CN102694239B - Double-frequency omnidirectional antenna - Google Patents
Double-frequency omnidirectional antenna Download PDFInfo
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- CN102694239B CN102694239B CN201210173284.5A CN201210173284A CN102694239B CN 102694239 B CN102694239 B CN 102694239B CN 201210173284 A CN201210173284 A CN 201210173284A CN 102694239 B CN102694239 B CN 102694239B
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- impedance transformer
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- radiating doublet
- electric capacity
- omnidirectional antenna
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Abstract
The invention relates to a double-frequency omnidirectional antenna which comprises two radiation oscillators with a phase shifter, an impedance transformer and a cable connector. The radiation oscillator is connected with the cable connector by an LC (inductance and capacitance) matching circuit and the impedance transformer. The double-frequency omnidirectional antenna consists of two radiation oscillators, the phase shifter, the LC matching circuit, the coaxial impedance transformer and the cable connector, the out-of-roundness in the operating frequency range of the antenna is low by means of adjusting the lengths of the two radiation oscillator and the length of the phase shifter, and the double-frequency omnidirectional antenna has the advantages of simple structure, low cost, small diameter, light weight, convenience in installation, high interference resistance and gain, fine consistency, wide application range and the like.
Description
Technical field
The present invention relates to a kind of antenna, is a kind of double-frequency omnidirectional antenna specifically.
Background technology
At present on the navigation mark in ship automatic identification system (AIS) communication system, omnidirectional antenna used is generally to form with two pairs of antennas that are operated in respectively 162MHz and 433MHz, or with one pair of omnidirectional antenna with parasitic oscillator.The shortcoming of this way is that the installation volume of antenna increases, required power synthesizer, and loss is large, gains low, between two pairs of antennas, easily influences each other, and has reduced the efficiency of antenna, and cost is high, causes the wasting of resources.
Summary of the invention
The present invention has overcome in prior art not enough, and provide a kind of simple in structure, volume is little, lightweight, easy to make, cost is low, loss is low, it is high to gain, and can realize the high-performance double-frequency omnidirectional antenna of long-haul reliable transmission.
The technical solution used in the present invention is: a kind of double-frequency omnidirectional antenna, comprise radiating doublet, impedance transformer and cable connector with phase shifter, it is characterized in that: described radiating doublet connects after LC match circuit, be connected with impedance transformer, impedance transformer is through the external pipeline of cable connector again.
Described radiating doublet comprises radiating doublet and lower radiating doublet, and phase shifter is connected between radiating doublet and lower radiating doublet and is a linear structure.
Described LC match circuit comprises brass adapter sleeve, nylon rod, enameled wire loop and two electric capacity, radiating doublet successively through brass adapter sleeve, nylon rod, impedance transformer support and connection on cable connector, on nylon rod, be wound with the enameled wire loop that connects brass adapter sleeve, on enameled wire loop, any two places connect respectively the high and low impedance part of impedance transformer through electric capacity.
Described impedance transformer comprises copper rod and copper pipe, and copper rod is coaxially arranged in copper pipe, and on enameled wire loop, place's one electric capacity connects impedance transformer copper rod, and on enameled wire loop, another place connects impedance transformer copper pipe through another electric capacity.
Described electric capacity is NP0 electric capacity.
Upper radiating doublet of the present invention connects one end of phase shifter, the other end of phase shifter connects lower radiating doublet, make antenna when low-frequency range is worked, be equivalent to a monopole antenna, when high band operation, be equivalent to two sections of half-wave dipoles, the communication network of two different frequencies can be used an antenna and the advantages such as website are installed.
The present invention adopts two radiating doublets and a phase shifter, a LC match circuit, a coaxial impedance converter, a cable connector composition double-frequency omnidirectional antenna, by regulating the length of two radiating doublets and phase shifter, double-frequency omnidirectional antenna is at 158-165MHz, under 428-438MHz frequency range, use, its length is less than 1 meter, diameter is less than 13 ㎜, be less than ± 0.5dBi of deviation in roundness, low-frequency range (158-165MHz) E ground roll beam width is 80 degree, gain is more than or equal to 2.0dBi, high band (428-438MHz) E ground roll beam width is 40 degree, gain is more than or equal to 4.5dBi, in antenna working frequency range, deviation in roundness is little, have simple in structure, cost is low, antenna diameter is little, lightweight, interference resistance easy for installation is strong, gain higher, high conformity, the advantage such as applied widely.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: upper radiating doublet 1, phase shifter 2, lower radiating doublet 3, brass adapter sleeve 4, nylon rod 5, enameled wire loop 6, the first electric capacity 7, the second electric capacity 8, copper pipe 9, copper rod 10, cable connector 11.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Shown in Fig. 1, a kind of double-frequency omnidirectional antenna comprises radiating doublet 1, phase shifter 2, lower radiating doublet 3, brass adapter sleeve 4, nylon rod 5, enameled wire loop 6, the first electric capacity 7, the second electric capacity 8, copper pipe 9, copper rod 10 and cable connector 11.Phase shifter 2 is connected between radiating doublet 1 and lower radiating doublet 3 and is a linear structure, lower radiating doublet 3 connects LC match circuit, LC match circuit comprises brass adapter sleeve 4, nylon rod 5, enameled wire loop 6 and two electric capacity 7, 8, lower radiating doublet 3 lower end support and connection are on brass adapter sleeve 4, 4 support and connection of brass adapter sleeve are on nylon rod 5, on nylon rod 5, be wound with the enameled wire loop 6 that connects brass adapter sleeve 4, impedance transformer comprises copper rod 10 and copper pipe 9, copper rod 10 is coaxially arranged in copper pipe 9, on enameled wire loop 6, any two places are respectively through first, the second electric capacity 7, 8 connect copper pipe 9 and the copper rod 10 of impedance transformer, copper pipe 9 and copper rod 10 are through the external pipeline of cable connector 11, first and second electric capacity 7,8 is NP0 electric capacity.
