CN2877052Y - Direct coupled substrate integrated waveguide spheric cavity filter - Google Patents
Direct coupled substrate integrated waveguide spheric cavity filter Download PDFInfo
- Publication number
- CN2877052Y CN2877052Y CN 200620070849 CN200620070849U CN2877052Y CN 2877052 Y CN2877052 Y CN 2877052Y CN 200620070849 CN200620070849 CN 200620070849 CN 200620070849 U CN200620070849 U CN 200620070849U CN 2877052 Y CN2877052 Y CN 2877052Y
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- wave
- substrate
- substrate integrated
- circular cavity
- guide circular
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Abstract
The utility model discloses a direct-coupled filter having substrate-integrated waveguide round cavity. The filter comprises a medium substrate with metal patches at front and back surface thereof, substrate-integrated waveguide round cavities on the medium substrate, waveguides for coupling the round cavities, and microstrip lines connected to the substrate-integrated waveguide round cavities at both side edges, wherein the round cavities are formed of metallized through-holes providing on the medium substrate in circumference arrangement, and the waveguide is formed of two rows of the metallized through-holes. The utility model has small size, light weight, high quality factor, low loss, low cost and easy integration.
Description
Technical field
The utility model relates to a critical component of microwave millimeter Radio Frequency Subsystem, especially for the direct manifold type substrate integrated wave-guide circular cavity wave-filter of microwave and millimeter wave integrated circuit.
Background technology
The microwave and millimeter wave filter is a critical component of microwave millimeter Radio Frequency Subsystem, and particularly in the microwave and millimeter wave integrated circuit, radio-frequency front-end need be used low insertion loss, filter that selectivity is good.The filter that utilizes traditional manufacturing high quality factor microwave and millimeter wave wave filter technology (as traditional metal waveguide) to make has high quality factor value, low-loss advantage, but have simultaneously bulky, cost is high, be difficult to integrated shortcoming.
Summary of the invention
The utility model provides a kind of and helps the design of microwave and millimeter wave integrated circuit and volume is little, in light weight, high quality factor, low-loss, low cost, be easy to integrated direct manifold type substrate integrated wave-guide circular cavity wave-filter.
The utility model adopts following technical scheme:
The direct manifold type substrate integrated wave-guide circular cavity wave-filter that a kind of filtering is used, comprise that positive and negative two sides is provided with the dielectric substrate of metal patch, on dielectric substrate, be provided with substrate integrated wave-guide circular cavity wave, between substrate integrated wave-guide circular cavity wave, pass through waveguide-coupled, be connected with microstrip line on the substrate integrated wave-guide circular cavity wave of both sides of the edge respectively being positioned at, above-mentioned substrate integrated wave-guide circular cavity wave is by being located on the dielectric substrate and constituting by the plated-through hole of circumferential arrangement, and waveguide is made of 2 row metal through holes.
Compared with prior art, the utlity model has following advantage:
The utility model has utilized the SIW circular cavity to have high Q value, low-loss characteristics, as elementary cell, adopts short SIW waveguide to intercouple with the SIW circular cavity between the cavity, makes its function admirable.The utility model utilization is at fluting on the metal skin plates and make a series of metal throuth hole and realize on dielectric substrate, thereby helps integrated in the microwave and millimeter wave circuit design; The direct coupling system that the utility model adopts short SIW waveguide to connect between cavity makes it have radiationless advantage; And with co-planar waveguide to SIW cavity feed, it is had and the easy advantage of coupling of input and output microstrip line.The concrete advantage of the utility model is as follows:
1) its transmission parameter has good squareness factor and selectivity;
2) adopt direct lotus root to close mode, can effectively suppress electromagnetic interference;
3) with microstrip line as input/output interface, can be easily and microstrip line, coaxial line connects;
4) in the design of microwave and millimeter wave circuit, be easy to integrated.Owing to this filter is realized on dielectric substrate fully, and utilize the dielectric constant of dielectric substrate can regulate this filter size size very easily, thereby realization preferably and other microwave and millimeter wave circuit is integrated;
5) compare with attainable other shape SIW cavity, the SIW circular cavity has the highest Q value and very low insertion loss.This is that so compare with microstrip circuit, its Q value is than higher because this structure has and the similar characteristic of circular metal waveguide, and loss ratio is lower.
6) cost is low.Dielectric substrate can adopt polytetrafluoroethylene pressing plate, polytetrafluoroethylene Ceramic Composite dielectric substrate, the LTCC various microwave-medium plates of type such as (LTCC), and does not need the special process, so cost is low.
Description of drawings
Fig. 1 is a structural front view of the present utility model.
Fig. 2 is a structure vertical view of the present utility model.
Fig. 3 is a structure upward view of the present utility model.
