CN106785252A - New resistance filter apparatus - Google Patents
New resistance filter apparatus Download PDFInfo
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- CN106785252A CN106785252A CN201510808395.2A CN201510808395A CN106785252A CN 106785252 A CN106785252 A CN 106785252A CN 201510808395 A CN201510808395 A CN 201510808395A CN 106785252 A CN106785252 A CN 106785252A
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- transmission line
- medium substrate
- main transmission
- resonator
- connector
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Abstract
The present invention relates to a kind of new resistance filter apparatus, including medium substrate, shell and connector, the medium substrate is rectangle, main transmission line is provided with the top of medium substrate, resonator is provided with the bottom of medium substrate, main transmission line conduction band is provided with main transmission line, metal level is provided with the long side edge of the medium substrate, mounting hole and metallic vias, the shell is made up of upper and lower two parts, medium substrate is arranged between lower casing two parts, upper lower casing can be electrically connected with the metal level, it is grounded, connector is provided with the centre at shell two ends, the connector is connected with main transmission line.The main transmission line resonator of wave filter of the present invention can be separately positioned on the two sides of medium substrate, it can be parallel coupling between resonator and main transmission line, Capacitance Coupled can also be realized, can be used for realizing stopband wider, while also the bandwidth setting to hinder wave filter provides design freedom.
Description
Technical field
The present invention relates to a kind of wave filter, and in particular to a kind of new resistance filter apparatus.
Background technology
Due to the development of wireless communication system, there is more and more relatively crowded state in microwave frequency band, band resource divides more and more finer, the requirement of the degree of suppression such as noise, interference, spuious also increasingly increases, bandstop filter is used to filter unwanted clutter and noise signal in a communications system, to improve systematic function.In addition, bandstop filter is used for the spuious test of system, carrier signal is curbed, conduction stray of the measurement in other frequency ranges.Current bandstop filter mainly has micro-strip form and cavity body structure form.For from way of realization, because the Q values of micro-strip form resonator are low, the passband edge loss of the bandstop filter based on microstrip line is larger.Bandstop filter based on cavity body structure, although Q values are higher, be lost it is small, but its complex structure, process high with design cost, and the assembling of wave filter and debug error and can influence the performance of wave filter.
The content of the invention
Instant invention overcomes the deficiencies in the prior art, propose a kind of new resistance filter apparatus, the main transmission line resonator of the wave filter can be separately positioned on the medium substrate two sides of suspension, not only there is parallel coupling between resonator and main transmission line, and Capacitance Coupled is may be incorporated into, can be used for realizing stopband wider.Also provide design freedom for the bandwidth of bandstop filter is set simultaneously.
The technical scheme is that：A kind of new resistance filter apparatus, including medium substrate, shell and connector, the medium substrate is rectangle, main transmission line is provided with the top of medium substrate, resonator is provided with the bottom of medium substrate, main transmission line conduction band is provided with main transmission line, metal level is provided with the long side edge of the medium substrate, mounting hole and metallic vias, the shell is made up of upper and lower two parts, medium substrate is arranged between lower casing two parts, upper lower casing can be electrically connected with the metal level, it is grounded, connector is provided with the centre at shell two ends, the connector is connected with main transmission line.
The main transmission line conduction band is metal conduction band, and the resonator is metal conduction band.
The resonator is bending-type quarter-wave resonance device, one end is connected with the metal level, it is grounded, the other end is relative with the main transmission line on medium substrate top, realize Capacitance Coupled, the interlude of the resonator is parallel with main transmission line, realizes parallel coupling, and the spacing that spacing is a quarter guide wavelength is separated by between two neighboring resonator.
Main transmission line is suspended mictrostrip that characteristic impedance is 50 ohm.
The connector includes metal flange, insulating barrier, inner wire, and in cylinder, inside metal flange, the inner wire is provided with screw hole to the insulating barrier through the axis of insulating barrier on the metal flange.
The present invention has the advantages that：
1）The present invention is suitable with the size of microstrip structure, but the Q values of resonator are more much higher than microstrip structure, for designing bandstop filter, can reduce the loss of passband.
2）Main transmission line resonator of the invention can be separately positioned on the two sides of medium substrate, not only have parallel coupling between resonator and main transmission line, it is also possible to introduce Capacitance Coupled, can be used for realizing stopband wider.Also provide design freedom for the bandwidth of bandstop filter is set simultaneously.
3）The present invention uses PCB processing technologys.
4）Bandstop filter relative to cavity body structure of the invention, simple structure, cost is lower.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is longitudinal cross-section structural representation of the invention.
Fig. 2 is horizontal cross-section structure diagram of the invention.
