CN104953282A - Wide-angle scanning phased array antenna system - Google Patents
Wide-angle scanning phased array antenna system Download PDFInfo
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- CN104953282A CN104953282A CN201510372906.0A CN201510372906A CN104953282A CN 104953282 A CN104953282 A CN 104953282A CN 201510372906 A CN201510372906 A CN 201510372906A CN 104953282 A CN104953282 A CN 104953282A
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Abstract
The invention discloses a wide-angle scanning phased array antenna system. The system comprises an SMP connector for accessing input signals, a one-to-two power division network used for constant-amplitude cophase output of the input signals, a 90-degree phase shifter performing 90-degree phase shift and a back cavity bent crisscross micro-strip patch antenna, wherein the back cavity bent crisscross micro-strip patch antenna comprises a rectangular micro-strip shared plate, four sides of the micro-strip shared plate extend to form patch antenna branches, each patch antenna branch is firstly bent upwards by 90 degrees and then bent by 90 degrees in the direction far away from the micro-strip shared plate, an input end of the one-to-two power division network is connected with the SMP connector, one output end of the one-to-two power division network is connected with the back cavity bent crisscross micro-strip patch antenna, the other output end of the one-to-two power division network is connected with the 90-degree phase shifter, and the 90-degree phase shifter is connected with the back cavity bent crisscross micro-strip patch antenna.
Description
Technical field
The present invention relates to scanning antenna, specifically phase array large-angle scanning antenna system.
Background technology
Phased array antenna is when beam scanning, even if unit no-raster mismatch loss, due to the impact of unit lobe in battle array, antenna gain also can be caused in different scanning angle to there is certain decline, and in battle array, unit lobe is narrower, and gain declines more obvious.Therefore, for the phased array antenna requiring large-angle scanning, all wish unit lobe in the battle array of as far as possible broadening antenna, to meet the index request of antenna gain under high scan angles.Therefore to study and how solve large-angle scanning gain decline problem.
Summary of the invention
The object of the present invention is to provide a kind of phase array large-angle scanning antenna system, the broad beam of antenna can be achieved.
Object of the present invention is achieved through the following technical solutions: phase array large-angle scanning antenna system, comprise the SMP type joint of access input signal, comprise the one-to-two power division network exported by input signal constant amplitude homophase, comprise the 90 ° of phase shifters carrying out 90 degree of phase shifts, also comprise back of the body chamber bending right-angled intersection micro-strip paster antenna, back of the body chamber bending right-angled intersection micro-strip paster antenna comprises micro-band common board of rectangle, four limits of micro-band common board are all extended with paster antenna minor matters, paster antenna minor matters bend 90 degree to the direction away from micro-band common board after first upwards bending 90 degree again, the input of one-to-two power division network is connected with SMP type joint, an output of one-to-two power division network bends right-angled intersection micro-strip paster antenna with back of the body chamber and is connected, another output of one-to-two power division network is connected with 90 ° of phase shifters, 90 ° of phase shifters bend right-angled intersection micro-strip paster antenna with back of the body chamber and are connected.
Also comprise antenna chamber, the lower inwall of antenna chamber is provided with layer dielectric substrate, the upper inwall of antenna chamber is provided with top dielectric substrate, back of the body chamber bending right-angled intersection micro-strip paster antenna is arranged on the one side of top dielectric substrate face to lower floor's dielectric substrate, be connected with top dielectric substrate after the bending of paster antenna minor matters, micro-band common board and top dielectric substrate keep gap.
Described 90 ° of phase shifters are the conducting copper belt of a U-shaped, and one end of 90 ° of phase shifters is connected with an output of one-to-two power division network, and the other end of 90 ° of phase shifters bends right-angled intersection micro-strip paster antenna by wire B with back of the body chamber and is connected.
SMP type joint was also connected with electric capacity feed structure before access signal.
Preferably, an output of one-to-two power division network bends right-angled intersection micro-strip paster antenna by electric capacity feed structure with back of the body chamber and is connected, and the output of 90 ° of phase shifters bends right-angled intersection micro-strip paster antenna by electric capacity feed structure with back of the body chamber and is connected.Micro-strip resistance is provided with between 2 outputs of one-to-two power division network.
During enforcement, its structure specifically adopted is as follows: phase array large-angle scanning antenna system, comprise antenna chamber, the lower inwall of antenna chamber is provided with layer dielectric substrate, the upper inwall of antenna chamber is provided with top dielectric substrate, top dielectric substrate face is provided with back of the body chamber bending right-angled intersection micro-strip paster antenna to the one side of lower floor's dielectric substrate, back of the body chamber bending right-angled intersection micro-strip paster antenna comprises micro-band common board of rectangle, four limits of micro-band common board are all extended with paster antenna minor matters, 4 paster antenna minor matters are connected with top dielectric substrate after all carrying out bending, micro-band common board and top dielectric substrate keep gap, layer dielectric substrate is also provided with feed power division network, and feed power division network comprises 2 outlet lines, and 2 outlet lines are connected respectively by the paster antenna minor matters that wire A and wire B are adjacent with two.
