CN205211899U - Metal resonant cavity wave filter of embedded fluting metal sheet with low frequency zero point - Google Patents
Metal resonant cavity wave filter of embedded fluting metal sheet with low frequency zero point Download PDFInfo
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- CN205211899U CN205211899U CN201521082511.9U CN201521082511U CN205211899U CN 205211899 U CN205211899 U CN 205211899U CN 201521082511 U CN201521082511 U CN 201521082511U CN 205211899 U CN205211899 U CN 205211899U
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- metal
- line
- rabbet joint
- metal cavity
- metallic plate
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Abstract
The utility model discloses a metal resonant cavity wave filter of embedded fluting metal sheet with low frequency zero point, including metal resonant cavity, probe and SMA head, the embedded metal sheet of metal resonant cavity, it has the line of rabbet joint to open on the metal sheet. The utility model discloses a multimode of wave filter and transmission zero's position are controlled to position and the size of adjusting the line of rabbet joint on metal sheet and the metal sheet, are had smallly by the band pass filter of its design, and simple structure, handling ease, performance advantage such as good can satisfy communication system's requirement.
Description
Technical field
The utility model relates to a kind of type wire chamber filter in upright arrangement, is specifically related to a kind of Metal cavity filter with the embedded slotted metal plate at low frequency zero point.
Background technology
Microwave filter is transmitting terminal and the requisite device of receiving terminal in Modern Communication System, and it plays centrifugation to signal, allows useful signal is zero-decrement as far as possible to be passed through, and the decay large as far as possible to useless signal suppresses it to pass through.Along with the development of wireless communication technology, the frequency band between signal is more and more narrow, and this just has higher requirement to the specification of filter and reliability.Rectangular cavities filter has that high frequency selectivity, filter with low insertion loss, power capacity are large, steady performance and have very high using value.Many scholars are studied the passband that cavity body filter produces multimode, by regulating the coupling between resonator to change separation multimode, produce transmission zero, improve band general character energy further.
Utility model content
In order to overcome shortcoming that prior art exists with not enough, the utility model provides a kind of Metal cavity filter with the embedded slotted metal plate at low frequency zero point.
The purpose of this utility model proposes a kind of cavity body filter producing multiple transmission pole and transmission zero, in rectangular metal resonant cavity, embedded one piece of metallic plate, output the line of rabbet joint on a metal plate, by regulating position, the size of the line of rabbet joint on metallic plate and metallic plate, control the transmission pole of filter and the position of transmission zero.
The utility model adopts following technical scheme:
Have a Metal cavity filter for the embedded slotted metal plate at low frequency zero point, comprise probe and SMA head, also comprise Metal cavity, described Metal cavity embedded metal plate, described metallic plate has the line of rabbet joint.
The described line of rabbet joint is specially rectangle.
The described line of rabbet joint is specially three, and wherein line of rabbet joint is positioned at the midline position of metallic plate length direction, and two other is symmetrical about the center line of metallic plate length direction.
Described probe and SMA probe weld together, and concrete two groups, lay respectively at the two ends of Metal cavity for feed.
The described line of rabbet joint length being positioned at metallic plate length direction center line is greater than the two other line of rabbet joint.
Described Metal cavity and metallic plate are rectangular configuration.
The beneficial effects of the utility model:
(1) the utility model can meet the features such as miniaturization, high selectivity, high q-factor, design and processing is simple;
(2) the utility model structural volume is little, improves the bulky problem of rectangular cavities filter;
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the end view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the corresponding Electromagnetic Simulation curve of the utility model embodiment frequency.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment
There is a Metal cavity filter for the embedded slotted metal plate at low frequency zero point, comprise Metal cavity 3, described metallized metal resonant cavity 3 embedded metal plate 1, described metallic plate 1 has the line of rabbet joint 2.
As shown in Figure 1-Figure 3, Metal cavity is rectangular configuration, and its length is probably 1/2 wavelength of the centre frequency of work, and 1/4 wavelength of frequency centered by width is general, metallic plate is embedded in Metal cavity, and is connected with the front and back internal face of Metal cavity.
Described metallic plate has the line of rabbet joint, three line of rabbet joint are had in the present embodiment, article three, the line of rabbet joint is rectangle, wherein a line of rabbet joint is positioned on the center line of metallic plate length direction, and its length is equal with the width of metallic plate, the position of the two other line of rabbet joint is symmetrical about metallic plate length direction center line, and is positioned at the both sides of center line, described in be positioned at center line line of rabbet joint length be greater than the length of the two other line of rabbet joint.
The present embodiment also comprises probe 4 and SMA 5, and described probe and SMA probe weld together, and Metal cavity two sides all arrange probe and SMA head, and described probe is connected with metallic plate, for feed.
Described metallic plate and Metal cavity are made by metal material, preferably golden and silver-colored.
The course of processing of the present embodiment is as follows:
Metal cavity is cut and is divided into upper and lower cavity, and metallic plate;
Output the line of rabbet joint on a metal plate and for the screw thread of hold-down screw and the aperture of linking probe;
On lower chamber, output the screwed hole of fixing sub-miniature A connector at each near ports of input and output, output the groove of the screw thread of hold-down screw and fixed metal plate at cavity wall, output the latter half of the through hole holding probe at input/output port;
On upper cavity, output the screwed hole of fixing sub-miniature A connector at each near ports of input and output, the cavity wall of upper cavity is outputed the screwed hole corresponding to hold-down screw, and output the first half of the through hole holding probe at input/output terminal cavity wall;
Finally SMA head is welded with probe, metallic plate is embedded on the groove of lower chamber, probe is welded to metallic plate, with screw, SMA head is fixed on wire chamber, cover metal upper cavity, and with screw, upper cavity, metallic plate and lower chamber are fixed up, finally test.
As shown in Figure 4, analogous diagram illustrates that filter construction of carrying can introduce transmission zero in upper and lower stop-band, in passband, produce transmission pole.
The utility model mainly utilizes the embedded metallic plate of wire chamber to carry out controls transfer pole and zero, carrys out the coupling between control inputs coupling and each pattern by the size and position adjusting the line of rabbet joint on probe length (size of metallic plate), metallic plate.By adjusting the overall dimensions etc. of wire chamber, controlling and improving performance of filter.
Above-described embodiment is the utility model preferably execution mode; but execution mode of the present utility model is not limited by the examples; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection range of the present utility model.
Claims (6)
1. have a Metal cavity filter for the embedded slotted metal plate at low frequency zero point, comprise probe and SMA head, it is characterized in that, also comprise Metal cavity, described Metal cavity embedded metal plate, described metallic plate has the line of rabbet joint.
2. Metal cavity filter according to claim 1, is characterized in that, the described line of rabbet joint is specially rectangle.
3. Metal cavity filter according to claim 1, is characterized in that, the described line of rabbet joint is specially three, and wherein line of rabbet joint is positioned at the midline position of metallic plate length direction, and two other is symmetrical about the center line of metallic plate length direction.
4. Metal cavity filter according to claim 1, is characterized in that, described probe and SMA probe weld together, and concrete two groups, lay respectively at the two ends of Metal cavity for feed.
5. Metal cavity filter according to claim 3, is characterized in that, described in be positioned at metallic plate length direction center line line of rabbet joint length be greater than the two other line of rabbet joint.
6. Metal cavity filter according to claim 1, is characterized in that, described Metal cavity and metallic plate are rectangular configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521082511.9U CN205211899U (en) | 2015-12-21 | 2015-12-21 | Metal resonant cavity wave filter of embedded fluting metal sheet with low frequency zero point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521082511.9U CN205211899U (en) | 2015-12-21 | 2015-12-21 | Metal resonant cavity wave filter of embedded fluting metal sheet with low frequency zero point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205211899U true CN205211899U (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521082511.9U Expired - Fee Related CN205211899U (en) | 2015-12-21 | 2015-12-21 | Metal resonant cavity wave filter of embedded fluting metal sheet with low frequency zero point |
Country Status (1)
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|---|---|
| CN (1) | CN205211899U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428765A (en) * | 2015-12-21 | 2016-03-23 | 华南理工大学 | Metal resonant cavity filter embedded with slotted metal plate with low-frequency zero point |
| CN106785274A (en) * | 2017-01-17 | 2017-05-31 | 华南理工大学 | A kind of bandpass filter based on three-ply metal structure |
| CN108808192A (en) * | 2018-08-31 | 2018-11-13 | 苏州市江海通讯发展实业有限公司 | A kind of embedded cavity body filter of pin type |
-
2015
- 2015-12-21 CN CN201521082511.9U patent/CN205211899U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428765A (en) * | 2015-12-21 | 2016-03-23 | 华南理工大学 | Metal resonant cavity filter embedded with slotted metal plate with low-frequency zero point |
| CN105428765B (en) * | 2015-12-21 | 2019-05-14 | 华南理工大学 | A kind of Metal cavity filter of the embedded slotted metal plate with low frequency zero point |
| CN106785274A (en) * | 2017-01-17 | 2017-05-31 | 华南理工大学 | A kind of bandpass filter based on three-ply metal structure |
| CN108808192A (en) * | 2018-08-31 | 2018-11-13 | 苏州市江海通讯发展实业有限公司 | A kind of embedded cavity body filter of pin type |
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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: 20160504 Termination date: 20181221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |