CN202977671U - Ultra-wideband waveguide filter - Google Patents
Ultra-wideband waveguide filter Download PDFInfo
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- CN202977671U CN202977671U CN 201220622807 CN201220622807U CN202977671U CN 202977671 U CN202977671 U CN 202977671U CN 201220622807 CN201220622807 CN 201220622807 CN 201220622807 U CN201220622807 U CN 201220622807U CN 202977671 U CN202977671 U CN 202977671U
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Abstract
An ultra-wideband waveguide filter disclosed by the utility model relates to the field of electronic communication and aims to solve the technical problems that traditional ultra-wideband waveguide filters are complex in structure, large in size, difficult to regulate, low in reliability, and the like. In the ultra-wideband waveguide filter disclosed by the utility model, a first K-type male head coaxial port (1) located at the left side of a filter cavity receives high-frequency microwave signals and is connected with a first cylinder internal conductor step impedance transformation transition section (2) and a first ridge waveguide (3); the first ridge waveguide (3) passes through three-stage descending steps and then sequentially connected with a first rectangular waveguide (4) and a ridge waveguide low-pass filter (5); and the ridge waveguide low-pass filter (5) is sequentially connected backwards with a second rectangular waveguide, three-stage ascending steps, a second ridge waveguide, a second cylinder internal conductor step impedance transformation transition section, and a second K-type male head coaxial port located at the right side of the filter cavity to output to the outside.
Description
Technical field
The utility model relates to electronic communication field, particularly a kind of a kind of ultra broadband waveguide filter for electronic equipments such as military-civil microwave communication, satellite communication, radar equipment, Aero-Space.
Background technology
The ultra broadband waveguide filter is mainly used in the electronic equipments such as military-civil microwave communication, satellite communication, radar equipment, Aero-Space being used for the wide-band channel filtering clutter, the outer unwanted signal of inhibition zone as much as possible to realize required microwave signal normal transmission.The existing product product adopts other cavity body structures of non-waveguiding structure mode, thus have that complex structure, volume are large, the shortcoming such as debug difficulties, reliability are low.
Summary of the invention
The technical problems such as the utility model is intended to solve that traditional ultra broadband waveguide filter complex structure, volume are large, debug difficulties, reliability are low, with provide a kind of simple in structure, volume is little, lightweight a kind of ultra broadband waveguide filter.
The purpose of this utility model is achieved through the following technical solutions.
a kind of ultra broadband waveguide filter of the present utility model, be positioned at a K type sun coaxial port one 1 reception high-frequency microwave signals in filter cavity left side, a K type sun coaxial port one 1 connecting cylinder inner wire step impedance conversion changeover portion 1 and ridge waveguides 1, ridge waveguide 1 connects rectangular waveguide 1 and ridge waveguide low pass filter 5 after via three grades of ladder steps that fall progressively in turn, ridge waveguide low pass filter 5 connects rectangular waveguide two backward in turn, three grades of ladder steps that increase progressively, ridge waveguide two, Circular inner conductor step impedance conversion changeover portion two and a K type sun coaxial port two that is positioned at the filter cavity right side are outwards exported.
A kind of ultra broadband waveguide filter of the present utility model, wherein the both sides end face of filter cavity is provided with Waveguide coaxial conversion end cap, and the top of filter cavity is provided with upper cover plate.
The beneficial effect of a kind of ultra broadband waveguide filter of the utility model: high pass filter and the structure that the ridge waveguide low pass filter combines because the cut-off effect of utilizing waveguide to low frequency forms, make structure simpler, volume is little, and is lightweight.
Description of drawings
Fig. 1 structure principle chart of the present utility model
The number in the figure explanation:
A 1 K type sun coaxial port one, 2 Circular inner conductor step impedance conversion changeover portions one, 3 ridge waveguides one, 4 rectangular waveguides one, 5 ridge waveguide low pass filters
Embodiment
The utility model detailed construction, application principle, effect and effect with reference to accompanying drawing 1, are explained by following execution mode.
consult shown in Figure 1, a kind of ultra broadband waveguide filter of the present utility model, be positioned at a K type sun coaxial port one 1 reception high-frequency microwave signals in filter cavity left side, a K type sun coaxial port one 1 connecting cylinder inner wire step impedance conversion changeover portion 1 and ridge waveguides 1, ridge waveguide 1 connects rectangular waveguide 1 and ridge waveguide low pass filter 5 after via three grades of ladder steps that fall progressively in turn, ridge waveguide low pass filter 5 connects rectangular waveguide two backward in turn, three grades of ladder steps that increase progressively, ridge waveguide two, Circular inner conductor step impedance conversion changeover portion two and a K type sun coaxial port two that is positioned at the filter cavity right side are outwards exported.
A kind of ultra broadband waveguide filter of the present utility model adopts the waveguiding structure form, due to broader bandwidth, adopts conventional rectangular waveguide that cut-off effect and a ridge waveguide low pass filter of low frequency are combined, and passband adopts the basic mode transmission of waveguide or ridge waveguide.Output be transitioned into gradually with the ridge waveguide stepped impedance coaxial, like this broadening frequency bandwidth, reached 8GHz.High-frequency microwave signal (TEM mould) is from one 1 inputs of a K type sun coaxial port, arrive ridge waveguide 1 by Circular inner conductor step impedance conversion changeover portion 1, ridge waveguide 1 makes waveguide impedance be elevated to gradually normal rectangular waveguide 1 by the height (three grades of ladder steps) that reduces ridge again and ridge waveguide low pass filter 5 is connected, and this moment, pattern was converted to TE
10Mould.By the conversion of 5 pairs of transmission characteristics of ridge waveguide low pass filter, after reaching the filter amplitude-frequency characteristic and requiring again the TE of waveguide
10The conversion of mould such as front is transitioned into coaxial TEM mould conversely gradually by two outputs of a K type sun coaxial port.
A kind of ultra broadband waveguide filter of the present utility model, adopt the form of cavity+upper cover plate+Waveguide coaxial conversion end cap on structure, silk thread cuts and the processing of accurate digital control milling machine to be conducive to like this adopt electric spark to be careful, not only reduced processing cost but also guaranteed the structure dimensional accuracy, structural member adopts Hpb59-1 ledrite electroplate 1 μ m.The seal groove of the anti-electromagnetic leakage of having considered aspect assembling adopts conductive silver glue to fill.
Therefore, a kind of ultra broadband waveguide filter of the present utility model, have simple in structure, volume is little, many technological merits such as lightweight.
Claims (2)
1. ultra broadband waveguide filter, it is characterized in that: a K type sun coaxial port one (1) the reception high-frequency microwave signal that is positioned at the filter cavity left side, a K type sun coaxial port one (1) connecting cylinder inner wire step impedance conversion changeover portion one (2) and ridge waveguide one (3), ridge waveguide one (3) connects rectangular waveguide one (4) and ridge waveguide low pass filter (5) after via three grades of ladder steps that fall progressively in turn, ridge waveguide low pass filter (5) connects rectangular waveguide two backward in turn, three grades of ladder steps that increase progressively, ridge waveguide two, Circular inner conductor step impedance conversion changeover portion two and a K type sun coaxial port two that is positioned at the filter cavity right side are outwards exported.
2. a kind of ultra broadband waveguide filter according to claim 1, it is characterized in that: the both sides end face of described filter cavity is provided with Waveguide coaxial conversion end cap, and the top of filter cavity is provided with upper cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220622807 CN202977671U (en) | 2012-11-22 | 2012-11-22 | Ultra-wideband waveguide filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220622807 CN202977671U (en) | 2012-11-22 | 2012-11-22 | Ultra-wideband waveguide filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202977671U true CN202977671U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220622807 Expired - Fee Related CN202977671U (en) | 2012-11-22 | 2012-11-22 | Ultra-wideband waveguide filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202977671U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466320A (en) * | 2014-12-18 | 2015-03-25 | 西安电子工程研究所 | Ka wave band broadband band-pass filter utilizing cut-off waveguide |
-
2012
- 2012-11-22 CN CN 201220622807 patent/CN202977671U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466320A (en) * | 2014-12-18 | 2015-03-25 | 西安电子工程研究所 | Ka wave band broadband band-pass filter utilizing cut-off waveguide |
| CN104466320B (en) * | 2014-12-18 | 2017-05-10 | 西安电子工程研究所 | Ka wave band broadband band-pass filter utilizing cut-off waveguide |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20181122 |