CN201355633Y - Screwed joint type log-periodic dipole antenna - Google Patents
Screwed joint type log-periodic dipole antenna Download PDFInfo
- Publication number
- CN201355633Y CN201355633Y CNU2008201997385U CN200820199738U CN201355633Y CN 201355633 Y CN201355633 Y CN 201355633Y CN U2008201997385 U CNU2008201997385 U CN U2008201997385U CN 200820199738 U CN200820199738 U CN 200820199738U CN 201355633 Y CN201355633 Y CN 201355633Y
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- alloy pipe
- antenna
- screw bolt
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Abstract
The utility model relates to a log-periodic antenna, in particular to a screwed joint type log-periodic dipole antenna which comprises a plurality of antenna elements which are fixed on an aluminum alloy pipe. The utility model is characterized in that mounting holes are formed on the aluminum alloy pipe; a double-screw bolt of which the diameter is smaller than the diameter of an antenna element is arranged at one end of each antenna element; the diameter of each double-screw bolt is equal to the diameter of each mounting hole, and the length of each double-screw bolt is larger than the width of the aluminum alloy pipe; each double-screw bolt is penetrated into each mounting hole and is exposed from the other surface of the aluminum alloy pipe; and a screw cap is arranged at the exposed part of each double-screw bolt. The double-screw bolt of which the diameter is smaller than the diameter of an antenna element is arranged at the end part of each antenna element, the diameter of each double-screw bolt is equal to the diameter of each mounting hole on the aluminum alloy pipe, and the screw cap has a fastening function, and therefore, each antenna element can be firmly connected to the aluminum alloy pipe. The falling problem of the antenna elements in the using process is effectively avoided, and the using effect is greatly improved.
Description
Technical field
The utility model is a kind of logarithm periodic antenna, particularly a kind of bolt connection type Log Periodic Dipole Antenna.
Background technology
The logarithm periodic antenna kind is a lot, and forms such as Log Periodic Dipole Antenna and unipole antenna, logarithm period resonance v antenna, logarithm period helical antenna are arranged, wherein Log Periodic Dipole Antenna the most generally.These antenna is widely used for shortwave and the above wave band of shortwave.Log Periodic Dipole Antenna is made of a plurality of antenna oscillators that are fixed on the aluminium-alloy pipe, and antenna oscillator is by an aluminum alloy round bar construction, and it comes feed by an even two-wire line.In the prior art, the fixing means of antenna oscillator on aluminium-alloy pipe has following several:
One. annular knurl
This method is earlier antenna oscillator to be carried out annular knurl, then an end of antenna oscillator annular knurl is filled in the installing hole of accomplishing fluently in advance on the aluminium-alloy pipe firmly.Because installing hole is to beat according to the size before the antenna oscillator annular knurl, and the annular knurl place diameter of antenna oscillator can become greatly, so after an end plug of antenna oscillator annular knurl is gone into installing hole, can antenna oscillator is fixed on the aluminium-alloy pipe by mechanical friction power.But this method has a lot of shortcomings, at first is very high to the requirement of aluminium-alloy pipe drilling technology, can not beat greatly, has beaten big and just directly aluminium alloy bars has been passed easily, and lost fixing effect; Next is high to the material requirement of antenna oscillator, if the material of antenna oscillator is soft partially, after it is processed through annular knurl, when waiting to penetrate the installing hole on the aluminium-alloy pipe, be easy to be worn and lose fixing meaning,, be easy to just come off outdoor exposing to wind and rain even install reluctantly.
Two. metalwork is fixed
This method is to utilize model to stamp out effigurate ironware, again to after the antenna oscillator groove milling, utilizes the mechanical force of ironware that it is locked, this method complex process, and cost is than higher.
Summary of the invention
The purpose of this utility model is for the oscillator that overcomes existing Log Periodic Dipole Antenna installs and fixes processing difficulties, complex process, the defect of high cost that exists in the process, invents a kind of bolt connection type Log Periodic Dipole Antenna that directly utilizes nut that antenna oscillator is fixed.
The purpose of this utility model realizes as follows: described bolt connection type Log Periodic Dipole Antenna, constitute by a plurality of antenna oscillators that are fixed on the aluminium-alloy pipe, it is characterized in that: have installing hole on the described aluminium-alloy pipe, one end of antenna oscillator is the double-screw bolt of diameter less than the antenna oscillator diameter, the diameter of double-screw bolt equals the diameter of installing hole, the length of double-screw bolt is greater than the width of aluminium-alloy pipe, double-screw bolt is arranged in the installing hole and exposes from the another side of aluminium-alloy pipe, is provided with nut at the position of exposing.
Good effect of the present utility model is as follows: because the end of antenna oscillator is the double-screw bolt of diameter less than the antenna oscillator diameter, and the diameter of double-screw bolt equals the diameter of installing hole on the aluminium-alloy pipe, add the fastening effect of nut, so what antenna oscillator can be very firm is connected on the aluminium-alloy pipe, effectively prevent the problem that comes off that antenna oscillator in use occurs, greatly improved the effect of using.
Description of drawings
Fig. 1 is the utility model outside drawing
Fig. 2 is the installation diagram of antenna oscillator and aluminium-alloy pipe
Among the figure: 1 aluminium-alloy pipe, 2 antenna oscillators, 3 installing holes
4 double-screw bolts, 5 nuts
Embodiment
As shown in Figure 1, described bolt connection type Log Periodic Dipole Antenna, constitute by a plurality of antenna oscillators 2 that are fixed on the aluminium-alloy pipe 1, as shown in Figure 2, have installing hole 3 on the aluminium-alloy pipe 1, an end of antenna oscillator 2 is diameter double-screw bolts 4 less than antenna oscillator 2 diameters, the diameter of double-screw bolt 4 equals the diameter of installing hole 3, the length of double-screw bolt 4 is greater than the width of aluminium-alloy pipe 1, and double-screw bolt 4 is arranged in the installing hole 3 and exposes from the another side of aluminium-alloy pipe 1, is provided with nut 5 at the position of exposing.
During use, antenna oscillator comes feed by an even two-wire line.The utility model is widely used for shortwave and the above wave band of shortwave.
Claims (1)
1. bolt connection type Log Periodic Dipole Antenna, constitute by a plurality of antenna oscillators that are fixed on the aluminium-alloy pipe, it is characterized in that: have installing hole on the described aluminium-alloy pipe, one end of antenna oscillator is the double-screw bolt of diameter less than the antenna oscillator diameter, the diameter of double-screw bolt equals the diameter of installing hole, the length of double-screw bolt is greater than the width of aluminium-alloy pipe, and double-screw bolt is arranged in the installing hole and exposes from the another side of aluminium-alloy pipe, is provided with nut at the position of exposing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201997385U CN201355633Y (en) | 2008-12-27 | 2008-12-27 | Screwed joint type log-periodic dipole antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201997385U CN201355633Y (en) | 2008-12-27 | 2008-12-27 | Screwed joint type log-periodic dipole antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201355633Y true CN201355633Y (en) | 2009-12-02 |
Family
ID=41411977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201997385U Expired - Fee Related CN201355633Y (en) | 2008-12-27 | 2008-12-27 | Screwed joint type log-periodic dipole antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201355633Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103602954A (en) * | 2013-11-06 | 2014-02-26 | 深圳市华星光电技术有限公司 | Strut member used for anode bar of magnetron sputtering device and magnetron sputtering device comprising strut member |
| CN104218299A (en) * | 2014-08-14 | 2014-12-17 | 菲力克斯电子（宁波）有限公司 | Antenna and assembling method thereof |
| CN105337042A (en) * | 2015-10-16 | 2016-02-17 | 天津七六四通信导航技术有限公司 | Log-periodic antenna applied in meter wave frequency band |
-
2008
- 2008-12-27 CN CNU2008201997385U patent/CN201355633Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103602954A (en) * | 2013-11-06 | 2014-02-26 | 深圳市华星光电技术有限公司 | Strut member used for anode bar of magnetron sputtering device and magnetron sputtering device comprising strut member |
| CN103602954B (en) * | 2013-11-06 | 2016-02-24 | 深圳市华星光电技术有限公司 | For magnetron sputtering anode bar strut member and comprise its magnetic control sputtering device |
| CN104218299A (en) * | 2014-08-14 | 2014-12-17 | 菲力克斯电子（宁波）有限公司 | Antenna and assembling method thereof |
| CN105337042A (en) * | 2015-10-16 | 2016-02-17 | 天津七六四通信导航技术有限公司 | Log-periodic antenna applied in meter wave frequency band |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091202 Termination date: 20101227 |