CN102637929A - Band stop filter with suspension line - Google Patents
Band stop filter with suspension line Download PDFInfo
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- CN102637929A CN102637929A CN2012100963946A CN201210096394A CN102637929A CN 102637929 A CN102637929 A CN 102637929A CN 2012100963946 A CN2012100963946 A CN 2012100963946A CN 201210096394 A CN201210096394 A CN 201210096394A CN 102637929 A CN102637929 A CN 102637929A
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- transmission line
- main transmission
- medium substrate
- shell
- resonator
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Abstract
The invention relates to a band stop-filter with a suspension line, which comprises a rectangular medium substrate, a shell and connectors. A main transmission line is arranged on the upper portion of the medium substrate, resonators are arranged at the bottom of the medium substrate, a main transmission line conduction band is arranged on the main transmission line, metal layers, mounting holes and metal through holes are arranged at the edges of long sides of the medium substrate, the shell consists of an upper portion and a lower portion, the medium substrate is arranged between the upper shell and the lower shell, the upper shell and the lower shell can be electrically connected with the metal layers so that grounding is realized, and the connectors are arranged in the centers of the two ends of the shell and connected with the main transmission line. The main transmission line and the resonators of the filter can be arranged on two surfaces of the medium substrate respectively, and parallel coupling and capacitive coupling can be realized among the resonators and the main transmission line, so that wide stop bands can be realized, and the bandwidth of the band stop-filter can be designed freely.
Description
Technical field
The present invention relates to a kind of filter, be specifically related to a kind of suspended substrate stripline band stop filter.
Background technology
Because the development of wireless communication system; Crowded more and more relatively state appears in microwave frequency band; Band resource is divided more and more meticulousr; The requirement of noise, interference, inhibition degree such as spuious also increases day by day, and band stop filter is used in unwanted clutter of communication system filtering and noise signal, to improve systematic function.In addition, band stop filter is used for the spuious test of system, and carrier signal is curbed, and measures the conduction stray in other frequency ranges.Band stop filter mainly contains little band forms and cavity body structure form at present.On way of realization,, bigger based on the passband edge loss of the band stop filter of microstrip line because the Q value of little band forms resonator is low.Based on the band stop filter of cavity body structure, though the Q value is higher, loss is little, its complex structure, and processing is high with design cost, and the assembling of filter and debugging error can influence the performance of filter.
Summary of the invention
The present invention has overcome the deficiency of prior art; A kind of suspended substrate stripline band stop filter has been proposed; The main transmission line resonator of said filter can be separately positioned on the medium substrate two sides that suspends; Not only have parallel coupling between resonator and the main transmission line, but also can introduce capacitive coupling, can be used to realize the stopband of broad.Also design freedom is provided simultaneously for the bandwidth setting of band stop filter.
Technical scheme of the present invention is: a kind of suspended substrate stripline band stop filter comprises medium substrate, shell and connector; Said medium substrate is rectangle, and is provided with main transmission line on the top of medium substrate, is provided with resonator in the bottom of medium substrate; On main transmission line, be provided with the main transmission line conduction band, be provided with metal level, installing hole and metallic vias at the edge, long limit of said medium substrate, said shell is made up of two parts up and down; Medium substrate is arranged between lower casing two parts, and last lower casing and said metal level can be electrically connected, and are grounded; Centre at the shell two ends is provided with connector, and said connector is connected with main transmission line.
Said main transmission line conduction band is the metal conduction band, and said resonator is the metal conduction band.
Said resonator is a bending-type quarter-wave resonance device; One end links to each other with said metal level, is grounded, and the main transmission line on the other end and medium substrate top is relative; Realize capacitive coupling; The interlude of said resonator is parallel with main transmission line, realizes parallel coupling, and the spacing of being separated by between adjacent two resonators is the spacing of 1/4th guide wavelengths.
Main transmission line is that characteristic impedance is 50 ohm a suspended mictrostrip.
Said connector comprises insulating barrier, inner wire and metal flange, and said insulating barrier is cylindrical, is positioned at metal flange inside, and said inner wire passes the axis of insulating barrier, on said metal flange, is provided with screw hole.
The present invention has following beneficial effect:
1) size of the present invention and microstrip structure is suitable, but the Q value of resonator is more a lot of than the height of microstrip structure, is used to design band stop filter, can reduce the loss of passband.
2) main transmission line resonator of the present invention can be separately positioned on the two sides of medium substrate, between resonator and the main transmission line parallel coupling is arranged not only, also can introduce capacitive coupling, can be used to realize the stopband of broad.Also design freedom is provided simultaneously for the bandwidth setting of band stop filter.
3) the present invention adopts the PCB processing technology.
4) the present invention is with respect to the band stop filter of cavity body structure, and simple in structure, cost is lower.
Description of drawings
Further specify the present invention below in conjunction with accompanying drawing and embodiment.
