CN101859919A - 1/4 wavelength arrester for mobile antenna feed system - Google Patents
1/4 wavelength arrester for mobile antenna feed system Download PDFInfo
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- CN101859919A CN101859919A CN201010169893A CN201010169893A CN101859919A CN 101859919 A CN101859919 A CN 101859919A CN 201010169893 A CN201010169893 A CN 201010169893A CN 201010169893 A CN201010169893 A CN 201010169893A CN 101859919 A CN101859919 A CN 101859919A
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- wavelength
- short
- resonant cavity
- arrester
- antenna feed
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Abstract
The invention discloses a 1/4 wavelength arrester for a mobile antenna feed system, which comprises a 1/4 wavelength resonant cavity. A short-circuit rod is arranged in the 1/4 wavelength resonant cavity and is a helical short-circuit rod. The conventional straight-through short-circuit rod is replaced by the helical short-circuit rod, so that the requirement of continuously widened operating frequency range can be met without lengthening the resonant cavity, and the volume of the arrester is prevented from continuously enlarging so as not to increase the production cost.
Description
Technical field
The present invention relates to 1/4 wavelength arrester in a kind of mobile antenna feed system.
Background technology
In antenna-feedback system, because antenna installation is in outdoor high-altitude, the possibility of introducing thunder and lightning through coaxial cable from antenna is very big, along with we to thunder and lightning characteristic and harm thereof constantly after the understanding, lightning-arrest lightning protection has become common recognition.Coaxial lightning arrester has been a part indispensable in each communication base station.Present most popular lightning arrester is a kind of 1/4 wavelength coaxial lightning arrester, and 1/4 wavelength arrester is exactly to constitute a band pass filter in the resonant cavity of one 1/4 wavelength, as short circuit, and equals open circuit for signal end for low-frequency lightning current.Thunderbolt has lower frequency, 1/4 wavelength resonant cavity is drawn inner wire just as a short circuit line with lightning current, guides the earth into by outer conductor and grounding system, so the performance of 1/4 wavelength arrester not only influences communication quality, the equipment in the base station that also protected is not simultaneously punctured by thunder and lightning.
The short-circuit rods of present 1/4 wavelength arrester resonant cavity is the smooth cylindrical bar of 1/4 wavelength, along with using constantly widening of frequency range, the resonant cavity of 1/4 wavelength needs lengthening constantly, make the volume of lightning arrester constantly increase like this, production cost is also increasing, owing to the influence of factors such as processing and assembling, the volume of every lightning arrester all needs to finely tune simultaneously, and production efficiency is low.
Summary of the invention
Goal of the invention: the objective of the invention is at the deficiencies in the prior art, provide that a kind of volume is little, the mobile antenna feed system of regulation free type 1/4 wavelength arrester.
Technical scheme: mobile antenna feed system of the present invention 1/4 wavelength arrester, comprise 1/4 wavelength resonant cavity, be provided with short-circuit rods in described 1/4 wavelength resonant cavity, described short-circuit rods is the spiral type short-circuit rods.
The spiral type short-circuit rods is similar to spring, has certain elasticity, so after the top is press-fitted upper press cover, slight distortion may take place in the spiral type short-circuit rods, cause internal and external conductor decentraction in the resonant cavity, influence electric property,, in described 1/4 wavelength resonant cavity, be filled with insulation and support in order to overcome this defective.
In order to save cost, described insulation support the bottom that is filled in described short-circuit rods around, both can reduce the decentraction that causes because of the compression of spiral short-circuit rods, simultaneously, the dielectric constant that also increases resonant cavity is supported in the insulation of filling, and can further shorten the length of resonant cavity.Described insulation is supported for non-conductive and does not inhale the polytetrafluoroethylmaterial material of ripple.
Beneficial effect: the present invention compared with prior art, its beneficial effect is: 1, the present invention adopts the spiral type short-circuit rods to replace original through-type short-circuit rods, thereby the length of the resonant cavity that do not need to extend just can satisfy the needs that use frequency range constantly to widen, avoid the volume of lightning arrester constantly to increase, increase production cost; 2, the present invention supports by fill insulation in resonant cavity, not only solved the problem that slight distortion may take place the spiral type short-circuit rods, and increased the dielectric constant of resonant cavity, and can further shorten the length of resonant cavity, can also strengthen the mechanical strength of spiral type short-circuit rods simultaneously; 3, the present invention's 1/4 wavelength arrester not only return loss, insert excellent electrical properties such as loss, third order intermodulation, and in light weight, cost is low, conformity of production is good, the production efficiency height; 4, whole erection process of the present invention is simple and convenient, workable, and high conformity can effectively improve the communication quality in the service area.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, by a most preferred embodiment, technical solution of the present invention is elaborated, but protection scope of the present invention is not limited to described embodiment.
As shown in the figure, a kind of mobile antenna feed system 1/4 wavelength arrester, comprise horizontal inner wire 4, laterally outer conductor 5, vertically outer conductor 6,1/4 wavelength resonant cavity 1 and ground connection annex 7,8, laterally directly closely be connected between outer conductor 5 and the vertical outer conductor 6 by screw thread; Laterally there is the coaxial interface of standard at the two ends of outer conductor 5; Be provided with short-circuit rods 2 in described 1/4 wavelength resonant cavity 1, described short-circuit rods 2 is the spiral type short-circuit rods, adopts the inner wire of hollow-core construction, and the helicla flute that connects inside and outside having on tube wall obtains the spiral type short-circuit rods; Described spiral type short-circuit rods is processed by the good brass of electric conductivity; Being filled with insulation in described 1/4 wavelength resonant cavity 1 and supporting 3, considering cost factor, described insulation support 3 be filled in described short-circuit rods 2 the bottom around, it is polytetrafluoroethylmaterial material that described insulation supports 3.
Claims (4)
1. mobile antenna feed system 1/4 wavelength arrester comprises 1/4 wavelength resonant cavity (1), is provided with short-circuit rods (2) in described 1/4 wavelength resonant cavity (1), it is characterized in that: described short-circuit rods (2) is the spiral type short-circuit rods.
2. mobile antenna feed system 1/4 wavelength arrester according to claim 1 is characterized in that: be filled with insulation in described 1/4 wavelength resonant cavity (1) and support (3).
3. mobile antenna feed system 1/4 wavelength arrester according to claim 2 is characterized in that: described insulation support (3) be filled in described short-circuit rods (2) the bottom around.
4. according to claim 2 or 3 described mobile antenna feed systems, 1/4 wavelength arrester, it is characterized in that: described insulation is supported (3) and is polytetrafluoroethylmaterial material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010169893A CN101859919A (en) | 2010-05-12 | 2010-05-12 | 1/4 wavelength arrester for mobile antenna feed system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010169893A CN101859919A (en) | 2010-05-12 | 2010-05-12 | 1/4 wavelength arrester for mobile antenna feed system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101859919A true CN101859919A (en) | 2010-10-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010169893A Pending CN101859919A (en) | 2010-05-12 | 2010-05-12 | 1/4 wavelength arrester for mobile antenna feed system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101859919A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393391A (en) * | 2014-12-09 | 2015-03-04 | 中国电子科技集团公司第五十四研究所 | Low-frequency high-power resonator and electrically tunable band stop filter |
| CN115377710A (en) * | 2022-09-17 | 2022-11-22 | 杭州摩光通讯器材有限公司 | Parallel stacked lightning arrester with short circuit structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1284759A (en) * | 1999-08-05 | 2001-02-21 | 斯宾纳电子技术工厂有限公司 | Coaxial over-voltage protector |
| CN101252215A (en) * | 2008-03-06 | 2008-08-27 | 上海交通大学 | Microwave resonant cavity of inner conductor with spiral groove structure |
| CN201417808Y (en) * | 2009-05-08 | 2010-03-03 | 苏州市吴通科技有限公司 | Broadband lambda/4 single conductor radio frequency lightning arrester |
-
2010
- 2010-05-12 CN CN201010169893A patent/CN101859919A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1284759A (en) * | 1999-08-05 | 2001-02-21 | 斯宾纳电子技术工厂有限公司 | Coaxial over-voltage protector |
| CN101252215A (en) * | 2008-03-06 | 2008-08-27 | 上海交通大学 | Microwave resonant cavity of inner conductor with spiral groove structure |
| CN201417808Y (en) * | 2009-05-08 | 2010-03-03 | 苏州市吴通科技有限公司 | Broadband lambda/4 single conductor radio frequency lightning arrester |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393391A (en) * | 2014-12-09 | 2015-03-04 | 中国电子科技集团公司第五十四研究所 | Low-frequency high-power resonator and electrically tunable band stop filter |
| CN104393391B (en) * | 2014-12-09 | 2017-07-04 | 中国电子科技集团公司第五十四研究所 | A kind of low frequency high power resonator and electricity adjust bandstop filter |
| CN115377710A (en) * | 2022-09-17 | 2022-11-22 | 杭州摩光通讯器材有限公司 | Parallel stacked lightning arrester with short circuit structure |
| CN115377710B (en) * | 2022-09-17 | 2024-01-05 | 杭州摩光通讯器材有限公司 | Parallel stacked lightning arrester with short circuit structure |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101013 |