CN107623158A - A kind of Ku band broadbands interdigital filter - Google Patents
A kind of Ku band broadbands interdigital filter Download PDFInfo
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- CN107623158A CN107623158A CN201710794302.4A CN201710794302A CN107623158A CN 107623158 A CN107623158 A CN 107623158A CN 201710794302 A CN201710794302 A CN 201710794302A CN 107623158 A CN107623158 A CN 107623158A
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- conductor
- cover plate
- resonator
- resonant rod
- resonant
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Abstract
The invention discloses a kind of Ku band broadbands interdigital filter, including conductor seat, conductor cover plate, seven resonant rods, four tuning screws, three conductor columns and six coupling windows, seven resonators are provided with along conductor seat top surface long axis direction interval, conductor cover plate is fixed on conductor seat top surface；Resonant rod is equipped with each resonator, wherein the resonant rod in the resonator at four intervals is vertically fixed on resonator bottom center, is touched with conductor seated connection and forms short circuit；The resonant rod of remaining three resonators is fixed on conductor cover plate, contacts to form short circuit with the plane perpendicular of conductor cover plate；Four tuning screws are correspondingly stretched into the resonator at four intervals through conductor cover plate and are tuned, and remaining three resonator bottom center are respectively equipped with conductor column；Coupling window is provided between two adjacent resonators.The present invention realizes broadband and high frequency selectivity using interdigitated structure, opens coupling window and makes the wave filter of high exponent number compacter, reaches miniaturization.
Description
Technical field
The invention belongs to cavity body filter technology, and in particular to a kind of Ku band broadbands interdigital filter.
Technical background
Cavity body filter is to defend communication system, the important component of radar system.It is interdigitated compared to dressing cavity body filter
Cavity body filter can realize broader bandwidth, smaller loss, and stopband suppresses higher.Tan little Hua discloses one kind within 2013《Take out
The design of hair style interdigitated cavity wave filter》, by HFSS Electromagnetic Simulations, using the interdigitated structure of 11 ranks, realize 8GHz-
10GHz bandwidth, does not use tuning screw, reduces debugging work load, also shortens the lead time.But employed high-order
Several structures, causes bigger Insertion Loss, also allows the length of wave filter long.Also do not cause result in kind tight using tuning screw
Again dependent on processing.
Compact-sized, miniaturization is wave filter design important goal, and coupling between resonant rod can be weakened by holding coupling window, but
It is for the moderate wave filter of bandwidth, allows resonant rod is close to each other can still obtain required coupling amount, this way not only structure
Simply, and cavity body filter structure can be allowed compacter.Tuning screw only is used in cover plate, had both reached and has possessed certain tune
Space is tried, reduces the effect of debugging amount again.
The content of the invention
It is an object of the invention to provide a kind of Ku band broadbands interdigital filter, and broadband is realized using interdigitated structure
With high frequency selectivity, open coupling window and make the wave filter of high exponent number compacter, reach miniaturization.
The technical solution for realizing the object of the invention is：A kind of Ku band broadbands interdigital filter, including conductor seat,
Conductor cover plate, seven resonant rods, four tuning screws, three conductor columns and six coupling windows, the conductor seat are cuboid,
Seven resonators are provided with along top surface long axis direction interval, conductor cover plate is fixed on conductor seat top surface；One is provided with each resonator
Individual resonant rod, the resonant rod are cuboid, and are conductor, wherein the resonant rod in the 1st, 3,5 and 7 resonator is vertically fixed
In resonator bottom center, touched with conductor seated connection and form short circuit；The resonant rod of 2nd, 4 and 6 resonator is fixed on conductor cover plate
On, contact to form short circuit with the plane perpendicular of conductor cover plate；Four tuning screws correspondingly stretch into the 1st through conductor cover plate, 3,5 and
It is tuned in 7 resonators, and the axis of tuning screw overlaps with the axis of corresponding resonant rod respectively；2nd, 4 and 6
Resonator bottom center is respectively equipped with conductor column, and the axis of the conductor column corresponds to resonant rod with conductor cover plate respectively
Axis overlap；Coupling window is provided between two adjacent resonators, coupling window is positioned at the middle of two resonant rods.
