CN105428765A - Metal resonant cavity filter embedded with slotted metal plate with low-frequency zero point - Google Patents
Metal resonant cavity filter embedded with slotted metal plate with low-frequency zero point Download PDFInfo
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- CN105428765A CN105428765A CN201510974417.2A CN201510974417A CN105428765A CN 105428765 A CN105428765 A CN 105428765A CN 201510974417 A CN201510974417 A CN 201510974417A CN 105428765 A CN105428765 A CN 105428765A
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- metal
- line
- metal cavity
- rabbet joint
- metallic plate
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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
The invention discloses a metal resonant cavity filter embedded with a slotted metal plate with a low-frequency zero point. The metal resonant cavity filter comprises a metal resonant cavity, probes and SMA heads, wherein the metal plate is embedded into the metal resonant cavity; and trough lines are formed on the metal plate. The positions of multi-modes and transmission zeros of the filter are controlled by adjusting the positions and the sizes of the metal plate and the trough lines on the metal plate. The designed band-pass filter has the advantages of being small in size, simple in structure, easy to process, good in performance and the like, and can meet the requirements of a communication system.
Description
Technical field
The present invention relates to a kind of type wire chamber filter in upright arrangement, be 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.
Summary of the invention
In order to overcome shortcoming that prior art exists with not enough, the invention provides a kind of Metal cavity filter with the embedded slotted metal plate at low frequency zero point.
The object of the invention is to propose 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 present invention 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.
Beneficial effect of the present invention:
(1) the present invention can meet the features such as miniaturization, high selectivity, high q-factor, design and processing is simple;
(2) structural volume of the present invention is little, improves the bulky problem of rectangular cavities filter;
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
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 embodiment of the present invention frequency.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are 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 present invention 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 present invention's preferably execution mode; but embodiments of the present invention are not limited by the examples; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
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 |
|---|---|---|---|
| CN201510974417.2A CN105428765B (en) | 2015-12-21 | 2015-12-21 | A kind of Metal cavity filter of the embedded slotted metal plate with low frequency zero point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510974417.2A CN105428765B (en) | 2015-12-21 | 2015-12-21 | A kind of Metal cavity filter of the embedded slotted metal plate with low frequency zero point |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105428765A true CN105428765A (en) | 2016-03-23 |
| CN105428765B CN105428765B (en) | 2019-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510974417.2A Expired - Fee Related CN105428765B (en) | 2015-12-21 | 2015-12-21 | A kind of Metal cavity filter of the embedded slotted metal plate with low frequency zero point |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654539A (en) * | 2017-01-18 | 2017-05-10 | 华南理工大学 | Filtering antenna based on metal integrated structure |
| CN106684512A (en) * | 2017-01-18 | 2017-05-17 | 华南理工大学 | Duplexing antenna based on metal integrated structure |
| 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 |
| CN108123194A (en) * | 2016-11-30 | 2018-06-05 | 凯镭思通讯设备（上海）有限公司 | A kind of thin-walled stretches cavity body filter and production method |
| CN108232434A (en) * | 2017-12-15 | 2018-06-29 | 华南理工大学 | A kind of low section omnidirectional radiation filters dipole antenna |
| CN108736153A (en) * | 2018-04-26 | 2018-11-02 | 西安电子科技大学 | A kind of three frequency low section paster antennas |
| CN109560356A (en) * | 2018-11-22 | 2019-04-02 | 深圳大学 | A kind of double frequency filter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03150904A (en) * | 1989-11-07 | 1991-06-27 | Fuji Elelctrochem Co Ltd | Dielectric filter |
| CN201156573Y (en) * | 2008-01-25 | 2008-11-26 | 南京理工大学 | Integrated wave-guide band filter based on foldable substrate |
| CN202009064U (en) * | 2011-05-12 | 2011-10-12 | 重庆大学 | Part-H-surface microwave band filter based on PCB technology |
| CN205211899U (en) * | 2015-12-21 | 2016-05-04 | 华南理工大学 | Metal resonant cavity wave filter of embedded fluting metal sheet with low frequency zero point |
-
2015
- 2015-12-21 CN CN201510974417.2A patent/CN105428765B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03150904A (en) * | 1989-11-07 | 1991-06-27 | Fuji Elelctrochem Co Ltd | Dielectric filter |
| CN201156573Y (en) * | 2008-01-25 | 2008-11-26 | 南京理工大学 | Integrated wave-guide band filter based on foldable substrate |
| CN202009064U (en) * | 2011-05-12 | 2011-10-12 | 重庆大学 | Part-H-surface microwave band filter based on PCB technology |
| CN205211899U (en) * | 2015-12-21 | 2016-05-04 | 华南理工大学 | Metal resonant cavity wave filter of embedded fluting metal sheet with low frequency zero point |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123194A (en) * | 2016-11-30 | 2018-06-05 | 凯镭思通讯设备（上海）有限公司 | A kind of thin-walled stretches cavity body filter and production method |
| 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 |
| CN106654539A (en) * | 2017-01-18 | 2017-05-10 | 华南理工大学 | Filtering antenna based on metal integrated structure |
| CN106684512A (en) * | 2017-01-18 | 2017-05-17 | 华南理工大学 | Duplexing antenna based on metal integrated structure |
| CN106684512B (en) * | 2017-01-18 | 2019-10-18 | 华南理工大学 | A kind of duplexed antenna based on metal-integral structure |
| CN106654539B (en) * | 2017-01-18 | 2023-07-18 | 华南理工大学 | Filtering antenna based on metal integrated structure |
| CN108232434A (en) * | 2017-12-15 | 2018-06-29 | 华南理工大学 | A kind of low section omnidirectional radiation filters dipole antenna |
| CN108232434B (en) * | 2017-12-15 | 2023-11-21 | 华南理工大学 | Low-profile omnidirectional radiation filtering dipole antenna |
| CN108736153A (en) * | 2018-04-26 | 2018-11-02 | 西安电子科技大学 | A kind of three frequency low section paster antennas |
| CN108736153B (en) * | 2018-04-26 | 2021-01-12 | 西安电子科技大学 | Three-frequency low-profile patch antenna |
| CN109560356A (en) * | 2018-11-22 | 2019-04-02 | 深圳大学 | A kind of double frequency filter |
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| Publication number | Publication date |
|---|---|
| CN105428765B (en) | 2019-05-14 |
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