CN108493545B - Take waffle mode harmonic suppressor of rectangle post - Google Patents
Take waffle mode harmonic suppressor of rectangle post Download PDFInfo
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- CN108493545B CN108493545B CN201810494648.7A CN201810494648A CN108493545B CN 108493545 B CN108493545 B CN 108493545B CN 201810494648 A CN201810494648 A CN 201810494648A CN 108493545 B CN108493545 B CN 108493545B
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- 235000012773 waffles Nutrition 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 68
- 230000005764 inhibitory process Effects 0.000 abstract 1
- 238000010295 mobile communication Methods 0.000 abstract 1
- 230000001629 suppression Effects 0.000 description 11
- 239000004020 conductor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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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
- H01P1/212—Frequency-selective devices, e.g. filters suppressing or attenuating harmonic frequencies
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Abstract
The invention discloses a waffle mode harmonic suppressor with rectangular columns, which comprises a resonant cavity, input and output waveguides and 2 or more rows of metal columns A, wherein the metal columns A are transversely arranged, and are longitudinally arranged and connected with the resonant cavity only at the bottom. The waffle mode harmonic suppressor with the rectangular columns further comprises metal columns B which correspond to each metal column A and are connected with the resonant cavity only at the top. The cross section of the metal pillar B is different from that of the metal pillar a. Each metal column A is embedded between two corresponding rectangular metal columns B. The design can effectively increase the capacitance between the corresponding metal column A and the metal column B under the condition of not reducing the gap between the corresponding metal column A and the metal column B and not obviously reducing the power capacity of the device, thereby deepening the stop band inhibition depth of the filter and expanding the stop band bandwidth of the filter, and the filter can be widely applied to radars, missile guidance and various mobile communication systems.
Description
Technical Field
The invention relates to a microwave device, in particular to a compact high-power harmonic suppression filter.
Background
Due to the increasing strengthening of the international and domestic standards for electromagnetic compatibility, harmonic suppression of communication and military electronic systems is becoming a key technical problem. The waffle mode (wafleron) waveguide low-pass filter has low insertion loss, high power capacity and wide stop band characteristics, and is a main choice for harmonic suppression in a high-power communication system and a medium-long range radar. The traditional waffle-mode waveguide low-pass filter is composed of an array of metal columns which are vertically symmetrical and are periodically arranged along the transverse direction and the longitudinal direction. In order to deepen the harmonic suppression depth and widen the stop band width, the gap between the upper and lower corresponding metal posts needs to be reduced, thereby causing a sharp drop of the power capacity of the filter.
Disclosure of Invention
The invention aims to provide a compact waffle mode harmonic suppressor with rectangular columns, which increases the stopband suppression depth and widens the stopband bandwidth and improves the power capacity of a harmonic suppression filter.
In order to achieve the purpose, the invention adopts the technical scheme that:
a waffle mode harmonic suppressor with rectangular columns comprises a resonant cavity, input and output waveguides and metal columns A which are arranged in 2 rows or more in the transverse direction and are connected with the resonant cavity only at the bottom in 2 columns or more in the longitudinal direction. The waffle mode harmonic suppressor with the rectangular columns also comprises metal columns B which correspond to each metal column A and are only connected with the resonant cavity at the top; the cross section of the metal pillar B is different from that of the metal pillar a. The design can effectively increase the capacitance between the corresponding metal columns A and B under the condition of not reducing the gaps between the corresponding metal columns A and B and not obviously reducing the power capacity of the device, thereby deepening the stop band rejection depth of the filter and expanding the stop band bandwidth of the filter.
In order to better realize the purpose of the invention, the invention also has the following better technical scheme:
in some embodiments, the metal posts a are rectangular bodies, and two rectangular metal posts B correspond to each metal post a; each metal column A is embedded between the two corresponding rectangular metal columns B.
In some embodiments, in order to further increase the capacitance between each metal pillar a and the upper surface of the resonant cavity, a metal pit is provided at the top of the resonant cavity corresponding to each metal pillar a; each metal column A is embedded into the metal concave pit arranged correspondingly.
The invention utilizes different metal columns and metal pit structures from top to bottom, and effectively increases the capacitance between the upper conductor and the lower conductor on the premise of not reducing the gap between the upper conductor and the lower conductor, thereby achieving the purposes of deepening the suppression depth of the harmonic suppression filter and widening the stop band bandwidth of the harmonic suppression filter. Compared with the prior art, the invention has the advantages of compact structure, light weight, material saving and simple structure.
Drawings
Fig. 1 is a schematic diagram of the present invention and its embodiment example 1.
FIG. 2 is a cross-sectional view of FIG. 1A- -A.
Fig. 3 is a schematic diagram of embodiment 2 of the present invention.
The reference numbers in the figures are: 1. a resonant cavity; 2. a metal pillar A; 3. a metal column B; 4. a metal pit; 5. an input-output waveguide.
Detailed Description
The present invention will be described in further detail with reference to examples.