The principle of said structure is: by microband paste is bent, reduce the size of right-angled intersection microband paste, thus achieve the broad beam of antenna, and traditional structure is directly arranged on top dielectric substrate by right-angled intersection microband paste, the present invention is installed on top dielectric substrate after four of right-angled intersection microband paste paster antenna minor matters being bent again, and the right-angled intersection microband paste after bending becomes back of the body chamber bending right-angled intersection micro-strip paster antenna, in order to realize the impedance variation that circular polarization and solution size reduce to bring, therefore, the present invention is also provided with feed power division network.
Preferably, described feed power division network comprises one-to-two power division network and 90 ° of phase shifters, one-to-two power division network comprises 2 feed arms, 2 feed arms are connected on a signal input part simultaneously, wherein, 1 feed arm is directly connected with paster antenna minor matters by wire A, is connected after another 1 feed arm is connected with 90 ° of phase shifters by wire B with paster antenna minor matters.Feed power division network postpones two paster antenna minor matters feed respectively by one-to-two power division network and 90 ° of phase shifters, realize circular polarization, simultaneously, the impedance variation adopting the mode of electric capacity feed to overcome antenna size to reduce to bring, makes antenna all reach good impedance matching in whole working band.
Preferably, described 90 ° of phase shifters are the conducting copper belt of a U-shaped, and one end of 90 ° of phase shifters is connected with the feed arm of one-to-two power division network, and one end of 90 ° of phase shifters is connected with wire B.Through research, the present invention adopts the conducting copper belt of U-shaped as 90 ° of phase shifters, can reach reduced size, and its Phasing is best simultaneously, can make the circular polarization best results of whole antenna element.
Preferably, described signal input part is connected with SMP type joint.
Preferably, overlook on direction, the projection of paster antenna minor matters does not overlap with the projection of micro-band common board.
Preferably, paster antenna minor matters first after top dielectric substrate direction bending 90 degree, bend 90 degree again to the direction away from micro-band common board.
The back of the body chamber bending right-angled intersection micro-strip paster antenna formed after adopting above-mentioned bending mode, can ensure to obtain less size, can also reach wider broad beam.
Signal enters the one-to-two power division network of antenna after being connected with the SMP type joint of antenna element by radio frequency cable, input signal constant amplitude homophase exports by one-to-two power division network, the direct feed antenna of one road input signal, another road input signal feed antenna after 90 ° of phase shifters, thus form two orthogonal electric fields at Antenna aperture, this electric field amplitude is equal, phase 90 °, forms circular polarization electromagnetic wave in space.
The invention has the advantages that: back of the body chamber bending right-angled intersection micro-strip paster antenna size is little, the broad beam of antenna can be realized, the parameter of this structure has: the gain of isolated antenna element is about 6.1dB, and in battle array, the gain of element antenna is about 4.2dB, and the beamwidth of isolated antenna element is about 99 °; In battle array, antenna element beamwidth is about 91 °, and the radiofrequency signal of input can be made to be transformed into the electromagnetic wave of circular polarization toward space radiation, and the beamwidth of radiation wider (reaching 93 °); All 3 are less than at the Circular polarization ratio of beam area internal antenna.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view that the present invention specifically implements structure.
Fig. 2 is schematic top plan view of the present invention.
Fig. 3 is the schematic diagram of back of the body chamber bending right-angled intersection micro-strip paster antenna.
Fig. 4 is design principle block diagram of the present invention.
Reference numeral in figure is expressed as: 1, antenna chamber; 2, top dielectric substrate; 3, layer dielectric substrate; 4, chamber bending right-angled intersection micro-strip paster antenna is carried on the back; 5, wire A; 6, wire B; 7, SMP type joint; 8, one-to-two power division network; 9,90 ° of phase shifters; 41, paster antenna minor matters; 42, micro-band common board.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
embodiment 1:
As shown in Figure 1, Figure 2, Figure 3, Figure 4.
Phase array large-angle scanning antenna system, comprise the SMP type joint of access input signal, comprise the one-to-two power division network exported by input signal constant amplitude homophase, comprise the 90 ° of phase shifters carrying out 90 degree of phase shifts, also comprise back of the body chamber bending right-angled intersection micro-strip paster antenna, back of the body chamber bending right-angled intersection micro-strip paster antenna comprises micro-band common board 42 of rectangle, four limits of micro-band common board 42 are all extended with paster antenna minor matters 41, paster antenna minor matters 41 bend 90 degree to the direction away from micro-band common board 42 after first upwards bending 90 degree again, the input of one-to-two power division network is connected with SMP type joint, an output of one-to-two power division network bends right-angled intersection micro-strip paster antenna with back of the body chamber and is connected, another output of one-to-two power division network is connected with 90 ° of phase shifters, 90 ° of phase shifters bend right-angled intersection micro-strip paster antenna with back of the body chamber and are connected.
