CN102709698A - Novel high-isolation dual-frequency dual-polarization lobe equal-width antenna - Google Patents
Novel high-isolation dual-frequency dual-polarization lobe equal-width antenna Download PDFInfo
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- CN102709698A CN102709698A CN201210173990XA CN201210173990A CN102709698A CN 102709698 A CN102709698 A CN 102709698A CN 201210173990X A CN201210173990X A CN 201210173990XA CN 201210173990 A CN201210173990 A CN 201210173990A CN 102709698 A CN102709698 A CN 102709698A
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Abstract
The invention discloses a novel high-isolation dual-frequency dual-polarization lobe equal-width antenna. The antenna comprises a short-circuit piston and a corrugated horn which is connected with the short-circuit piston, wherein the corrugated horn is provided with a high-frequency feed port and a low-frequency feed port which are mutually and vertically placed; the high-frequency feed port is formed by a coaxial cable and a first metal pendant, and the first metal pendant is connected with an inner conductor of the coaxial cable; the low-frequency feed port is formed by the coaxial cable and a second metal pendant, and the second metal pendant is connected with the inner conductor of the coaxial cable; and the first metal pendant and the second metal pendant are both positioned in the corrugated horn. According to the novel high-isolation dual-frequency dual-polarization lobe equal-width antenna disclosed by the invention, by adopting an orthogonal field feed technology, thus the antenna can work under a dual-frequency dual-polarization condition, the isolation is higher than 40 dB in a low-frequency section and is higher than 30 dB in a high-frequency section, the standing-wave ratio is less than 1.5, the gain is about 15 dBi, and the antenna efficiency is larger than 65%.
Description
Technical field
The present invention relates to Wide antennas such as a kind of high-isolation dual-band and dual-polarization lobe, specifically a kind of novel high-isolation dual-band dual-polarized antenna lobe is wide, belongs to the horn antenna field.
Background technology
Following satellite communication system not only requires the antenna high-gain, has good disguise and mobility; Also need antenna to satisfy high capacity communication, transceiving integrated requirement; To handle the signal of two separates frequency bands that receive synchronously and launch; This requires antenna can realize broadband, double frequency, dual polarization work simultaneously, promptly so-called dual-band dual-polarized antenna.
For realizing dual-band dual-polarized antenna, can adopt microstrip antenna etc., but such antenna gain was lower in the past.For improving gain, adopt heavy caliber figuration reflector antenna usually, like parabolic antenna, jam gram human relations antenna and horn antenna etc.That the figuration reflector antenna has is simple in structure, cost is low, loss is little, be prone to realize plurality of advantages such as double frequency and dual polarization, in satellite communication system, uses very extensively.But when requiring figuration reflector antenna lobe under two kinds of polarization situation wide, realize high-isolation, double frequency, dual polarization characteristic, have certain degree of difficulty.
Summary of the invention
Technical problem to be solved by this invention is when realizing that lobe is wide, to realize high-isolation, dual-band and dual-polarization characteristic, proposes Wide antennas such as a kind of novel high-isolation dual-band and dual-polarization lobe.
The present invention adopts following technical scheme for solving the problems of the technologies described above:
Wide antennas such as a kind of novel high-isolation dual-band and dual-polarization lobe, the wrinkle loudspeaker that comprise short-circuit plunger and link to each other with short-circuit plunger, wrinkle loudspeaker are provided with vertical each other high frequency feed port and low frequency feed port of placing; Wherein, said high frequency feed port is made up of first coaxial cable and the first metal weight, and wherein the first metal weight links to each other with the inner wire of first coaxial cable; Said low frequency feed port is made up of second coaxial cable and the second metal weight, and wherein the second metal weight links to each other with the inner wire of second coaxial cable; The said first metal weight, the second metal weight all are arranged in the wrinkle loudspeaker.
Further, Wide antennas such as a kind of novel high-isolation dual-band and dual-polarization lobe of the present invention, the distance of said high frequency feed port and short-circuit plunger its right end face is 1/4th of this port excitation electromagnetic wavelength; The distance of said low frequency feed port and short-circuit plunger its right end face is 1/4th of this port excitation electromagnetic wavelength.
Further, Wide antennas such as a kind of novel high-isolation dual-band and dual-polarization lobe of the present invention, said short-circuit plunger is processed by metal material, and thickness is 2mm ~ 5mm.
Further; Wide antennas such as a kind of novel high-isolation dual-band and dual-polarization lobe of the present invention; The said first metal weight, the second metal weight are cylindrical, the size of the said first metal weight, the second metal weight and this metal weight place feed port the radiation impedance that will realize be complementary.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
The present invention adopts the crossed field feeding technique, makes antenna can be operated in dual-band and dual-polarization, and isolation is higher than 40dB in low-frequency range, and high band is higher than 30dB, and standing-wave ratio is less than 1.5, and gain is about 15dBi, and antenna efficiency is greater than 65%.
Description of drawings
Fig. 1 is the wide horn antenna structural upright of a dual-band and dual-polarization lobe sketch map.
Fig. 2 is a feed port structural upright sketch map, and wherein (a) is the high frequency feed port, (b) is the low frequency feed port.
Fig. 3 is that the high frequency feed port is that P1 port, low frequency feed port are the S parametric plot under the P2 port case.
Fig. 4 is that the high frequency feed port is that P1 port, low frequency feed port are voltage standing wave ratio (VSWR) parametric plot under the P2 port case.
Fig. 5 is the antenna curve chart that radiation amplitude changes with radiation θ angle on two frequencies.
Label is explained among the figure: 1-short-circuit plunger, 2-high frequency feed port, 3-low frequency feed port, 4-wrinkle loudspeaker, 5-coaxial cable, the 6-first metal weight, the 7-second metal weight.
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is done further detailed description:
As shown in Figure 1, Wide antennas such as high-isolation dual-band and dual-polarization lobe of the present invention comprise short-circuit plunger 1 and the wrinkle loudspeaker 4 that link to each other with short-circuit plunger 1.
Wherein, wrinkle loudspeaker 4 are provided with two antenna current feed ports, are respectively high frequency feed port 2 and low frequency feed port 3.Adopt the wrinkle loudspeaker can improve isolation and improve two kinds of lobe widths under the polarization.
High frequency feed port 2 is made up of coaxial cable 5 and cylindrical metal weight 6.Metal weight 6 links to each other with inner wire one end of coaxial cable 5.
Low frequency feed port 3 is made up of the metal weight 7 of coaxial cable 5 and another different size.Metal weight 7 links to each other with inner wire one end of coaxial cable 5.
Can change the radiation impedance of feed port through the size of regulating two feed port metal weights, and then improve the efficient of antenna, reduce voltage standing wave ratio.For example for being operated in the 32GHz wave band, the cylindrical radius of metal weight is 2mm, and thickness is 0.6mm; And for the 23GHz wave band, the cylindrical radius of metal weight is 1.2mm, and thickness is that 1.3mm can realize lower voltage standing wave ratio, improves the efficient of antenna.
The distance of feed port and short-circuit plunger its right end face is 1/4th electromagnetic wavelengths in this port excitation.Just formed a resonant cavity between short-circuit plunger and feed port this moment, can change the radiation wavelength of antenna through the distance between adjusting short-circuit plunger and feed port.
Feed port 2 and feed port 3 mutual vertical placements, and metal weight 6 and 7 placed wrinkle loudspeaker 4 respectively make 2 orthogonal electromagnetic radiation fields of excitation in antenna.And the field of being encouraged is mutually orthogonal, can improve the isolation of 2 operating frequencies greatly.
With reference to Fig. 1, short-circuit plunger 1 can be processed with metal materials such as copper, aluminium, and thickness is at 2mm ~ 5mm.Wrinkle loudspeaker 4 can be processed through the fine finishining of Digit Control Machine Tool, and material can be used metal materials such as copper, aluminium.
With reference to Fig. 2, the cylindrical metal weight can be processed with metal materials such as copper, aluminium.Feed port 2 and 3 can be processed through coaxial cable and the welding of cylindrical metal weight.
With reference to Fig. 1, at first certain location boring on wrinkle loudspeaker 4 is welded on feed port 2,3 on the wrinkle loudspeaker 4 then.
Fig. 3 has provided high frequency feed port 2 and has been the S parameters simulation curve chart under the P2 port case for P1 port, low frequency feed port 3, from figure, can see that at low-frequency range (23.8GHz) isolation is higher than 40dB; At high band (31.65GHz), isolation is higher than 30dB.
It is the simulation curve figure of voltage standing wave ratio (VSWR) parameter under the P2 port case for P1 port, low frequency feed port 3 that Fig. 4 has provided high frequency feed port 2, from figure, can see that in high band and low-frequency range VSWR is all less than 1.5.
Fig. 5 has provided the radiation amplitude simulation curve figure of antenna on two frequencies.From figure, can see at the lobe half-breadth angle of high band and low-frequency range and differing less than 6 degree.
Claims (4)
1. Wide antennas such as novel high-isolation dual-band and dual-polarization lobe is characterized in that: the wrinkle loudspeaker that comprise short-circuit plunger and link to each other with short-circuit plunger, wrinkle loudspeaker are provided with vertical each other high frequency feed port and low frequency feed port of placing; Wherein, said high frequency feed port is made up of first coaxial cable and the first metal weight, and wherein the first metal weight links to each other with the inner wire of first coaxial cable; Said low frequency feed port is made up of second coaxial cable and the second metal weight, and wherein the second metal weight links to each other with the inner wire of second coaxial cable; The said first metal weight, the second metal weight all are arranged in the wrinkle loudspeaker.
2. Wide antennas such as a kind of novel high-isolation dual-band and dual-polarization lobe according to claim 1 is characterized in that: the distance of said high frequency feed port and short-circuit plunger its right end face is 1/4th of this port excitation electromagnetic wavelength; The distance of said low frequency feed port and short-circuit plunger its right end face is 1/4th of this port excitation electromagnetic wavelength.
3. Wide antennas such as a kind of novel high-isolation dual-band and dual-polarization lobe according to claim 1, it is characterized in that: said short-circuit plunger is processed by metal material, and thickness is 2mm ~ 5mm.
4. Wide antennas such as a kind of novel high-isolation dual-band and dual-polarization lobe according to claim 1; It is characterized in that: the said first metal weight, the second metal weight are cylindrical, the size of the said first metal weight, the second metal weight and this metal weight place feed port the radiation impedance that will realize be complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210173990XA CN102709698A (en) | 2012-05-31 | 2012-05-31 | Novel high-isolation dual-frequency dual-polarization lobe equal-width antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210173990XA CN102709698A (en) | 2012-05-31 | 2012-05-31 | Novel high-isolation dual-frequency dual-polarization lobe equal-width antenna |
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| CN102709698A true CN102709698A (en) | 2012-10-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108736163A (en) * | 2018-04-25 | 2018-11-02 | 东南大学 | A kind of Ku frequency ranges balanced feeding dual-band and dual-polarization medium electromagnetic horn |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4680558A (en) * | 1983-12-27 | 1987-07-14 | Telecomunicacoes Brasileiras S/A - Telebras | Corrugated transition device for use between a continuous and a corrugated circular waveguide with signal in two different frequency bands |
| CN101604782A (en) * | 2009-05-12 | 2009-12-16 | 成都赛纳赛德科技有限公司 | The high band broadband is coaxial-the waveguide adapter |
| CN202651359U (en) * | 2012-05-31 | 2013-01-02 | 南京信息工程大学 | Novel high-isolation dual-frequency dual-polarization lobe equal-width antenna |
-
2012
- 2012-05-31 CN CN201210173990XA patent/CN102709698A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4680558A (en) * | 1983-12-27 | 1987-07-14 | Telecomunicacoes Brasileiras S/A - Telebras | Corrugated transition device for use between a continuous and a corrugated circular waveguide with signal in two different frequency bands |
| CN101604782A (en) * | 2009-05-12 | 2009-12-16 | 成都赛纳赛德科技有限公司 | The high band broadband is coaxial-the waveguide adapter |
| CN202651359U (en) * | 2012-05-31 | 2013-01-02 | 南京信息工程大学 | Novel high-isolation dual-frequency dual-polarization lobe equal-width antenna |
Non-Patent Citations (1)
| Title |
|---|
| 滕静华: "双频双极化龙伯透镜馈源天线技术研究", 《CNKI优秀硕士学位论文全文库》, 15 December 2011 (2011-12-15) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108736163A (en) * | 2018-04-25 | 2018-11-02 | 东南大学 | A kind of Ku frequency ranges balanced feeding dual-band and dual-polarization medium electromagnetic horn |
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Application publication date: 20121003 |