Compared with prior art, the present invention has the following advantages：（1）It is simple in construction, easy processing, it need to only adjust on conductor cover plate
Tuning screw, reduce the number of tuning screw；Coupling screws are not adjusted, greatly reduce debugging amount；（2）Utilize coupling window
Weaken the effect of coupling, make resonant rod close to each other, make structure compacter；（3）Realized more using the wave filter of higher order number
High Out-of-band rejection, the wave filter that volume ratio low order is not added with coupling window is smaller, and implementation is simple.
Brief description of the drawings
Fig. 1 is the structural representation of the Ku band broadband interdigital filters of the present invention.
Fig. 2 is the conductor cover plate schematic diagram of the Ku band broadband interdigital filters of the present invention.
Embodiment
With reference to Fig. 1 and Fig. 2, a kind of Ku band broadbands interdigital filter, including conductor seat 1, conductor cover plate 2, seven are humorous
Shake 3, four, bar, 5, six coupling windows 6 of the conductor column of tuning screw 4, three and several trip bolts 7, the conductor seat 1 are
Cuboid, seven resonators are provided with along top surface long axis direction interval, conductor cover plate 2 is fixed on conductor seat 1 by trip bolt 7 and pushed up
Face, conductor seat 1 is sealed.A resonant rod 3 is provided with each resonator, the resonant rod 3 is cuboid, and to lead
Body, wherein the resonant rod 3 in the 1st, 3,5 and 7 resonator is vertically fixed on resonator bottom center, shape is contacted with conductor seat 1
Into short circuit；The resonant rod 3 of 2nd, 4 and 6 resonator is fixed on conductor cover plate 2, and shape is contacted with the plane perpendicular of conductor cover plate 2
Into short circuit；Four tuning screws 4 are tuned through corresponding stretch into the 1st, 3,5 and 7 resonator of conductor cover plate 2, and are tuned
The axis of screw 4 overlaps with the axis of corresponding resonant rod 3 respectively；2nd, 4 and 6 resonator bottom center is respectively equipped with and led
Body cylinder 5, the axis of the conductor column 5 correspond to the axis coincidence of resonant rod 3 with conductor cover plate 2 respectively.Adjacent
Coupling window 6 is provided between two resonators, coupling window 6 is big by window positioned at the middle of two resonant rods 3, the size of coupling amount
The distance of two small and adjacent resonant rods 3 together decides on.The presence of coupling window 6 causes coupling amount to reduce, and resonant rod 3 needs phase
It is mutually close so that compact overall structure.Overall structure is symmetrical on the resonator in centre position, it is not necessary to using coupling screws.
Conductor seat 1 is conductor, can use duralumin, brass etc..
The resonant rod 3 is cuboid, and its length is less than the quarter-wave of working frequency.
The resonance cavity wall, the bottom surface of conductor cover plate 2, the outer wall of conductor column 5, the outer wall of resonant rod 3 are silver-plated.
The advantage of the invention is that simple in construction, easy processing, need to only adjust the tuning screw 4 on conductor cover plate 2, reduce
The number of tuning screw 4；Coupling screws are not adjusted, greatly reduce debugging amount.Weaken the effect of coupling using coupling window 6, allow
Resonant rod 3 is close to each other, makes structure compacter.Higher Out-of-band rejection, volume ratio are realized using the wave filter of higher order number
The wave filter that low order is not added with coupling window is smaller, and implementation is simple.
Claims (3)
- A kind of 1. Ku band broadbands interdigital filter, it is characterised in that：Including conductor seat（1）, conductor cover plate（2）, seven it is humorous Shake bar（3）, four tuning screws（4）, three conductor columns（5）With six coupling windows（6）, the conductor seat（1）For cuboid, Seven resonators, conductor cover plate are provided with along top surface long axis direction interval（2）It is fixed on conductor seat（1）Top surface；In each resonator It is equipped with a resonant rod（3）, the resonant rod（3）For cuboid, and it is conductor, wherein in the 1st, 3,5 and 7 resonator Resonant rod（3）Resonator bottom center is vertically fixed on, with conductor seat（1）Contact forms short circuit；2nd, 4 and 6 resonator Resonant rod（3）It is fixed on conductor cover plate（2）On, with conductor cover plate（2）Plane perpendicular contact to form short circuit；Four tuning screws （4）Through conductor cover plate（2）Corresponding stretch into the 1st, 3,5 and 7 resonator is tuned, and tuning screw（4）Axis Respectively with corresponding resonant rod（3）Axis overlap；2nd, 4 and 6 resonator bottom center is respectively equipped with conductor column（5）, The conductor column（5）Axis respectively with conductor cover plate（2）Upper corresponding resonant rod（3）Axis overlap；Adjacent two Coupling window is provided between individual resonator（6）, coupling window（6）Positioned at two resonant rods（3）Middle.
- 2. Ku band broadbands interdigital filter according to claim 1, it is characterised in that：The resonant rod（3）For length Cube, its length are less than the quarter-wave of working frequency.
- 3. Ku band broadbands interdigital filter according to claim 1, it is characterised in that：The resonance cavity wall, lead Body cover plate（2）Bottom surface, conductor column（5）Outer wall, resonant rod（3）Outer wall is silver-plated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710794302.4A CN107623158A (en) | 2017-09-06 | 2017-09-06 | A kind of Ku band broadbands interdigital filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710794302.4A CN107623158A (en) | 2017-09-06 | 2017-09-06 | A kind of Ku band broadbands interdigital filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107623158A true CN107623158A (en) | 2018-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710794302.4A Pending CN107623158A (en) | 2017-09-06 | 2017-09-06 | A kind of Ku band broadbands interdigital filter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019153957A1 (en) * | 2018-02-12 | 2019-08-15 | 香港凡谷发展有限公司 | Multi-mode mixed cavity structure applied to filter |
| CN110676547A (en) * | 2019-10-12 | 2020-01-10 | 南京理工大学 | Ku wave band interdigital cavity filter |
| CN114079137A (en) * | 2020-08-12 | 2022-02-22 | 布鲁克碧奥斯平有限公司 | Microwave coupling device for iris aperture comprising a plurality of conductor loops |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1112296A (en) * | 1995-03-15 | 1995-11-22 | 福建省邮电科学研究所 | Microwave interdigitated low-resistance filter |
| CN102544650A (en) * | 2012-01-05 | 2012-07-04 | 西安电子科技大学 | Coaxial resonant cavity mixed coupling method |
-
2017
- 2017-09-06 CN CN201710794302.4A patent/CN107623158A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1112296A (en) * | 1995-03-15 | 1995-11-22 | 福建省邮电科学研究所 | Microwave interdigitated low-resistance filter |
| CN102544650A (en) * | 2012-01-05 | 2012-07-04 | 西安电子科技大学 | Coaxial resonant cavity mixed coupling method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019153957A1 (en) * | 2018-02-12 | 2019-08-15 | 香港凡谷发展有限公司 | Multi-mode mixed cavity structure applied to filter |
| CN110676547A (en) * | 2019-10-12 | 2020-01-10 | 南京理工大学 | Ku wave band interdigital cavity filter |
| CN114079137A (en) * | 2020-08-12 | 2022-02-22 | 布鲁克碧奥斯平有限公司 | Microwave coupling device for iris aperture comprising a plurality of conductor loops |
| CN114079137B (en) * | 2020-08-12 | 2023-02-10 | 布鲁克碧奥斯平有限公司 | Microwave coupling device for iris aperture comprising a plurality of conductor loops |
| US11914010B2 (en) | 2020-08-12 | 2024-02-27 | Bruker Biospin Gmbh | Microwave coupling device for iris apertures, comprising a plurality of conductor loops |
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Application publication date: 20180123 |
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| RJ01 | Rejection of invention patent application after publication |