CN102013577A - Planar feed network for displaying circular polarized antennas - Google Patents
Planar feed network for displaying circular polarized antennas Download PDFInfo
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- CN102013577A CN102013577A CN2010105096426A CN201010509642A CN102013577A CN 102013577 A CN102013577 A CN 102013577A CN 2010105096426 A CN2010105096426 A CN 2010105096426A CN 201010509642 A CN201010509642 A CN 201010509642A CN 102013577 A CN102013577 A CN 102013577A
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Abstract
The invention discloses a planar feed network for displaying circular polarized antennas. The input end of the planar feed network is successively connected with a 1/4 wavelength impedance converter and a bridge coupler through microstrip lines, and the four ports of the bridge coupler are respectively connected with an antenna unit. The planar feed network has the advantages of capability of generating a left hand polarization or a right hand polarization circular polarized signal by connecting dephasing lines on the ports, simple structure, low production cost and capability of being widely used in various circular antenna arrays.
Description
Technical field
The present invention relates to a kind of planar-fed network, especially a kind of feeding network that is used for the circular polarized antenna array.
Background technology
Transmit advantage based on the circular polarization mode, circular polarized antenna has been widely used in phase array, as various application antennas, antenna for mobile phone, satellite antenna etc.Under many circumstances, circular polarized antenna is made up of one group of antenna, forms antenna array, and radio-frequency input signals switches to each antenna element to signal through feeding network, thereby realizes circular polarity format.The present invention realizes this signal switch operating with a simple plane feeding network exactly.
Summary of the invention
The purpose of this invention is to provide a kind of planar-fed network, can be used for being used for the feed of circular polarized antenna array.
For achieving the above object, by the following technical solutions:
A kind of planar-fed network that is used for circular polarized antenna display, input adopt microstrip line to connect 1/4 wavelength impedance transducer and electric bridge coupler successively, are respectively applied for through four ports of described electric bridge coupler to connect an antenna element.
Two ports at described electric bridge coupler are connected with phase-shift line, can produce the circularly polarized signal of left hand polarization.
Three ports at described electric bridge coupler are connected with phase-shift line, can produce the circularly polarized signal of right hand polarization.
Planar-fed network provided by the invention, simple in structure, production cost is low, can be widely used in various circular polarized antenna arrays.
Description of drawings
According to embodiment and accompanying drawing the present invention is described in further detail below.
Fig. 1 is the structural representation of the plane polarization feeding network of the circularly polarized signal of generation right hand polarization;
Fig. 2 is the structural representation of the plane polarization feeding network of the circularly polarized signal of generation left hand polarization.
Among the figure:
10, signal input port; 11,12,13,14, delivery outlet port; 100,1/4 wavelength impedance transformer; 101～104, transmission line; 105～107, phase-shift line;
20, signal input port; 21,22,23,24, delivery outlet port; 200,1/4 wavelength impedance transformer; 201～204, transmission line; 205～206, phase-shift line.
Embodiment
Shown in Fig. 1 to 2, provided the theory structure schematic diagram of planar-fed network of the present invention, the circular polarization feeding network is sent to four antenna ports with radiofrequency signal, and this system can send (or reception) right polarization (or left side polarization) signal.
Fig. 1 is the structural representation of the plane polarization feeding network of the circularly polarized signal of generation right hand polarization.
The electric bridge coupler of being made up of 101,102,103 and 104 4 transmission lines 100, one of one 1/4 wavelength impedance transformers and three phase-shift lines 105,106 and 107 are formed, and whole feeding network can keep 4 output signal constant amplitudes and suitable phase shift is arranged.Four delivery outlet ports are respectively applied for and connect an antenna element.Feeding network is made up of 5 ports: a signal input port one 0 and four delivery outlet ports are respectively 11,12,13 and 14.This feeding network is made up of microstrip line (or strip line) circuit, when a radio-frequency signal source is received input port port one 0, delivery outlet port one 1 can produce a signal of spending with source signal phase shift 90, delivery outlet port one 2 can produce a signal of spending with source signal phase shift 180, signal phase shift 270 degree that delivery outlet port one 3 produces, signal and source signal homophase that delivery outlet port one 4 produces.
Similarly, Fig. 2 is the structural representation of the plane polarization feeding network of the circularly polarized signal of generation left hand polarization.
Feeding network is made up of 200, one electric bridge coupler and phase-shift lines of being made up of 201,202,203 and 204 4 transmission lines 205 and 206 of one 1/4 wavelength impedance transformer, and feeding network can keep 4 output signal constant amplitudes and suitable phase shift is arranged.When a radio-frequency signal source is received signal input port 20, delivery outlet port 21 can produce a signal of spending with source signal phase shift 90, delivery outlet port 22 can produce a signal with the source signal homophase, signal bias 270 degree that delivery outlet port 23 produces, the signal that delivery outlet port 24 produces and source signal skew 180 degree.
Claims (3)
1. planar-fed network that is used for circular polarized antenna display, it is characterized in that: input adopts microstrip line to connect 1/4 wavelength impedance transducer and electric bridge coupler successively, is respectively applied for through four ports of described electric bridge coupler to connect an antenna element.
2. the planar-fed network that is used for circular polarized antenna display according to claim 1 is characterized in that, is connected with phase-shift line at two ports of described electric bridge coupler, can produce the circularly polarized signal of left hand polarization.
3. the planar-fed network that is used for circular polarized antenna display according to claim 1 is characterized in that, is connected with phase-shift line at three ports of described electric bridge coupler, can produce the circularly polarized signal of right hand polarization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105096426A CN102013577A (en) | 2010-10-18 | 2010-10-18 | Planar feed network for displaying circular polarized antennas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105096426A CN102013577A (en) | 2010-10-18 | 2010-10-18 | Planar feed network for displaying circular polarized antennas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102013577A true CN102013577A (en) | 2011-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105096426A Pending CN102013577A (en) | 2010-10-18 | 2010-10-18 | Planar feed network for displaying circular polarized antennas |
Country Status (1)
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| CN (1) | CN102013577A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101719599A (en) * | 2009-12-31 | 2010-06-02 | 天津工程师范学院 | Array antenna of circularly polarized dielectric resonator |
| CN201877577U (en) * | 2010-10-18 | 2011-06-22 | 江苏贝孚德通讯科技股份有限公司 | Plane feed network for circularly-polarized antenna arrays |
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2010
- 2010-10-18 CN CN2010105096426A patent/CN102013577A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101719599A (en) * | 2009-12-31 | 2010-06-02 | 天津工程师范学院 | Array antenna of circularly polarized dielectric resonator |
| CN201877577U (en) * | 2010-10-18 | 2011-06-22 | 江苏贝孚德通讯科技股份有限公司 | Plane feed network for circularly-polarized antenna arrays |
Non-Patent Citations (1)
| Title |
|---|
| SHING-LUNG STEVEN YANG ETC: "Study on Sequential Feeding Networks for Subarrays of Circularly Polarized Elliptical Dielectric Resonator Antenna", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
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Application publication date: 20110413 |