Fig. 1 is a longitudinal cross-section of the present invention structural representation.
Fig. 2 is a horizontal section structural representation of the present invention.
Fig. 3 is an internal structure front schematic view of the present invention.
Fig. 4 is an internal structure schematic rear view of the present invention.
Fig. 5 is a connector transversary sketch map of the present invention.
Fig. 6 is a connector vertical structure sketch map of the present invention.
Among the figure, 1, shell; 2, main transmission line conduction band; 3, medium substrate; 4, resonator; 5, connector inner wire; 6 connectors; 7, medium is through walls; 8, screw; 9, installing hole; 10, metallic vias; 11, metal level; 12, inner wire; 13, metal flange; 14, insulating barrier; 15, screw hole.
Embodiment
Further specify below in conjunction with accompanying drawing, and unrestricted scope involved in the present invention.
To shown in Figure 6, to shown in Figure 4, the present invention includes medium substrate 3 referring to Fig. 1 referring to Fig. 1; Shell 1 and connector 6; Said medium substrate 3 is rectangle, and is provided with main transmission line on the top of medium substrate 3, on main transmission line, is provided with main transmission line conduction band 2; Said main transmission line conduction band 2 is the metal conduction band, and main transmission line conduction band 2 is 50 ohm a suspended mictrostrip.
Be provided with resonator 4 in the bottom of medium substrate 3, said resonator 4 is the metal conduction band, the quarter-wave long spacing of being separated by between the adjacent resonators 4.Edge, long limit at said medium substrate 3 is provided with metal level 11, installing hole 9 and metallic vias 10; Installing hole 9 makes things convenient for screw insert to install, and said shell 1 is made up of two parts up and down, and medium substrate 3 is arranged between lower casing two parts; Two parts of said shell 1 are fixing by screw 8; Centre at shell 1 two ends is provided with connector 6, and the medium of connector 6 through walls 7 is inserted on the housing, and connector inner wire 5 is weldingly connected with main transmission line conduction band 2.Connector 6 is installed on the shell through metal flange 13 and flange screw.
Said connector 6 comprises insulating barrier 14, inner wire 12 and metal flange 13, and said insulating barrier 14 is cylindrical, is positioned at metal flange 13 inside, and said inner wire 12 passes the axis of insulating barrier 14, on said metal flange 13, is provided with screw hole 15, is convenient to fix.
Do not changing under the resonator 4 resonance frequency situation, can regulate the size that overlaps area, the power of control capacittance coupling, thus it is big or small with the coupling of main transmission line in a big way, to regulate resonator 4.The coupling circuit size of each resonator 4 and main transmission line rationally is set, can realizes the stopband of certain bandwidth.
Claims (4)
1. a suspended substrate stripline band stop filter is characterized in that: comprise medium substrate, shell and connector; Said medium substrate is rectangle, and is provided with main transmission line on the top of medium substrate, is provided with resonator in the bottom of medium substrate; On main transmission line, be provided with the main transmission line conduction band, be provided with metal level, installing hole and metallic vias at the edge, long limit of said medium substrate, said shell is made up of two parts up and down; Medium substrate is arranged between lower casing two parts, and last lower casing and said metal level can be electrically connected, and are grounded; Centre at the shell two ends is provided with connector, and said connector is connected with main transmission line.
2. suspended substrate stripline band stop filter according to claim 1 is characterized in that: said main transmission line conduction band is the metal conduction band, and said resonator is the metal conduction band.
3. suspended substrate stripline band stop filter according to claim 1 and 2 is characterized in that: said resonator is a bending-type quarter-wave resonance device, and an end links to each other with said metal level; Be grounded; The main transmission line on the other end and medium substrate top is relative, realizes capacitive coupling, and the interlude of said resonator is parallel with main transmission line; Realize parallel coupling, the spacing of being separated by between adjacent two resonators is the spacing of 1/4th guide wavelengths.
