肥科尚电子科技有限公司 | Interdigital filter used for C-waveband electronic countermeasure system |
| CN203119069U (en) * | 2013-01-21 | 2013-08-07 | 合肥科尚电子科技有限公司 | A X-waveband cavity band-pass filter with an ultra wide band |
| 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 |
| CN203895579U (en) * | 2014-04-28 | 2014-10-22 | 合肥科尚电子科技有限公司 | Ceramic medium filter |
| CN204303955U (en) * | 2015-01-09 | 2015-04-29 | 安徽奇锦电子科技有限公司 | A kind of stepped impedance interdigital filter |
| CN206116571U (en) * | 2016-08-30 | 2017-04-19 | 常州无线电厂有限公司 | Interdigital wave filter of microwave |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110875506A (en) * | 2019-12-02 | 2020-03-10 | 成都雷电微力科技有限公司 | Compact dielectric filling waveguide filter |
| CN110875506B (en) * | 2019-12-02 | 2021-07-13 | 成都雷电微力科技股份有限公司 | Compact dielectric filling waveguide filter |
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Application publication date: 20190405 |