Fig. 3 is internal structure front schematic view of the invention.
Fig. 4 is internal structure schematic rear view of the invention.
Fig. 5 is connector transversary schematic diagram of the invention.
Fig. 6 is connector vertical structure schematic diagram of the invention.
In figure, 1, shell；2nd, main transmission line conduction band；3rd, medium substrate；4th, resonator；5th, connector inner wire；6 connectors；7th, medium is through walls；8th, screw；9th, mounting hole；10th, metallic vias；11st, metal level；12nd, inner wire；13rd, metal flange；14th, insulating barrier；15th, screw hole.
Specific embodiment
Further illustrated below in conjunction with accompanying drawing, not limit scope involved in the present invention.
Referring to shown in Fig. 1 to Fig. 6, referring to shown in Fig. 1 to Fig. 4, the present invention includes medium substrate 3, shell 1 and connector 6, the medium substrate 3 is rectangle, and main transmission line is provided with the top of medium substrate 3, and main transmission line conduction band 2 is provided with main transmission line, the main transmission line conduction band 2 is metal conduction band, and main transmission line conduction band 2 is 50 ohm of suspended mictrostrip.
Resonator 4 is provided with the bottom of medium substrate 3, the resonator 4 is metal conduction band, and quarter-wave long spacing is separated by between adjacent resonators 4.Metal level 11, mounting hole 9 and metallic vias 10 are provided with the long side edge of the medium substrate 3, mounting hole 9 facilitates screw to insert installation, the shell 1 is made up of upper and lower two parts, medium substrate 3 is arranged between lower casing two parts, two parts of the shell 1 are fixed by screw 8, connector 6 is provided with the centre at the two ends of shell 1, the medium through walls 7 of connector 6 is inserted on housing, and connector inner wire 5 is weldingly connected with main transmission line conduction band 2.Connector 6 is installed on shell by metal flange 13 and flange screw.
Resonator 4 is bending-type quarter-wave resonance device, and one end is connected with the metal level 11 at medium substrate long side edge, is grounded, the other end is relative with the main transmission line coincidence on medium substrate top, Capacitance Coupled is realized, the interlude of the resonator is parallel with main transmission line, realizes parallel coupling.
The connector 6 includes insulating barrier 14, inner wire 12 and metal flange 13, and in cylinder, inside metal flange 13, the inner wire 12 is provided with screw hole 15 to the insulating barrier 14 through the axis of insulating barrier 14 on the metal flange 13, is easy to fix.
In the case of the resonant frequency of resonator 4 is not changed, the size of overlapping area can be adjusted, adjust capacity coupled power, so as in the coupling size of interior regulation resonator 4 and main transmission line in a big way.The termination power size of each resonator 4 and main transmission line is rationally set, it is possible to achieve the stopband of certain bandwidth.
Claims (2)
1. a kind of new resistance filter apparatus, it is characterised in that：Including medium substrate, shell and connector, the medium substrate is rectangle, main transmission line is provided with the top of medium substrate, resonator is provided with the bottom of medium substrate, main transmission line conduction band is provided with main transmission line, metal level is provided with the long side edge of the medium substrate, mounting hole and metallic vias, the shell is made up of upper and lower two parts, medium substrate is arranged between lower casing two parts, upper lower casing can be electrically connected with the metal level, it is grounded, connector is provided with the centre at shell two ends, the connector is connected with main transmission line.
2. new resistance filter apparatus according to claim 1, it is characterised in that：The main transmission line conduction band is metal conduction band, and the resonator is metal conduction band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510808395.2A CN106785252A (en) | 2015-11-20 | 2015-11-20 | New resistance filter apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510808395.2A CN106785252A (en) | 2015-11-20 | 2015-11-20 | New resistance filter apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106785252A true CN106785252A (en) | 2017-05-31 |
Family
ID=58886458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510808395.2A Pending CN106785252A (en) | 2015-11-20 | 2015-11-20 | New resistance filter apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106785252A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107658533A (en) * | 2017-10-20 | 2018-02-02 | 京信通信系统（中国）有限公司 | Bandstop filter and radio-frequency devices |
| CN109687066A (en) * | 2018-12-29 | 2019-04-26 | 南京邮电大学 | A kind of miniature ultra wide band plane bandstop filter |
-
2015
- 2015-11-20 CN CN201510808395.2A patent/CN106785252A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107658533A (en) * | 2017-10-20 | 2018-02-02 | 京信通信系统（中国）有限公司 | Bandstop filter and radio-frequency devices |
| CN109687066A (en) * | 2018-12-29 | 2019-04-26 | 南京邮电大学 | A kind of miniature ultra wide band plane bandstop filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170531 |