4. suspended substrate stripline band stop filter according to claim 3 is characterized in that: main transmission line is that characteristic impedance is 50 ohm a suspended mictrostrip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100963946A CN102637929A (en) | 2012-03-29 | 2012-03-29 | Band stop filter with suspension line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100963946A CN102637929A (en) | 2012-03-29 | 2012-03-29 | Band stop filter with suspension line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102637929A true CN102637929A (en) | 2012-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100963946A Pending CN102637929A (en) | 2012-03-29 | 2012-03-29 | Band stop filter with suspension line |
Country Status (1)
| Country | Link |
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| CN (1) | CN102637929A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107134615A (en) * | 2017-06-15 | 2017-09-05 | 中国人民解放军空军工程大学 | A kind of dual-passband suspended mictrostrip filter based on electric Meta Materials |
| CN107317073A (en) * | 2017-06-23 | 2017-11-03 | 电子科技大学 | A kind of wave filter based on additional electric coupling circuit/combiner power capacity lift technique |
| CN108631740A (en) * | 2017-03-22 | 2018-10-09 | 瑞昱半导体股份有限公司 | The design method of double capacitance bottoms filter and double capacitance bottoms filter |
| CN108736116A (en) * | 2017-04-21 | 2018-11-02 | 上海诺基亚贝尔股份有限公司 | A kind of suspended stripline filter |
| CN112652870A (en) * | 2019-10-10 | 2021-04-13 | 天津大学 | Metamaterial filter structure based on dielectric integrated suspension line |
| CN112993498A (en) * | 2021-02-10 | 2021-06-18 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Suspension strip line ultra-wideband adjustable zero-point band-pass filter |
| CN113922016A (en) * | 2020-07-09 | 2022-01-11 | 大富科技(安徽)股份有限公司 | Filter and communication equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2613065Y (en) * | 2003-04-23 | 2004-04-21 | 东南大学 | TEM wave band stop filter with loaded capacitor |
| US20040246071A1 (en) * | 2003-06-05 | 2004-12-09 | Kathrein-Werke Kg | Radio-frequency filter, in particular in the form of a duplex filter |
| KR20090032187A (en) * | 2007-09-27 | 2009-04-01 | 전자부품연구원 | Broadband filter with suspended substrate structure |
| CN201570570U (en) * | 2009-12-02 | 2010-09-01 | 成都联帮微波通信工程有限公司 | Mini-type broadband suspension line filter |
-
2012
- 2012-03-29 CN CN2012100963946A patent/CN102637929A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2613065Y (en) * | 2003-04-23 | 2004-04-21 | 东南大学 | TEM wave band stop filter with loaded capacitor |
| US20040246071A1 (en) * | 2003-06-05 | 2004-12-09 | Kathrein-Werke Kg | Radio-frequency filter, in particular in the form of a duplex filter |
| KR20090032187A (en) * | 2007-09-27 | 2009-04-01 | 전자부품연구원 | Broadband filter with suspended substrate structure |
| CN201570570U (en) * | 2009-12-02 | 2010-09-01 | 成都联帮微波通信工程有限公司 | Mini-type broadband suspension line filter |
Non-Patent Citations (2)
| Title |
|---|
| J. MARTE 等: "Microstrip bandstop filters using cross-over capacitive coupling", 《ELECTRONICS LETTERS》, vol. 34, no. 9, 30 April 1998 (1998-04-30), pages 867 - 868, XP006009681, DOI: doi:10.1049/el:19980637 * |
| WOLFGANG MENZEL 等: "FOLDED STUBS FOR COMPACT SUSPENDED STRIPLINE CIRCUITS", 《MICROWAVE SYMPOSIUM DIGEST, 1993., IEEE MTT-S INTERNATIONAL》, 18 June 1993 (1993-06-18), pages 593 - 596 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108631740A (en) * | 2017-03-22 | 2018-10-09 | 瑞昱半导体股份有限公司 | The design method of double capacitance bottoms filter and double capacitance bottoms filter |
| CN108631740B (en) * | 2017-03-22 | 2021-10-29 | 瑞昱半导体股份有限公司 | Design method of double-capacitor bottom filter and double-capacitor bottom filter |
| CN108736116A (en) * | 2017-04-21 | 2018-11-02 | 上海诺基亚贝尔股份有限公司 | A kind of suspended stripline filter |
| CN108736116B (en) * | 2017-04-21 | 2019-12-03 | 上海诺基亚贝尔股份有限公司 | A kind of suspended stripline filter |
| CN107134615A (en) * | 2017-06-15 | 2017-09-05 | 中国人民解放军空军工程大学 | A kind of dual-passband suspended mictrostrip filter based on electric Meta Materials |
| CN107134615B (en) * | 2017-06-15 | 2019-08-09 | 中国人民解放军空军工程大学 | A kind of dual-passband suspended mictrostrip filter based on electric Meta Materials |
| CN107317073A (en) * | 2017-06-23 | 2017-11-03 | 电子科技大学 | A kind of wave filter based on additional electric coupling circuit/combiner power capacity lift technique |
| CN112652870A (en) * | 2019-10-10 | 2021-04-13 | 天津大学 | Metamaterial filter structure based on dielectric integrated suspension line |
| CN113922016A (en) * | 2020-07-09 | 2022-01-11 | 大富科技(安徽)股份有限公司 | Filter and communication equipment |
| CN112993498A (en) * | 2021-02-10 | 2021-06-18 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Suspension strip line ultra-wideband adjustable zero-point band-pass filter |
| CN112993498B (en) * | 2021-02-10 | 2022-05-17 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Suspension strip line ultra-wideband adjustable zero-point band-pass filter |
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Application publication date: 20120815 |