CN201601203U - Ultra wide band cavity filter - Google Patents
Ultra wide band cavity filter Download PDFInfo
- Publication number
- CN201601203U CN201601203U CN2009203513032U CN200920351303U CN201601203U CN 201601203 U CN201601203 U CN 201601203U CN 2009203513032 U CN2009203513032 U CN 2009203513032U CN 200920351303 U CN200920351303 U CN 200920351303U CN 201601203 U CN201601203 U CN 201601203U
- Authority
- CN
- China
- Prior art keywords
- wide band
- ultra wide
- cavity
- metal column
- cavity filter
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The utility model discloses an ultra wide band cavity filter, belonging to the field of microwave communication, mainly overcoming the defects in bandwidth and insertion loss of the filter in the prior art. The ultra wide band cavity filter comprises a cavity, resonance metal posts arranged inside the cavity, and two input-output structures arranged on the outer wall of the cavity; the ultra wide band cavity filter is characterized in that at least two resonance metal posts are available; the two input-output structures are respectively provided with an inner conductor entering the cavity; and the front end of each inner conductor extends into one resonance metal post. The ultra wide band cavity filter is simple in structure and convenient for processing and installing, and has high use value.
Description
Technical field
The utility model relates to a kind of filter, specifically, relates to a kind of ultra wide band cavity filter.
Background technology
Ultra-wideband communications is one of emphasis of present academia and industrial quarters research.Ultra-wideband communications need use ultra broadband filtering, specifically, be that a kind of relative bandwidth of requirement surpasses 20%, in the band Insertion Loss less than 1dB, the parasitic passband ultra-wide band filters beyond 2 times of passband central frequencies.Existing ultra-wide band filter mostly adopts microstrip structure, exists not enough aspect Insertion Loss and parasitic passband.
The utility model content
The purpose of this utility model provides a kind of ultra wide band cavity filter, solves the deficiencies in the prior art, is realizing reducing to be with interior Insertion Loss on the basis that filter bandwidht increases.
To achieve these goals, the technical solution adopted in the utility model may further comprise the steps:
Ultra wide band cavity filter, comprise cavity, be arranged at the resonance metal column in the cavity, and be arranged at two input/output structures on the cavity, it is characterized in that, described resonance metal column is at least two, be respectively equipped with an inner wire that enters cavity on described two input/output structures, the front end of each inner wire extends into a resonance metal column inside.
Establish groove in the described resonance metal column that includes inner wire, the front end of inner wire extends in the groove.
Described groove is cylindrical.
The front end of described inner wire also is provided with the coupling metal column.
Described coupling metal column is cylindrical.
Insulate between described coupling metal column and the resonance metal column.
Be provided with the gap between described coupling metal column and the recess sidewall.
All resonance metal columns only are connected with cavity top or bottom.
All resonance metal columns are cuboid, and they all equate with the vertical cross-sectional width of the filter longitudinal axis.
Principle of the present utility model: utilize the inner wire that increases to insert in the resonance metal column, increase the coupling between input/output structure and the resonant element, thereby increase the bandwidth of filter; Compare with microstrip filter, Insertion Loss is reduced greatly in the band.And the comb filter or the interdigital filter structure that adopt also have parasitic passband characteristics far away, have the outer suppression characteristic of better band than microstrip filter.
The utility model design is ingenious, simple in structure, and processing, easy for installation is mainly used in the microwave communication field.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Embodiment
Embodiment
As shown in Figure 1, ultra wide band cavity filter, comprise cavity 1, be arranged at the resonance metal column 2 in the cavity 1, and be arranged at two input/output structures 3 on the cavity 1, described resonance metal column is the six roots of sensation, be respectively equipped with an inner wire that enters cavity 1 on described two input/output structures 3, the front end of each inner wire extends into resonance metal column 2 inside.
Establish cylinder shape groove 5 in the described resonance metal column 2 that includes inner wire, the front end of inner wire extends in the groove 5.
The front end of described inner wire also is provided with columniform coupling metal column 4, and is all gapped between the sidewall of itself and groove 5, the bottom surface.Coupling metal column 4 is wrapped in the front end of inner wire, and and inner wire between insulate.
In all resonance metal columns 2, have four to be connected with cavity 1 bottom, other two are connected with cavity 1 top.
All resonance metal columns 2 are cuboid, and they all equate with the vertical cross-sectional width of the filter longitudinal axis.
Can understand that from the knowledge of filter the realization of broadband filter need strengthen between input/output structure and resonant element and the resonant element and is coupled.Wherein, the stiffness of coupling between input/output structure and its coupling unit that closes on requires the highest.The purpose of this utility model is to increase the coupling between input/output structure and the resonance structure.Existing comb filter or interdigital filter are arranged in the next door of resonance metal column with the coupling metal column on the inner wire of input/output structure and top thereof, and the coupling between the two is limited, makes the bandwidth of such filter be restricted.The present invention is inserted in the resonance metal column by the inner wire with input/output structure, makes the coupling between the two reach enhancing, thereby reaches the purpose of the bandwidth that increases filter.
In addition, compare with microstrip filter, Insertion Loss reduces greatly.
Simultaneously, between the resonance metal column, or between the inner wire of input/output structure and the resonance metal column, can increase dielectric material, with the bandwidth of further increase filter.
The utility model can be used as low pass filter, high pass filter or ultra-wide band filter, is widely used in various communication systems and the radar system.
