CN104716409A - Adjustable wideband filter device - Google Patents
Adjustable wideband filter device Download PDFInfo
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- CN104716409A CN104716409A CN201310719848.5A CN201310719848A CN104716409A CN 104716409 A CN104716409 A CN 104716409A CN 201310719848 A CN201310719848 A CN 201310719848A CN 104716409 A CN104716409 A CN 104716409A
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- inner wire
- spiral
- spiral inner
- coupling structure
- outer conductor
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Abstract
An adjustable wideband filter device is characterized by comprising spiral inner conductors, port coupling structures, an interstage coupling structure, an loading capacitor, outer conductors, insulation media, a threaded hole, a bolt, a metal ring, a knob and a clamping groove, wherein spiral resonant cavities are composed of the spiral inner conductors and the outer conductors, input signals enter the spiral resonant cavity connected with the port coupling structure of the input end from a coaxial inlet through the port coupling structure of the input end, and enter the spiral resonant cavity connected with the port coupling structure of the output end through the interstage coupling structure, the port coupling structure of the output end outputs the corresponding spiral inner conductor from a coaxial outlet and is supported through the insulation media, and threads matched with the spiral inner conductors are carved on the outer surface. The size of the loading capacitor can be adjusted through rotation of the knob, and therefore the parameters of the whole filter device can be adjusted, signals are adjusted more conveniently and can be adjusted according to external environment factors, and the application range is wider.
Description
Technical field
The present invention relates to a kind of adjustable wideband filtered apparatus.
Background technology
The filter used in VHF band communication field at present, comparatively common with LC filter.LC filter due to loss relative to comparatively large cavity body filter, Out-of-band rejection is relatively poor and cannot apply in high-power communication equipment; Although coupling coaxial cavity filter cavity Q value is higher, loss is less, and because frequency range is lower, volume and weight is too large and make it apply to be restricted.VHF high-power spiral band stop filter is also succeeded in developing, its passband and stopband rejection better, in point-to-point communication, performance is good, but because its bandwidth of rejection is narrower and be all-pass band and being very limited in networking application beyond stopband.Along with the develop rapidly of the communication technology; in communication system applications; also usually development demand can be suggested to the requirement that some technical indicators such as degree of suppression is higher, relative bandwidth is wider of filter; electronic component also can change for the change of external environment condition simultaneously, and filter effect is deteriorated.
Summary of the invention
Technical problem solved by the invention is to provide a kind of adjustable wideband filtered apparatus, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A kind of adjustable wideband filtered apparatus, comprise spiral inner wire, port coupled structure, interstage coupling structure, loading capacitance, outer conductor, dielectric, screwed hole, bolt, becket, knob and draw-in groove, described spiral resonant cavity is made up of spiral inner wire and outer conductor, described input signal enters into through the port coupled structure of input the spiral resonant cavity be attached thereto from coaxial inlet, by interstage coupling structure, enter the spiral resonant cavity be connected with the port coupled structure of output, the port coupled structure of described output exports spiral inner wire from axis outlet and adopts dielectric to support, its outer surface is carved with the screw thread matched with spiral inner wire, the short-circuit end of described spiral inner wire is welded on outer conductor, open end is welded on loading capacitance, spiral inner wire in described outer conductor is around to unanimously, port coupled structure is tap form, one end of tap is welded on spiral inner wire, the other end of tap is welded on and inputs or outputs on coaxial port inner wire, silver-coated copper wire is adopted to connect between described interstage coupling structure and corresponding loading capacitance, loading capacitance is the disc-shaped structure that can regulate continuously, its capacitance sheet of interstage coupling structure is capacity plate antenna structure, each capacity plate antenna is adjustable rectangle or thin rounded flakes structure, and it is symmetrical about spiral inner wire.
A nearly step, the bottom of outer conductor is provided with draw-in groove, and draw-in groove rotary moveable connects knob, knob is provided with bolt, be provided with screwed hole in described dielectric to be connected with bolt thread, described outer conductor inside is provided with becket, and becket and port coupled structure contact with spiral inner wire and connect.
As preferably, described knob is provided with scale, conveniently regulates.
Beneficial effect: this device regulates loading capacitance size by the rotation of knob, thus can regulate the parameter of filter apparatus really, convenient Signal Regulation, and can regulate according to outside environmental elements, range of application is wider simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
A kind of adjustable wideband filtered apparatus, comprise spiral inner wire 1, port coupled structure 2, interstage coupling structure 3, loading capacitance 4, outer conductor 5, dielectric 6, screwed hole 7, bolt 8, becket 9, knob 10 and draw-in groove 11, described spiral resonant cavity is made up of spiral inner wire 1 and outer conductor 5, described input signal enters into through the port coupled structure 2 of input the spiral resonant cavity be attached thereto from coaxial inlet, by interstage coupling structure 3, enter the spiral resonant cavity be connected with the port coupled structure 2 of output, the port coupled structure 2 of described output exports spiral inner wire 1 from axis outlet and adopts dielectric 6 to support, its outer surface is carved with the screw thread matched with spiral inner wire 1, the short-circuit end of described spiral inner wire 1 is welded on outer conductor 5, open end is welded on loading capacitance 4, spiral inner wire 1 in described outer conductor is around to unanimously, port coupled structure 2 is tap form, one end of tap is welded on spiral inner wire 1, the other end of tap is welded on and inputs or outputs on coaxial port inner wire, silver-coated copper wire is adopted to connect between described interstage coupling structure 3 and corresponding loading capacitance 4, loading capacitance 4 is the disc-shaped structure that can regulate continuously, its capacitance sheet of interstage coupling structure 3 is capacity plate antenna structure, each capacity plate antenna is adjustable rectangle or thin rounded flakes structure, and it is symmetrical about spiral inner wire.
A nearly step, the bottom of outer conductor 5 is provided with draw-in groove 11, draw-in groove 11 rotary moveable connects knob 10, knob 10 is provided with bolt 8, be provided with screwed hole 7 in described dielectric 6 to be threaded with bolt 8, described outer conductor 5 inside is provided with becket 9, and becket 9 and port coupled structure 2 contact with spiral inner wire 1 and connect.
As preferably, described knob 10 is provided with scale, conveniently regulates.
This device regulates loading capacitance 4 size by the rotation of knob 10, thus can regulate the parameter of filter apparatus really, convenient Signal Regulation, and can regulate according to outside environmental elements, range of application is wider simultaneously.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. an adjustable wideband filtered apparatus, it is characterized in that, comprise spiral inner wire, port coupled structure, interstage coupling structure, loading capacitance, outer conductor, dielectric, screwed hole, bolt, becket, knob and draw-in groove, described spiral resonant cavity is made up of spiral inner wire and outer conductor, described input signal enters into through the port coupled structure of input the spiral resonant cavity be attached thereto from coaxial inlet, by interstage coupling structure, enter the spiral resonant cavity be connected with the port coupled structure of output, the port coupled structure of described output exports spiral inner wire from axis outlet and adopts dielectric to support, its outer surface is carved with the screw thread matched with spiral inner wire, the short-circuit end of described spiral inner wire is welded on outer conductor, open end is welded on loading capacitance, spiral inner wire 1 in described outer conductor is around to unanimously, port coupled structure is tap form, one end of tap is welded on spiral inner wire, the other end of tap is welded on and inputs or outputs on coaxial port inner wire, silver-coated copper wire is adopted to connect between described interstage coupling structure and corresponding loading capacitance, loading capacitance is the disc-shaped structure that can regulate continuously, its capacitance sheet of interstage coupling structure is capacity plate antenna structure, each capacity plate antenna is adjustable rectangle or thin rounded flakes structure, and it is symmetrical about spiral inner wire, the bottom of outer conductor is provided with draw-in groove, draw-in groove rotary moveable connects knob, knob is provided with bolt, be provided with screwed hole in described dielectric to be connected with bolt thread, described outer conductor inside is provided with becket, becket and port coupled structure contact with spiral inner wire and connect.
2. the adjustable wideband filtered apparatus of one according to claim 1, it is characterized in that, described knob is provided with scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310719848.5A CN104716409A (en) | 2013-12-17 | 2013-12-17 | Adjustable wideband filter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310719848.5A CN104716409A (en) | 2013-12-17 | 2013-12-17 | Adjustable wideband filter device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104716409A true CN104716409A (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310719848.5A Pending CN104716409A (en) | 2013-12-17 | 2013-12-17 | Adjustable wideband filter device |
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| CN (1) | CN104716409A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110365304A (en) * | 2019-07-30 | 2019-10-22 | 成都频岢微电子有限公司 | A kind of branch's filter |
| CN112305652A (en) * | 2019-07-26 | 2021-02-02 | 南京大学 | Infrared filter |
| CN114563746A (en) * | 2022-04-27 | 2022-05-31 | 中国科学院精密测量科学与技术创新研究院 | Hydraulic automatic tuning device and method for nuclear magnetic resonance probe |
-
2013
- 2013-12-17 CN CN201310719848.5A patent/CN104716409A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305652A (en) * | 2019-07-26 | 2021-02-02 | 南京大学 | Infrared filter |
| CN110365304A (en) * | 2019-07-30 | 2019-10-22 | 成都频岢微电子有限公司 | A kind of branch's filter |
| CN110365304B (en) * | 2019-07-30 | 2023-05-09 | 成都频岢微电子有限公司 | Branch filter |
| CN114563746A (en) * | 2022-04-27 | 2022-05-31 | 中国科学院精密测量科学与技术创新研究院 | Hydraulic automatic tuning device and method for nuclear magnetic resonance probe |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150617 |