CN105428765B - A kind of Metal cavity filter of the embedded slotted metal plate with low frequency zero point - Google Patents
A kind of Metal cavity filter of the embedded slotted metal plate with low frequency zero point Download PDFInfo
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- CN105428765B CN105428765B CN201510974417.2A CN201510974417A CN105428765B CN 105428765 B CN105428765 B CN 105428765B CN 201510974417 A CN201510974417 A CN 201510974417A CN 105428765 B CN105428765 B CN 105428765B
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- China
- Prior art keywords
- metal plate
- metal
- line
- rabbet joint
- cavity
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Classifications
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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 Metal cavity filter of the invention discloses a kind of embedded slotted metal plate with low frequency zero point, including Metal cavity, probe and SMA head, the Metal cavity embedded metal plate are provided with the line of rabbet joint on the metal plate.The present invention controls the multimode of filter and the position of transmission zero by adjusting position and the size of the line of rabbet joint on metal plate and metal plate, had by the bandpass filter that it is designed small in size, the advantages that structure is simple, handling ease, performance are good, can satisfy the requirement of communication system.
Description
Technical field
The present invention relates to a kind of in-line type metal cavity filters, and in particular to a kind of embedded fluting gold with low frequency zero point
Belong to the Metal cavity filter of plate.
Background technique
Microwave filter is the essential device of transmitting terminal and receiving end in Modern Communication System, it plays separation to signal
Effect, allows useful signal is as zero-decrement as possible to pass through, the decaying as big as possible to useless signal inhibits it to pass through.With
The development of wireless communication technique, the frequency band between signal is more and more narrow, this just proposes the specification of filter and reliability higher
Requirement.Rectangular cavities filter have high frequency selectivity, filter with low insertion loss, power capacity be big, steady performance and have
There is very high application value.The passband that many scholars generate multimode to cavity body filter is studied, by adjusting resonator
Between coupling change separation multimode, generate transmission zero, further increase band logical performance.
Summary of the invention
In order to overcome shortcoming and deficiency of the existing technology, the present invention provides a kind of embedded fluting with low frequency zero point
The Metal cavity filter of metal plate.
The purpose of the present invention is to propose to a kind of cavity body filters that can produce multiple transmission poles and transmission zero, in rectangle
In Metal cavity body, one piece of metal plate is embedded, outputs the line of rabbet joint on a metal plate, by adjusting the slot on metal plate and metal plate
The position of line, size, to control the transmission pole of filter and the position of transmission zero.
The present invention adopts the following technical scheme:
A kind of Metal cavity filter of the embedded slotted metal plate with low frequency zero point, including probe and SMA head, also
Including Metal cavity, the Metal cavity embedded metal plate is provided with the line of rabbet joint on the metal plate.
The line of rabbet joint is specially rectangle.
The line of rabbet joint is specially three, wherein a line of rabbet joint is located at the midline position of metal plate length direction, two other
Middle line about metal plate length direction is symmetrical.
The probe and SMA probe weld together, and specific two groups, are located at the both ends of Metal cavity for presenting
Electricity.
The line of rabbet joint length positioned at metal plate length direction middle line is greater than the two other line of rabbet joint.
The Metal cavity and metal plate are rectangular configuration.
Beneficial effects of the present invention:
(1) present invention can satisfy miniaturization, highly selective, high q-factor, design and the features such as the processing is simple；
(2) structure of the invention is small in size, improves the big problem of rectangular cavities filter volume；
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the side view of Fig. 1；
Fig. 3 is the top view of Fig. 1；
Fig. 4 is the corresponding Electromagnetic Simulation curve of frequency of the embodiment of the present invention.
Specific embodiment
Below with reference to examples and drawings, the present invention is described in further detail, but embodiments of the present invention are not
It is limited to this.
Embodiment
A kind of Metal cavity filter of the embedded slotted metal plate with low frequency zero point, including Metal cavity 3, institute
3 embedded metal plate 1 of metallized metal resonant cavity is stated, is provided with the line of rabbet joint 2 on the metal plate 1.
As shown in Figure 1-Figure 3, Metal cavity is rectangular configuration, and length is about 1/2 wave of the centre frequency to work
Long, width is about 1/4 wavelength of centre frequency, and metal plate is embedded in Metal cavity, and the front and back with Metal cavity
Inner wall connection.
