CN201540950U - Double-frequency external antenna and fixed station - Google Patents
Double-frequency external antenna and fixed station Download PDFInfo
- Publication number
- CN201540950U CN201540950U CN2009202604941U CN200920260494U CN201540950U CN 201540950 U CN201540950 U CN 201540950U CN 2009202604941 U CN2009202604941 U CN 2009202604941U CN 200920260494 U CN200920260494 U CN 200920260494U CN 201540950 U CN201540950 U CN 201540950U
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- China
- Prior art keywords
- sleeve pipe
- coaxial cable
- chokes sleeve
- chokes
- external antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
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- 238000009413 insulation Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 101100433727 Caenorhabditis elegans got-1.2 gene Proteins 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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Abstract
The utility model is applicable in wireless communication, and provides a double-frequency external antenna and a fixed station. The double-frequency external antenna comprises an outer cover, a coaxial cable arranged in the outer cover and a cable joint assembly connected with the outer cover; choking sleeves electrically connected with a shielding layer are sleeved outside the coaxial cable, and the number of the choking sleeves is at least two with different lengths and diameters; the front end of the choking sleeve is provided with a metal tube electrically connected with a core wire of the coaxial cable; and the tail end of the core wire of the coaxial cable is provided with a spiral spring. The fixed station comprises the double-frequency external antenna. Double-frequency (900/1,800MHz) choke is realized by adopting the double choking sleeves, the influence of current on the outer surface of the coaxial cable on the fixed station is reduced through choking, balanced feedback and double-frequency work are realized, and the performance of the antenna is improved. The metal tube widens the high-frequency bandwidth of the antenna, and improves the high-frequency performance. The spiral spring is more effective on high-frequency choke.
Description
Technical field
The utility model belongs to a kind of antenna and fixed station, relates in particular to a kind of double frequency external antenna and has the fixed station of this antenna.
Background technology
The cellular phone machine is called for short fixed station, briefly, a kind of exactly fixed telephone that need not draw telephone wire just can converse, the similar mobile phone of its working method can insert SIM card.Because signal quality is good, cruising time is long, cheap, fixed station is widely used in the area that remote mountain areas, rural area, inshore fishing, train and pleasure-boat etc. are difficult for putting up telephone lines.The development of mechanics of communication, the occasion that fixed station uses is more and more widely had higher requirement to antenna, and the standard of fixed station develops into present double frequency gradually by single-frequency in the past, and this just proposes new requirement to the antenna of its outfit.Traditional fixed station external antenna all is to adopt quarter-wave or half-wave dipole form, and the antenna of this form can only be realized single frequency operation, can't satisfy the bigger more effective frequency range requirement of communication apparatus.
High-frequency current by radio station output transmits to antenna direction along the heart yearn of coaxial cable and the inner surface of screen, and the two-way size of current equates that direction is opposite, is equilibrium state.Because high-frequency current has " skin effect ", the screen outer surface and the no current of coaxial cable flow through.But, except the most of energy that is radiated the space, also have the screen outer surface of sub-fraction " leakage ", and spread to the whole piece feeder line to coaxial cable when high-frequency current is transferred to after the antenna.So just cause the electric current disequilibrium of the heart yearn and the screen of coaxial cable, make the screen of feeder line also become the part of antenna radiator, worsened the parameter of antenna, the most significant is exactly to cause standing-wave ratio to increase, and is not easy to revise very much.
The utility model content
The purpose of this utility model is to provide a kind of double frequency external antenna and fixed station that possesses the two-frequency operation performance, is intended to solve the existing single problem of fixed station working method.
The utility model is to realize like this, a kind of double frequency external antenna, comprise: outer cover, be located at coaxial cable and the cable connector assembly that links to each other with described outer cover in the described outer cover, the outer sheathed chokes sleeve pipe that is electrically connected with its screen of described coaxial cable, described chokes sleeve pipe is made of at least two length chokes sleeve pipe different with diameter.
The sleeve pipe of chokes described in the utility model has the first chokes sleeve pipe and the second chokes sleeve pipe, and the length of the described first chokes sleeve pipe is longer than the length of the described second chokes sleeve pipe, and the described first chokes sleeve pipe and the second chokes sleeve pipe are all coaxial with coaxial cable.
The length of the first chokes sleeve pipe described in the utility model is the quarter-wave of 900MHz, and the length of the described second chokes sleeve pipe is the quarter-wave of 1800MHz; The diameter of the described first chokes sleeve pipe is littler than the diameter of the second chokes sleeve pipe.
The sleeve pipe of chokes described in the utility model front end is established the metal tube that is electrically connected with the heart yearn of described coaxial cable.
Establish insulating bushing between sleeve pipe of chokes described in the utility model and the described metal tube.
The heart yearn end of coaxial cable described in the utility model is provided with helical spring.
Another purpose of the utility model is achieved in that a kind of fixed station, comprises aforesaid double frequency external antenna.
The utility model takes two chokes sleeve pipes to realize double frequency (900/1800MHz) chokes, reduces the influence of coaxial cable exocuticle electric current to fixed station by chokes, realizes balanced feeding and two-frequency operation, improves antenna and fixed station service behaviour.Described metal tube broadening the antenna high frequency bandwidth, improve high frequency performance.Described insulating bushing works to prevent chokes sleeve pipe and metal tube contact short circuit.Described helical spring is more effective to high frequency choke.The fixed station that comprises described double frequency external antenna has good electric property and mechanical performance, simple in structure, be easy to install, cost is low, is fit to industrial production in enormous quantities.
Description of drawings
Fig. 1 is the cutaway view that the utility model provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figure 1, the double frequency external antenna that the utility model provides comprises outer cover 1, is located at coaxial cable 2 and the cable connector assembly 3 that links to each other with described outer cover in the described outer cover, the described coaxial cable 2 outer sheathed chokes sleeve pipes that are electrically connected with its screen (not shown), described chokes sleeve pipe is made of at least two length chokes sleeve pipe different with diameter, the preferred copper pipe of described chokes sleeve pipe, an end and the cable connector assembly 3 of described coaxial cable join.The 2 outer sheathed first chokes sleeve pipe 4 and the second chokes sleeve pipes 5 of coaxial cable described in the present embodiment, the diameter of the described first chokes sleeve pipe 4 is littler than the diameter of the second chokes sleeve pipe 5, the diameter of the first chokes sleeve pipe 4 is 2～5mm, the diameter of the second chokes sleeve pipe 5 is 4～9mm, and these two chokes sleeve pipes are all coaxial with coaxial cable 2.One end of one end of the described first chokes sleeve pipe 4 and the second chokes sleeve pipe 5 forms with the metal screen layer welding of coaxial cable 2 by becket 6 and is electrically connected, establish the lining 7 of the fastening effect of insulation between the end of the described second chokes sleeve pipe 5 and the first chokes sleeve pipe 4, also established the lining 8 of the fastening effect of insulation between the end of the described first chokes sleeve pipe 4 and the coaxial cable 2.The operating frequency of existing fixed station is generally 900/1800MHz, the length of the described first chokes sleeve pipe 4 is the quarter-wave of 900MHz, correspondingly, the length of the described second chokes sleeve pipe 5 is the quarter-wave of 1800MHz, and the length of the first chokes sleeve pipe 4 described in the present embodiment is about the twice of the second chokes sleeve pipe, 5 length.The utility model is screwed on the fixed station by the coaxial fitting 9 of being located at described cable connector assembly 3 ends, and the impedance of fixed station is generally 50 ohm, and by debugging, the impedance that makes antenna is and the impedance matching of fixed station that the transmitting-receiving performance of fixed station is better.The chokes sleeve pipe is used for doing with coaxial cable the occasion of feeder line, and its effect is to keep the heart yearn of coaxial cable and the current balance type of screen.The length of chokes sleeve pipe is got 1/4 wavelength, the screen of it and coaxial cable constitutes the transmission line of one 1/4 wavelength, terminal open circuit, because this transmission line has very big impedance to the electric current of this frequency range, so just stoped high-frequency current mobile, kept the current balance type of coaxial cable inside along the screen outer surface of coaxial cable.The utility model takes two chokes sleeve pipes to realize the double frequency chokes, reduces the influence of coaxial cable exocuticle electric current to fixed station by chokes, realizes balanced feeding and two-frequency operation, improves antenna performance.
Be the broadening high frequency bandwidth, improve the antenna high frequency performance, described chokes sleeve pipe front end is established the metal tube 10 that is electrically connected with the heart yearn of coaxial cable 2, establish the metal closures 11 that the heart yearn with described coaxial cable 2 is weldingly connected in described metal tube 10 lower ends, described metal closures 11 is concordant with the end of described metal tube 10, and the diameter of described metal tube 10 is identical with the first chokes sleeve pipe 4.For prevent chokes sleeve pipe and metal tube 10 and or metal closures 11 contact short circuits, establish insulating bushing 12 between described chokes sleeve pipe and the metal tube 10.
For more effective to high frequency choke, the heart yearn end of described coaxial cable 2 is provided with helical spring 13.The length of helical spring described in the present embodiment 13 is 13～15mm, and the number of turn is 10～15 circles.
The utility model is applicable to the communication between the 900/1800MHz fixed station, voltage standing wave ratio in the frequency range≤2.Described double frequency external antenna has been realized balanced feeding and two-frequency operation, has good electric property and mechanical performance, simple in structure, be easy to install, cost is low, is fit to industrial production in enormous quantities.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. double frequency external antenna, comprise: outer cover, be located at coaxial cable and the cable connector assembly that links to each other with described outer cover in the described outer cover, it is characterized in that, the outer sheathed chokes sleeve pipe that is electrically connected with its screen of described coaxial cable, described chokes sleeve pipe is made of at least two length chokes sleeve pipe different with diameter.
2. double frequency external antenna as claimed in claim 1, it is characterized in that, described chokes sleeve pipe has the first chokes sleeve pipe and the second chokes sleeve pipe, the length of the described first chokes sleeve pipe is longer than the length of the described second chokes sleeve pipe, and the described first chokes sleeve pipe and the second chokes sleeve pipe are all coaxial with coaxial cable.
3. double frequency external antenna as claimed in claim 2 is characterized in that, the length of the described first chokes sleeve pipe is the quarter-wave of 900MHz, and the length of the described second chokes sleeve pipe is the quarter-wave of 1800MHz; The diameter of the described first chokes sleeve pipe is littler than the diameter of the second chokes sleeve pipe.
4. as claim 2 or 3 described double frequency external antennas, it is characterized in that an end of an end of the described first chokes sleeve pipe and the second chokes sleeve pipe forms with the metal screen layer welding of described coaxial cable by becket and is electrically connected.
5. as claim 2 or 3 described double frequency external antennas, it is characterized in that, establish the lining of the fastening effect of insulation between the end of the described second chokes sleeve pipe and the first chokes sleeve pipe, also established the lining of the fastening effect of insulation between the end of the described first chokes sleeve pipe and the coaxial cable.
6. double frequency external antenna as claimed in claim 1 is characterized in that, described chokes sleeve pipe front end is established the metal tube that is electrically connected with the heart yearn of described coaxial cable.
7. double frequency external antenna as claimed in claim 6 is characterized in that, the metal closures that the heart yearn with described coaxial cable is weldingly connected is established in described metal tube lower end, and the diameter of described metal tube is identical with the first chokes sleeve pipe.
8. as claim 6 or 7 described double frequency external antennas, it is characterized in that, establish insulating bushing between described chokes sleeve pipe and the described metal tube.
9. double frequency external antenna as claimed in claim 1 is characterized in that, the heart yearn end of described coaxial cable is provided with helical spring.
10. a fixed station is characterized in that, described fixed station comprises the described double frequency external antenna of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202604941U CN201540950U (en) | 2009-11-23 | 2009-11-23 | Double-frequency external antenna and fixed station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202604941U CN201540950U (en) | 2009-11-23 | 2009-11-23 | Double-frequency external antenna and fixed station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201540950U true CN201540950U (en) | 2010-08-04 |
Family
ID=42592406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202604941U Expired - Fee Related CN201540950U (en) | 2009-11-23 | 2009-11-23 | Double-frequency external antenna and fixed station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201540950U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953235A (en) * | 2015-06-11 | 2015-09-30 | 苏州爱吉亚电子科技有限公司 | Multi-band external antenna |
| CN108565540A (en) * | 2018-05-30 | 2018-09-21 | 深圳市道通智能航空技术有限公司 | Antenna and unmanned vehicle |
-
2009
- 2009-11-23 CN CN2009202604941U patent/CN201540950U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953235A (en) * | 2015-06-11 | 2015-09-30 | 苏州爱吉亚电子科技有限公司 | Multi-band external antenna |
| CN108565540A (en) * | 2018-05-30 | 2018-09-21 | 深圳市道通智能航空技术有限公司 | Antenna and unmanned vehicle |
| WO2019228336A1 (en) * | 2018-05-30 | 2019-12-05 | 深圳市道通智能航空技术有限公司 | Antenna and unmanned aerial vehicle |
| CN108565540B (en) * | 2018-05-30 | 2024-04-09 | 深圳市道通智能航空技术股份有限公司 | Antenna and unmanned aerial vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: MOBI Technologies (Xi'an) Co., Ltd. Assignor: Mobile Antenna Technologies (Shenzhen) Co., Ltd. Contract record no.: 2012440020135 Denomination of utility model: Double-frequency external antenna and fixed station Granted publication date: 20100804 License type: Exclusive License Record date: 20120601 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100804 Termination date: 20131123 |