Claims (9)
1. ultra wide band cavity filter, comprise cavity (1), be arranged at the resonance metal column (2) in the cavity (1), and be arranged at two input/output structures (3) on the cavity (1), it is characterized in that, described resonance metal column (2) is at least two, be respectively equipped with an inner wire that enters cavity (1) on described two input/output structures (3), the front end of each inner wire extends into a resonance metal column (2) inside.
2. ultra wide band cavity filter according to claim 1 is characterized in that, establishes groove (5) in the described resonance metal column (2) that includes inner wire, and the front end of inner wire extends in the groove (5).
3. ultra wide band cavity filter according to claim 2 is characterized in that, described groove (5) is cylindrical.
4. ultra wide band cavity filter according to claim 2 is characterized in that, the front end of described inner wire also is provided with coupling metal column (4).
5. ultra wide band cavity filter according to claim 4 is characterized in that, described coupling metal column (4) is cylindrical.
6. ultra wide band cavity filter according to claim 4 is characterized in that, insulation between described coupling metal column (4) and the resonance metal column (2).
7. ultra wide band cavity filter according to claim 4 is characterized in that, is provided with the gap between described coupling metal column (4) and groove (5) sidewall.
8. ultra wide band cavity filter according to claim 1 is characterized in that, all resonance metal columns (2) only are connected with cavity (1) top or bottom.
9. ultra wide band cavity filter according to claim 1 is characterized in that, all resonance metal columns (2) are cuboid, and they all equate with the vertical cross-sectional width of the filter longitudinal axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203513032U CN201601203U (en) | 2009-12-21 | 2009-12-21 | Ultra wide band cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203513032U CN201601203U (en) | 2009-12-21 | 2009-12-21 | Ultra wide band cavity filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201601203U true CN201601203U (en) | 2010-10-06 |
Family
ID=42812267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203513032U Expired - Fee Related CN201601203U (en) | 2009-12-21 | 2009-12-21 | Ultra wide band cavity filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201601203U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306858A (en) * | 2011-06-23 | 2012-01-04 | 成都赛纳赛德科技有限公司 | Low pass filter with cross coupling |
| CN110197941A (en) * | 2018-02-26 | 2019-09-03 | 上海诺基亚贝尔股份有限公司 | Resonator device, filter and communication equipment |
| CN114497938A (en) * | 2022-01-26 | 2022-05-13 | 中国电子科技集团公司第十三研究所 | Microstrip filter and preparation method thereof |
-
2009
- 2009-12-21 CN CN2009203513032U patent/CN201601203U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306858A (en) * | 2011-06-23 | 2012-01-04 | 成都赛纳赛德科技有限公司 | Low pass filter with cross coupling |
| CN102306858B (en) * | 2011-06-23 | 2013-11-06 | 成都赛纳赛德科技有限公司 | Low pass filter with cross coupling |
| CN110197941A (en) * | 2018-02-26 | 2019-09-03 | 上海诺基亚贝尔股份有限公司 | Resonator device, filter and communication equipment |
| CN110197941B (en) * | 2018-02-26 | 2021-07-16 | 上海诺基亚贝尔股份有限公司 | Resonator device, filter and communication apparatus |
| CN114497938A (en) * | 2022-01-26 | 2022-05-13 | 中国电子科技集团公司第十三研究所 | Microstrip filter and preparation method thereof |
| CN114497938B (en) * | 2022-01-26 | 2023-11-07 | 中国电子科技集团公司第十三研究所 | Microstrip filter and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102064786B (en) | Band-pass filter | |
| CN203300776U (en) | Communication cavity device and low-pass filtering path | |
| CN103378388A (en) | Coaxial wide-band filter | |
| CN201601203U (en) | Ultra wide band cavity filter | |
| CN103972615B (en) | Novel low pass filtering access and adopt its communication cavity device | |
| CN203260696U (en) | TM mode dielectric filter | |
| CN107579321B (en) | Branch knot loading coaxial cavity harmonic suppression filter | |
| CN102832429A (en) | Coaxial cavity filter | |
| CN210111012U (en) | High-pass filter and communication cavity device with same | |
| CN101714686A (en) | Ultra wide band cavity filter | |
| CN203895577U (en) | Band pass filter based on one third equilateral triangle substrate integration waveguide | |
| CN203895578U (en) | Filter loading electric field by using coaxial cavity gradually changing spiral tubes | |
| CN101986459B (en) | Combiner for ultra-wideband wireless communication | |
| CN202839917U (en) | Low-frequency wide-band high-power band pass filter | |
| CN202797233U (en) | High-frequency directional coupler | |
| CN207624881U (en) | Cavity body filter and communication equipment | |
| CN210489790U (en) | Alternating short circuit branch high-pass filter | |
| CN201725859U (en) | Open-loop coupling bandpass filter based on micro-strip interdigital capacitor | |
| CN103545580A (en) | Miniaturized adjustable band stop filter | |
| CN203039077U (en) | Coaxial resonator with phase step structure | |
| CN202550044U (en) | Band-stop filter based on coaxial cavities | |
| CN102623776A (en) | Coaxial cavity-based rejection filter | |
| CN201655940U (en) | Folded filter | |
| CN201877547U (en) | Asymmetric regular coupling cascade filter capable of realizing good harmonic suppression response | |
| CN106848515B (en) | Integrated filter system and antenna system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101006 Termination date: 20151221 |
|
| EXPY | Termination of patent right or utility model |