CN203013889U - X-waveband band pass filter for airborne radar frequency source - Google Patents
X-waveband band pass filter for airborne radar frequency source Download PDFInfo
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- CN203013889U CN203013889U CN 201220600082 CN201220600082U CN203013889U CN 203013889 U CN203013889 U CN 203013889U CN 201220600082 CN201220600082 CN 201220600082 CN 201220600082 U CN201220600082 U CN 201220600082U CN 203013889 U CN203013889 U CN 203013889U
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- frequency source
- pass filter
- dielectric
- band pass
- airborne radar
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Abstract
The utility model belongs to microwave circuit technology, relating to improvement of an X-waveband band pass filter for an airborne radar frequency source. The filter is composed of a dielectric plate and a parallel coupling microstrip-line pattern (2), wherein the parallel coupling microstrip-line pattern is formed by copper clad foils; and is characterized in that the dielectric plate (1) is a Roger6010 microwave dielectric plate. The X-waveband band pass filter for the airborne radar frequency source is small in size, low in weight and convenient for integration, and satisfies miniaturization and integration requirements of the frequency source.
Description
Technical field
The utility model belongs to the microwave circuit technology, relates to the improvement to the X-band band pass filter that is used for the airborne radar frequency source.
Background technology
The structure of present a kind of X-band band pass filter for the airborne radar frequency source is referring to Fig. 1, and it is by forming by covering the Coupled Miccrostrip Lines figure 2 that Copper Foil consists of on dielectric-slab 1 and dielectric-slab 1.
Operation principle: this filter is made of input and output transmission line and the cascade of N section quarter-wave coupling line, requires to determine filter order N by filtering characteristic.Derive the equivalent electric circuit of coupling line cascade circuit according to microwave network theory, can determine length, width and the gap of each section coupling line in conjunction with the former shape parameter of low pass filter.Referring to D.M.Pozar, microwave engineering, the third edition, Electronic Industry Press, 2007, pp.359-368.
Its shortcoming is: the general Rogers4003 microwave-medium plate that adopts of dielectric-slab 1, its DIELECTRIC CONSTANT ε=3.35, Coupled Miccrostrip Lines filter size and weight based on this dielectric-slab design are bigger than normal, and is more obvious in the X-band application, is unfavorable for that the miniaturization of planar circuit is integrated.
Summary of the invention
The purpose of this utility model is: propose a kind of size little, lightweight, be convenient to the integrated X-band band pass filter that is used for the airborne radar frequency source, in order to satisfy the miniaturization of airborne radar frequency source and integrated needs.
The technical solution of the utility model is: a kind of installation is used for the X-band band pass filter of airborne radar frequency source, and it is gone up by covering the Coupled Miccrostrip Lines figure (2) that Copper Foil consists of by dielectric-slab (1) and dielectric-slab (1) and forms; It is characterized in that: said dielectric-slab (1) is Rogers6010 microwave-medium plate, its DIELECTRIC CONSTANT ε=10.2～10.9, the thickness δ=0.508mm of dielectric-slab (1)～0.635mm; What consist of Coupled Miccrostrip Lines figure (2) covers copper thickness t=15 μ m～40 μ m.
The utility model has the advantages that: volume is little, and is lightweight, is convenient to integratedly, satisfied the miniaturization of frequency source and integrated needs.An embodiment of the present utility model, volume are only below 70% of present filter, weight saving more than 30%.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The below is described in further details the utility model.Referring to Fig. 1, a kind of installation is used for the X-band band pass filter of airborne radar frequency source, and it is gone up by covering the Coupled Miccrostrip Lines figure (2) that Copper Foil consists of by dielectric-slab (1) and dielectric-slab (1) and forms; It is characterized in that: said dielectric-slab (1) is Rogers6010 microwave-medium plate, its DIELECTRIC CONSTANT ε=10.2～10.9, the thickness δ=0.508mm of dielectric-slab (1)～0.635mm; What consist of Coupled Miccrostrip Lines figure (2) covers copper thickness t=15 μ m～40 μ m.
Operation principle of the present utility model is: the filter coupled minor matters length of Coupled Miccrostrip Lines is the quarter-wave guide wavelength, guide wavelength is with the dielectric constant of the dielectric-slab relation that is inversely proportional to, according to this theory, select the high microwave-medium plate of dielectric constant can reduce little band flat filter circuit size.
Following table provides the major parameter of 3 embodiment of the utility model.
| ? | Passband (GHz) | ε | δ（mm） | T（μm） |
| Example 1 | 8.0～9.0 | 10.2 | 0.508 | 17 |
| Example 2 | 11.0～12.0 | 10.7 | 0.635 | 35 |
| Example 3 | 8.9～10.3 | 10.9 | 0.635 | 17 |
The volume of embodiment 1 is only 65% of present filter, weight saving 21%.
Claims (1)
1. X-band band pass filter that is used for the airborne radar frequency source, it is gone up by covering the Coupled Miccrostrip Lines figure (2) that Copper Foil consists of by dielectric-slab (1) and dielectric-slab (1) and forms; It is characterized in that: said dielectric-slab (1) is Rogers6010 microwave-medium plate, its DIELECTRIC CONSTANT ε=10.2～10.9, the thickness δ=0.508mm of dielectric-slab (1)～0.635mm; What consist of Coupled Miccrostrip Lines figure (2) covers copper thickness t=15 μ m～40 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220600082 CN203013889U (en) | 2012-11-14 | 2012-11-14 | X-waveband band pass filter for airborne radar frequency source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220600082 CN203013889U (en) | 2012-11-14 | 2012-11-14 | X-waveband band pass filter for airborne radar frequency source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203013889U true CN203013889U (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220600082 Expired - Fee Related CN203013889U (en) | 2012-11-14 | 2012-11-14 | X-waveband band pass filter for airborne radar frequency source |
Country Status (1)
| Country | Link |
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| CN (1) | CN203013889U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247145A (en) * | 2019-06-26 | 2019-09-17 | 北京邮电大学 | It is a kind of with the adjustable wideband filtered balun of the bandwidth with interior matched well and isolation |
| CN112054271A (en) * | 2020-08-25 | 2020-12-08 | 东南大学 | Miniaturized multichannel microwave and millimeter wave filter bank and design method thereof |
-
2012
- 2012-11-14 CN CN 201220600082 patent/CN203013889U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247145A (en) * | 2019-06-26 | 2019-09-17 | 北京邮电大学 | It is a kind of with the adjustable wideband filtered balun of the bandwidth with interior matched well and isolation |
| CN112054271A (en) * | 2020-08-25 | 2020-12-08 | 东南大学 | Miniaturized multichannel microwave and millimeter wave filter bank and design method thereof |
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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: 20130619 Termination date: 20181114 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |