CN101604783A - Compact type microwave cavity - Google Patents
Compact type microwave cavity Download PDFInfo
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- CN101604783A CN101604783A CNA200910059247XA CN200910059247A CN101604783A CN 101604783 A CN101604783 A CN 101604783A CN A200910059247X A CNA200910059247X A CN A200910059247XA CN 200910059247 A CN200910059247 A CN 200910059247A CN 101604783 A CN101604783 A CN 101604783A
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- dividing plate
- coupling aperture
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Abstract
The invention discloses a kind of compact type microwave cavity, comprise upper cover plate, cavity, lower cover, resonance metal column and input and output coupling aperture, upper cover plate and lower cover are provided with respectively on the upper and lower surfaces of cavity, the input and output coupling aperture is arranged on the cavity side, it is characterized in that, be provided with a dividing plate in the described cavity, cavity is divided into two parts up and down by dividing plate, the resonance metal column is arranged in the lower part of cavity, also is provided with the metal column at zero point in the top of cavity.The present invention not only has flexible design, simple in structure, easy to process, the high characteristics of the outer inhibition of band, the position at control transmission zero point well simultaneously, regulate resonance frequency well, be mainly used in the electronic system of each microwave band, particularly military affairs and civil areas such as radar, missile guidance, communication.
Description
Technical field
The present invention relates to a kind of microwave cavity, specifically, relate to a kind of compact type microwave cavity that has transmission zero.
Background technology
At present, direct-coupled cavity filter and coaxial cavity waveguide filter are most widely used waveguide filters.In order to improve the selectivity of filter on stopband, present waveguide filter often adopts the progression that increases filter, adds methods such as short branch in the waveguide outside.All there is shortcoming separately in these two kinds of methods commonly used: preceding a kind of method has not only increased the volume of filter, but also can increase Insertion Loss; Then a kind of method will increase the volume and weight of filter, and this shortcoming is especially outstanding when low-frequency range, because the length of short branch is approximately the quarter-wave guide wavelength.
Summary of the invention
The object of the present invention is to provide a kind of compact type microwave device, in order to constitute filter be, volume that can reduction of device reduces difficulty of processing.
To achieve these goals, the technical solution used in the present invention is:
A kind of compact type microwave cavity, comprise upper cover plate, cavity, lower cover, resonance metal column and input and output coupling aperture, upper cover plate and lower cover are provided with respectively on the upper and lower surfaces of cavity, the input and output coupling aperture is arranged on the cavity side, it is characterized in that, be provided with a dividing plate in the described cavity, cavity is divided into two parts up and down by dividing plate, the resonance metal column is arranged in the lower part of cavity, also is provided with the metal column at zero point in the top of cavity.
Described zero point, the metal column bottom linked to each other with dividing plate, and the top is unsettled.
Described resonance metal column top links to each other with dividing plate, and the bottom is unsettled.
Also be provided with coupling aperture on the described dividing plate, be communicated with by coupling aperture two parts up and down with cavity.
Described zero point, metal column was used to regulate the frequency of resonant cavity transmission zero.
Described resonance metal column is used to regulate the resonance frequency of resonant cavity.
The shape of the coupling aperture between the upper and lower part of described cavity can be rectangle, circle, ellipse or other polygon.
The present invention is by being divided into two cavity, and metal column and resonance metal column at zero point is set respectively in two parts up and down of cavity, thereby realizes a transmission zero, the volume of reduction of device and difficulty of processing greatly in a cavity.By adjust metal column height at zero point in the cavity, length, width with and position on dividing plate, the position at control transmission zero point well; Height by adjusting cavity interior resonance metal column, length, width with and position on dividing plate, can control resonance frequency well.By changing the size of input and output coupling aperture, can control the coupling amount of input/output structure, bandwidth that can control filters when constituting filter.
Compared with prior art, the present invention has the following advantages:
One. under the lower situation of frequency, employing the present invention is littler than common short branch filter volume as the filter that resonant element constitutes, weight is lighter.
Two. adopt the present invention better as the outer common direct-coupled cavity filter of rejection ratio of filter band that resonant element constitutes.
Three. adopt the present invention easier than cross-couplings cavity filter structure, make more flexibly, process more convenient as the filter that resonant element constitutes.
Four. this resonant cavity has increased the number of design parameter, makes design more flexible, is easier to regulate the position of transmission zero.
The present invention can be widely used in the electronic system of each microwave band, particularly military affairs and civil areas such as radar, missile guidance, communication.
Description of drawings
Fig. 1 is the structural representation of the present invention-embodiment one.
Fig. 2 is the A-A profile of Fig. 1.
Fig. 3 is the structural representation of the present invention-embodiment two.
Embodiment
Embodiment one
As shown in Figure 1 and Figure 2, compact type microwave cavity, comprise upper cover plate 1, cavity 2, lower cover 3, resonance metal column 4 and input and output coupling aperture 7, upper cover plate 1 and lower cover 3 are arranged on the upper and lower surfaces of cavity 2, input and output coupling aperture 7 is arranged on cavity 2 sides, it is characterized in that, also be provided with a dividing plate 8 in the inside of cavity 2, dividing plate 8 is divided into two parts up and down with cavity 2.The resonance metal column is arranged at the lower part of cavity 2, and its top links to each other with dividing plate, is used to regulate the resonance frequency of resonant cavity; Also be provided with metal column 5 at zero point in the top of cavity 2, zero point, metal column 5 bottom linked to each other with dividing plate 8, was used to regulate the frequency of resonant cavity transmission zero.Between a sidewall of dividing plate 8 and cavity 2, also be provided with a coupling aperture 6, be communicated with by coupling aperture 6 two parts up and down with cavity 2.Input and output coupling aperture 7 is used for linking to each other with other resonant cavity or microwave device.
Processing of the present invention is very simple, only needs this resonant cavity is divided into upper cover plate, and cavity and lower cover three parts are carried out milling respectively, at last three parts is got final product by the screw combination is fixing.
This compact resonant cavity is particularly useful for the making of devices such as filter, duplexer.Not only can mix use with the resonant cavity and the coupled structure of other type, and can satisfy higher frequency with less exponent number and select index, has smaller volume satisfying under the situation of identical index in other words, make device miniaturization, thereby alleviate the weight of entire device, reduce the Insertion Loss of device, can also reduce the influence of waveguide filter parasitic passband simultaneously.
Embodiment two
As shown in Figure 3, embodiment two is with the difference of embodiment 1, the position difference of coupling aperture 6, and other structures are all identical.Coupling aperture 6 is between dividing plate 8 and 2 one sidewalls of cavity among the embodiment one, and coupling aperture 6 is positioned on the dividing plate 8 in the present embodiment.
Claims (5)
1, compact type microwave cavity, comprise upper cover plate (1), cavity (2), lower cover (3), resonance metal column (4) and input and output coupling aperture (7), upper cover plate (1) and lower cover (3) are provided with respectively on the upper and lower surfaces of cavity (2), input and output coupling aperture (7) is arranged on cavity (2) side, it is characterized in that, be provided with a dividing plate (8) in the described cavity (2), by dividing plate (8) cavity (2) is divided into two parts up and down, resonance metal column (4) is arranged in the lower part of cavity (2), also is provided with metal column at zero point (5) in the top of cavity (2).
2, compact type microwave cavity according to claim 1 is characterized in that, described metal column at zero point (5) bottom links to each other with dividing plate (8), and the top is unsettled.
3, compact type microwave cavity according to claim 1 is characterized in that, described resonance metal column (4) top links to each other with dividing plate (8), and the bottom is unsettled.
4, compact type microwave cavity according to claim 1 is characterized in that, also is provided with coupling aperture (6) on the described dividing plate (8), is communicated with by coupling aperture (6) two parts up and down with cavity (2).
5, compact type microwave cavity according to claim 1 is characterized in that, in the centre frequency of this resonant cavity passband, microwave is cut-off state in the rectangular waveguide identical with this resonant cavity width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910059247XA CN101604783A (en) | 2009-05-12 | 2009-05-12 | Compact type microwave cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910059247XA CN101604783A (en) | 2009-05-12 | 2009-05-12 | Compact type microwave cavity |
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| Publication Number | Publication Date |
|---|---|
| CN101604783A true CN101604783A (en) | 2009-12-16 |
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| CNA200910059247XA Pending CN101604783A (en) | 2009-05-12 | 2009-05-12 | Compact type microwave cavity |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102683780A (en) * | 2011-11-15 | 2012-09-19 | 广东工业大学 | Multi-cavity filter taking coupled dual-gap cavity |
| WO2013023423A1 (en) * | 2011-08-16 | 2013-02-21 | 深圳光启高等理工研究院 | Resonant cavity and filter having same |
| CN108051133A (en) * | 2017-12-04 | 2018-05-18 | 中国电子科技集团公司第四十研究所 | A kind of dual resonant cavity pressure testing system and method based on microwave collimation technique |
| CN109004328A (en) * | 2018-08-01 | 2018-12-14 | 中国科学院苏州纳米技术与纳米仿生研究所 | Resonator based on full composite board cavity |
| CN109004329A (en) * | 2018-08-01 | 2018-12-14 | 中国科学院苏州纳米技术与纳米仿生研究所 | Resonator based on all-metal plate resonant cavity |
| CN109103559A (en) * | 2018-08-01 | 2018-12-28 | 中国科学院苏州纳米技术与纳米仿生研究所 | resonator |
-
2009
- 2009-05-12 CN CNA200910059247XA patent/CN101604783A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013023423A1 (en) * | 2011-08-16 | 2013-02-21 | 深圳光启高等理工研究院 | Resonant cavity and filter having same |
| CN102683780A (en) * | 2011-11-15 | 2012-09-19 | 广东工业大学 | Multi-cavity filter taking coupled dual-gap cavity |
| CN108051133A (en) * | 2017-12-04 | 2018-05-18 | 中国电子科技集团公司第四十研究所 | A kind of dual resonant cavity pressure testing system and method based on microwave collimation technique |
| CN109004328A (en) * | 2018-08-01 | 2018-12-14 | 中国科学院苏州纳米技术与纳米仿生研究所 | Resonator based on full composite board cavity |
| CN109004329A (en) * | 2018-08-01 | 2018-12-14 | 中国科学院苏州纳米技术与纳米仿生研究所 | Resonator based on all-metal plate resonant cavity |
| CN109103559A (en) * | 2018-08-01 | 2018-12-28 | 中国科学院苏州纳米技术与纳米仿生研究所 | resonator |
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Application publication date: 20091216 |