Claims (4)
1. a double-frequency omnidirectional antenna, comprise the radiating doublet with phase shifter, impedance transformer and cable connector, it is characterized in that: described radiating doublet is successively through LC match circuit, impedance transformer stube cable connector, described LC match circuit comprises brass adapter sleeve, nylon rod, enameled wire loop and two electric capacity, radiating doublet is successively through brass adapter sleeve, nylon rod, impedance transformer support and connection are on cable connector, on nylon rod, be wound with the enameled wire loop that connects brass adapter sleeve, on enameled wire loop, any two places connect respectively the height of impedance transformer through electric capacity, Low ESR part.
2. a kind of double-frequency omnidirectional antenna according to claim 1, is characterized in that: described radiating doublet comprises radiating doublet and lower radiating doublet, and phase shifter is connected between radiating doublet and lower radiating doublet and is a linear structure.
3. a kind of double-frequency omnidirectional antenna according to claim 1, it is characterized in that: described impedance transformer comprises copper rod and copper pipe, copper rod is coaxially arranged in copper pipe, on enameled wire loop, place's one electric capacity connects impedance transformer copper rod, and on enameled wire loop, another place connects impedance transformer copper pipe through another electric capacity.
4. a kind of double-frequency omnidirectional antenna according to claim 1, is characterized in that: described electric capacity is NP0 electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210173284.5A CN102694239B (en) | 2012-05-30 | 2012-05-30 | Double-frequency omnidirectional antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210173284.5A CN102694239B (en) | 2012-05-30 | 2012-05-30 | Double-frequency omnidirectional antenna |
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| Publication Number | Publication Date |
|---|---|
| CN102694239A CN102694239A (en) | 2012-09-26 |
| CN102694239B true CN102694239B (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210173284.5A Active CN102694239B (en) | 2012-05-30 | 2012-05-30 | Double-frequency omnidirectional antenna |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015090353A1 (en) * | 2013-12-16 | 2015-06-25 | Huawei Technologies Co., Ltd. | Methods and devices for adjusting beam width in a wireless communication system |
| CN106207395A (en) * | 2016-08-28 | 2016-12-07 | 福建省泉州华鸿通讯有限公司 | A kind of Vehicle mounted station multiband, high-gain aerial |
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| US4958164A (en) * | 1986-04-09 | 1990-09-18 | Shakespeare Company | Low profile, broad band monopole antenna |
| CN1129362A (en) * | 1994-09-06 | 1996-08-21 | 索尼公司 | Antenna |
| CN1190495A (en) * | 1995-05-19 | 1998-08-12 | 莫特科公司 | Antenna device |
| WO2002025771A1 (en) * | 2000-09-19 | 2002-03-28 | Lockheed Martin Corporation | Compact multi-band direction-finding antenna system |
| CN101682116A (en) * | 2007-04-03 | 2010-03-24 | Tdk股份有限公司 | Dipole antenna with improved performance in the low frequency range |
| CN202121060U (en) * | 2011-07-26 | 2012-01-18 | 广东盛路通信科技股份有限公司 | Miniaturized multiband omnidirectional antenna for mobile fixed station |
| CN202121059U (en) * | 2011-07-26 | 2012-01-18 | 广东盛路通信科技股份有限公司 | Linear array omnidirectional antenna |
| CN202601836U (en) * | 2012-05-30 | 2012-12-12 | 泰兴市迅达通讯器材有限公司 | Double-frequency omnidirectional antenna |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL110008A (en) * | 1994-06-13 | 1998-04-05 | Galtronics Ltd | Electrical antenna assembly and electrical device including same |
| US5812093A (en) * | 1995-09-29 | 1998-09-22 | Motorola, Inc. | Antenna assembly for a wireless-communication device |
| GB9612826D0 (en) * | 1996-06-19 | 1996-08-21 | Ford Motor Co | Improved vehicular radio antennas |
| CN2779630Y (en) * | 2004-12-09 | 2006-05-10 | 陈晖� | Lamp pole type double wide frequency omni-directional antenna |
| CN201060940Y (en) * | 2007-06-05 | 2008-05-14 | 王剑 | VHF vehicle-mounted wideband whip-shaped antenna |
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2012
- 2012-05-30 CN CN201210173284.5A patent/CN102694239B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4958164A (en) * | 1986-04-09 | 1990-09-18 | Shakespeare Company | Low profile, broad band monopole antenna |
| CN1129362A (en) * | 1994-09-06 | 1996-08-21 | 索尼公司 | Antenna |
| CN1190495A (en) * | 1995-05-19 | 1998-08-12 | 莫特科公司 | Antenna device |
| WO2002025771A1 (en) * | 2000-09-19 | 2002-03-28 | Lockheed Martin Corporation | Compact multi-band direction-finding antenna system |
| CN101682116A (en) * | 2007-04-03 | 2010-03-24 | Tdk股份有限公司 | Dipole antenna with improved performance in the low frequency range |
| CN202121060U (en) * | 2011-07-26 | 2012-01-18 | 广东盛路通信科技股份有限公司 | Miniaturized multiband omnidirectional antenna for mobile fixed station |
| CN202121059U (en) * | 2011-07-26 | 2012-01-18 | 广东盛路通信科技股份有限公司 | Linear array omnidirectional antenna |
| CN202601836U (en) * | 2012-05-30 | 2012-12-12 | 泰兴市迅达通讯器材有限公司 | Double-frequency omnidirectional antenna |
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| CN102694239A (en) | 2012-09-26 |
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