It is provided with the line of rabbet joint on the metal plate, three line of rabbet joint are provided in the present embodiment, three line of rabbet joint are rectangle, wherein one
The line of rabbet joint is located on the middle line of metal plate length direction, and its length is equal with the width of metal plate, the position of the two other line of rabbet joint
Two sides symmetrical about metal plate length direction middle line, and being located at middle line are set, in addition the line of rabbet joint length positioned at middle line is greater than
The length of two line of rabbet joint.
The present embodiment further includes probe 4 and SMA head 5, and the probe and SMA probe weld together, Metal cavity two
A side is respectively provided with probe and SMA head, and the probe is connect with metal plate, for feeding.
The metal plate and Metal cavity are made of metal material, preferably gold and silver.
The process of the present embodiment is as follows:
Metal cavity incision is divided into upper and lower cavity and metal plate；
The line of rabbet joint is outputed on a metal plate and for the screw thread of fixing screws and the aperture of linking probe；
On lower chamber, the threaded hole of fixed sub-miniature A connector is outputed in each near ports of input and output, is outputed in cavity wall
The groove of the screw threads of fixing screws and fixed metal plate outputs the lower half portion for accommodating the through-hole of probe in input/output port；
On upper cavity, the threaded hole of fixed sub-miniature A connector is outputed in each near ports of input and output, in the chamber of upper cavity
Threaded hole corresponding to fixing screws is outputed on body wall, and the upper half for accommodating the through-hole of probe is outputed in input/output terminal cavity wall
Part；
SMA are welded with probe finally, by the groove of metal plate insertion lower chamber, probe is welded to metal
Plate is fixed on wire chamber with screw SMA, covers metal upper cavity, and with screw upper cavity, metal plate and cavity of resorption
Body is fixed up, and is finally tested.
As shown in figure 4, analogous diagram illustrates that mentioned filter construction can introduce transmission zero in upper and lower stop-band, logical
With interior generation transmission pole.
The present invention mainly controls transmission pole and zero point using the metal plate that wire chamber embeds, by adjusting probe length
The size of the line of rabbet joint and position control the coupling between input coupling and each mode in (size of metal plate), metal plate.Pass through tune
The overall dimensions etc. of whole wire chamber, control and raising performance of filter.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by the embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (3)
1. a kind of Metal cavity filter of the embedded slotted metal plate with low frequency zero point, including probe and SMA head, special
Sign is, further includes Metal cavity, and the Metal cavity embeds one piece of metal plate, is provided with the line of rabbet joint on the metal plate；
The line of rabbet joint is specially rectangle；
The line of rabbet joint is specially three, wherein a line of rabbet joint is located at the midline position of metal plate length direction, two other about
The middle line of metal plate length direction is symmetrical；
And the length for being located at the line of rabbet joint of midline position is equal with the width of metal plate.
2. Metal cavity filter according to claim 1, which is characterized in that the probe and SMA probe are welded on
Together, specific two groups, the both ends of Metal cavity are located at for feeding.
3. Metal cavity filter according to claim 1, which is characterized in that the Metal cavity and metal 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 CN105428765A (en) | 2016-03-23 |
| CN105428765B true CN105428765B (en) | 2019-05-14 |
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Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105428765B (en) |
Families Citing this family (7)
| 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 |
| CN106785274B (en) * | 2017-01-17 | 2020-11-24 | 华南理工大学 | Band-pass filter based on three-layer metal plate structure |
| CN106654539B (en) * | 2017-01-18 | 2023-07-18 | 华南理工大学 | Filtering 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 |
| CN108232434B (en) * | 2017-12-15 | 2023-11-21 | 华南理工大学 | Low-profile omnidirectional radiation filtering dipole antenna |
| CN108736153B (en) * | 2018-04-26 | 2021-01-12 | 西安电子科技大学 | Three-frequency low-profile patch antenna |
| CN109560356B (en) * | 2018-11-22 | 2020-08-18 | 深圳大学 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105428765A (en) | 2016-03-23 |
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Granted publication date: 20190514 Termination date: 20211221 |