Fig. 4 is a plated-through hole structural representation of the present utility model.
Fig. 5 is the utility model emulation and test result figure.
Embodiment
The direct manifold type substrate integrated wave-guide circular cavity wave-filter that a kind of filtering is used, just comprise, anti-two sides is provided with metal patch 2,3 dielectric substrate 1, on dielectric substrate 1, be provided with substrate integrated wave-guide circular cavity wave 4, between substrate integrated wave-guide circular cavity wave, be coupled by waveguide 5, on the substrate integrated wave-guide circular cavity wave 4 that is positioned at both sides of the edge, be connected with microstrip line 6 respectively, 7, above-mentioned substrate integrated wave-guide circular cavity wave 4 is by being located on the dielectric substrate 1 and constituting by the plated-through hole 8 of circumferential arrangement, waveguide 5 is made of 2 row metal through holes 9, plated-through hole 8, the 9th, on dielectric substrate, offer through hole, metallic sheath 10 is set on through-hole wall and metallic sheath and the metal patch that is overlying on the dielectric substrate bilateral are coupled together, in the present embodiment, microstrip line 6,7 respectively by coplanar wave guide feedback structure 61,71 are connected with substrate integrated wave-guide circular cavity wave 4.The utility model is 2.65 at dielectric constant, be achieved the simulation result of scattering parameter and test result such as Fig. 5 on the thick 1 millimeter microwave-medium substrate.Its centre frequency is 5.93GHz, and minimum insertion loss is less than 2.2dB, and relative bandwidth is 2.9%, and band is outer to be suppressed at below the 44dB.
Claims (2)
1, the direct manifold type substrate integrated wave-guide circular cavity wave-filter that a kind of filtering is used, just it is characterized in that comprising, anti-two sides is provided with metal patch (2,3) dielectric substrate (1), on dielectric substrate (1), be provided with substrate integrated wave-guide circular cavity wave (4), between substrate integrated wave-guide circular cavity wave, be coupled by waveguide (5), be connected with microstrip line (6 respectively being positioned on the substrate integrated wave-guide circular cavity wave of both sides of the edge (4), 7), plated-through hole (8) formation of circumferential arrangement is gone up and pressed to above-mentioned substrate integrated wave-guide circular cavity wave (4) by being located at dielectric substrate (1), and waveguide (5) is made of 2 row metal through holes (9).
2, direct manifold type substrate integrated wave-guide circular cavity wave-filter according to claim 1 and 2 is characterized in that microstrip line (6,7) is connected with substrate integrated wave-guide circular cavity wave (4) by coplanar wave guide feedback structure (61,71) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620070849 CN2877052Y (en) | 2006-03-30 | 2006-03-30 | Direct coupled substrate integrated waveguide spheric cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620070849 CN2877052Y (en) | 2006-03-30 | 2006-03-30 | Direct coupled substrate integrated waveguide spheric cavity filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2877052Y true CN2877052Y (en) | 2007-03-07 |
Family
ID=37820288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620070849 Expired - Lifetime CN2877052Y (en) | 2006-03-30 | 2006-03-30 | Direct coupled substrate integrated waveguide spheric cavity filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2877052Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241738A (en) * | 2014-09-16 | 2014-12-24 | 电子科技大学 | Substrate integrated waveguide tunable filter for loading PIN tube |
| CN107946706A (en) * | 2017-10-26 | 2018-04-20 | 中山大学 | Double frequency band-pass filter and its design method based on micro-strip and substrate integration wave-guide |
| CN113728514A (en) * | 2019-05-10 | 2021-11-30 | 株式会社藤仓 | Filter device |
-
2006
- 2006-03-30 CN CN 200620070849 patent/CN2877052Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241738A (en) * | 2014-09-16 | 2014-12-24 | 电子科技大学 | Substrate integrated waveguide tunable filter for loading PIN tube |
| CN104241738B (en) * | 2014-09-16 | 2017-06-20 | 电子科技大学 | A kind of substrate integration wave-guide tunable filter of loading PIN pipes |
| CN107946706A (en) * | 2017-10-26 | 2018-04-20 | 中山大学 | Double frequency band-pass filter and its design method based on micro-strip and substrate integration wave-guide |
| CN107946706B (en) * | 2017-10-26 | 2019-09-20 | 中山大学 | Double frequency band-pass filter and its design method based on micro-strip and substrate integration wave-guide |
| CN113728514A (en) * | 2019-05-10 | 2021-11-30 | 株式会社藤仓 | Filter device |
| US11888203B2 (en) | 2019-05-10 | 2024-01-30 | Fujikura Ltd. | Filter device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070307 |
|
| EXPY | Termination of patent right or utility model |