Examples 1
As shown in FIGS. 1 and 2, the waffle mode harmonic suppressor with rectangular columns comprises a resonant cavity 1, input and output waveguides 5 and 8 transverse rows and 8 longitudinal columns of metal columns A2 connected with the resonant cavity 1 only at the bottom. The waffle mode harmonic suppressor with the rectangular columns further comprises a metal column B3 corresponding to each metal column A2 and connected with the resonant cavity 1 only at the top; the cross-section of metal pillar B3 is different from the cross-section of the metal pillar a 2.
The metal columns A2 are rectangular bodies, and two rectangular metal columns B3 correspond to each metal column A2; each metal pillar a2 is embedded between two corresponding rectangular metal pillars B3. A metal pit 4 is arranged at the top of the resonant cavity 1 corresponding to each metal column A2; each metal column a2 is embedded in the metal pit 4 corresponding to it.
EXAMPLES example 2
As shown in fig. 3, the present embodiment differs from embodiment 1 only in that no metal pit is provided at the top of the resonator.
The invention can form various high-power waveguide harmonic suppression filters and is used for harmonic suppression of power amplifiers in various high-power various communication and military electronic systems.
Claims (4)
1. A waffle mode harmonic suppressor with rectangular columns is characterized by comprising a resonant cavity (1), input and output waveguides (5) and metal columns A (2) which are arranged in 2 rows or more in the transverse direction and are connected with the resonant cavity (1) only at the bottom in 2 columns or more in the longitudinal direction; the metal column A (2) is a cuboid;
the metal column B (3) corresponds to each metal column A (2) and is connected with the resonant cavity (1) only at the top; the cross section of the metal column B (3) is different from that of the metal column A (2);
the metal column A (2) is embedded inside the metal column B (3);
two rectangular metal columns B (3) are corresponding to each metal column A (2);
the metal column A (2) is embedded between the two corresponding rectangular metal columns B (3).
2. The waffle mode harmonic suppressor with rectangular columns according to claim 1, wherein a metal pit (4) is arranged at the top of the resonant cavity (1) corresponding to each metal column A (2).
3. The waffle mode harmonic suppressor with rectangular columns according to claim 2, wherein each metal column A (2) is embedded in the metal pit (4) corresponding to the metal column A.
4. The waffle mode harmonic suppressor with rectangular columns according to any one of claims 1 to 3, wherein the waffle mode harmonic suppressor with rectangular columns is asymmetric from top to bottom with respect to any horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810494648.7A CN108493545B (en) | 2018-05-22 | 2018-05-22 | Take waffle mode harmonic suppressor of rectangle post |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810494648.7A CN108493545B (en) | 2018-05-22 | 2018-05-22 | Take waffle mode harmonic suppressor of rectangle post |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108493545A CN108493545A (en) | 2018-09-04 |
| CN108493545B true CN108493545B (en) | 2020-10-23 |
Family
ID=63351633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810494648.7A Active CN108493545B (en) | 2018-05-22 | 2018-05-22 | Take waffle mode harmonic suppressor of rectangle post |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108493545B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2599720A (en) * | 2020-10-09 | 2022-04-13 | Elekta ltd | RF source protection |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3271706A (en) * | 1964-12-07 | 1966-09-06 | Gen Electric | Microwave filter |
| JPH11195903A (en) * | 1997-12-26 | 1999-07-21 | New Japan Radio Co Ltd | Waveguide filter |
| CN1647309A (en) * | 2002-04-17 | 2005-07-27 | 皇家飞利浦电子股份有限公司 | Waveguide communication system |
| CN205429123U (en) * | 2016-03-15 | 2016-08-03 | 中国电子科技集团公司第二十七研究所 | High -power high suppression degree harmonic filter of S frequency channel broadband |
| CN107046159A (en) * | 2016-02-08 | 2017-08-15 | 日本电产艾莱希斯株式会社 | Waveguide assembly and antenna assembly and radar with the waveguide assembly |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4496876A (en) * | 1982-09-23 | 1985-01-29 | The United States Of America As Represented By The Secretary Of The Navy | Frequency-spreading coupler |
| DE19736367A1 (en) * | 1997-08-21 | 1999-02-25 | Bosch Gmbh Robert | Waveguide filter for HF power amplifier |
| CN103545583A (en) * | 2013-10-24 | 2014-01-29 | 江苏贝孚德通讯科技股份有限公司 | Waveguide low-pass filter |
-
2018
- 2018-05-22 CN CN201810494648.7A patent/CN108493545B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3271706A (en) * | 1964-12-07 | 1966-09-06 | Gen Electric | Microwave filter |
| JPH11195903A (en) * | 1997-12-26 | 1999-07-21 | New Japan Radio Co Ltd | Waveguide filter |
| CN1647309A (en) * | 2002-04-17 | 2005-07-27 | 皇家飞利浦电子股份有限公司 | Waveguide communication system |
| CN107046159A (en) * | 2016-02-08 | 2017-08-15 | 日本电产艾莱希斯株式会社 | Waveguide assembly and antenna assembly and radar with the waveguide assembly |
| CN205429123U (en) * | 2016-03-15 | 2016-08-03 | 中国电子科技集团公司第二十七研究所 | High -power high suppression degree harmonic filter of S frequency channel broadband |
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| Publication number | Publication date |
|---|---|
| CN108493545A (en) | 2018-09-04 |
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