Also comprise antenna chamber 1, the lower inwall of antenna chamber is provided with layer dielectric substrate 3, the upper inwall of antenna chamber is provided with top dielectric substrate 2, back of the body chamber bending right-angled intersection micro-strip paster antenna 4 is arranged on the one side of top dielectric substrate face to lower floor's dielectric substrate 3, be connected with top dielectric substrate after paster antenna minor matters 41 bend, micro-band common board 42 keeps gap with top dielectric substrate.
Described 90 ° of phase shifters 9 are the conducting copper belt of a U-shaped, and one end of 90 ° of phase shifters 9 is connected with an output of one-to-two power division network 8, and the other end of 90 ° of phase shifters 9 bends right-angled intersection micro-strip paster antenna by wire B with back of the body chamber and is connected.
SMP type joint was also connected with electric capacity feed structure before access signal.
During enforcement, its structure specifically adopted is as follows: phase array large-angle scanning antenna system, comprise antenna chamber 1, the lower inwall of antenna chamber is provided with layer dielectric substrate 3, the upper inwall of antenna chamber is provided with top dielectric substrate 2, top dielectric substrate face is provided with back of the body chamber bending right-angled intersection micro-strip paster antenna 4 to the one side of lower floor's dielectric substrate 3, back of the body chamber bending right-angled intersection micro-strip paster antenna comprises micro-band common board 42 of rectangle, four limits of micro-band common board 42 are all extended with paster antenna minor matters 41, 4 paster antenna minor matters 41 are connected with top dielectric substrate after all carrying out bending, micro-band common board 42 keeps gap with top dielectric substrate, layer dielectric substrate 3 is also provided with feed power division network, and feed power division network comprises 2 outlet lines, and 2 outlet lines are connected respectively by the paster antenna minor matters 41 that wire A5 and wire B6 are adjacent with two.
The principle of said structure is: by microband paste is bent, reduce the size of right-angled intersection microband paste, thus achieve the broad beam of antenna, and traditional structure is directly arranged on top dielectric substrate by right-angled intersection microband paste, the present invention is installed on top dielectric substrate after four of right-angled intersection microband paste paster antenna minor matters 41 being bent again, and the right-angled intersection microband paste after bending becomes back of the body chamber bending right-angled intersection micro-strip paster antenna 4, in order to realize the impedance variation that circular polarization and solution size reduce to bring, therefore, the present invention is also provided with feed power division network.
embodiment 2:
As shown in Figure 1, Figure 2, Figure 3 shows.
On the basis of embodiment 1, preferably, described feed power division network comprises one-to-two power division network 8 and 90 ° of phase shifters 9, one-to-two power division network 8 comprises 2 feed arms, 2 feed arms are connected on a signal input part simultaneously, wherein, 1 feed arm is directly connected with paster antenna minor matters 41 by wire A5, is connected after another 1 feed arm is connected with 90 ° of phase shifters 9 by wire B6 with paster antenna minor matters 41.Feed power division network postpones two paster antenna minor matters 41 feed respectively by one-to-two power division network and 90 ° of phase shifters 9, realize circular polarization, simultaneously, the impedance variation adopting the mode of electric capacity feed to overcome antenna size to reduce to bring, makes antenna all reach good impedance matching in whole working band.Signal enters the one-to-two power division network of antenna after being connected with the SMP type joint of antenna element by radio frequency cable, input signal constant amplitude homophase exports by one-to-two power division network, the direct feed antenna of one road input signal, another road input signal feed antenna after 90 ° of phase shifters, thus form two orthogonal electric fields at Antenna aperture, this electric field amplitude is equal, phase 90 °, forms circular polarization electromagnetic wave in space.
embodiment 3:
As shown in Figure 1, Figure 2, Figure 3 shows.
On the basis of embodiment 2, preferably, described 90 ° of phase shifters 9 are the conducting copper belt of a U-shaped, and one end of 90 ° of phase shifters 9 is connected with the feed arm of one-to-two power division network 8, and one end of 90 ° of phase shifters 9 is connected with wire B.Through research, the present invention adopts the conducting copper belt of U-shaped as 90 ° of phase shifters 9, can reach reduced size, and its Phasing is best simultaneously, can make the circular polarization best results of whole antenna element.
embodiment 4:
As shown in Figure 1, Figure 2, Figure 3 shows.
On the basis of embodiment 2, preferably, described signal input part is connected with SMP type joint 7.
embodiment 5:
As shown in Figure 1, Figure 2, Figure 3 shows.
On the basis of embodiment 1, preferably, overlook on direction, the projection of paster antenna minor matters 41 does not overlap with the projection of micro-band common board 42.Preferably, paster antenna minor matters 41 first after top dielectric substrate direction bending 90 degree, bend 90 degree again to the direction away from micro-band common board 42.The back of the body chamber bending right-angled intersection micro-strip paster antenna 4 formed after adopting above-mentioned bending mode, can ensure to obtain less size, can also reach wider broad beam.
Preferably, an output of one-to-two power division network bends right-angled intersection micro-strip paster antenna by electric capacity feed structure 10 with back of the body chamber and is connected, and the output of 90 ° of phase shifters bends right-angled intersection micro-strip paster antenna by electric capacity feed structure 10 with back of the body chamber and is connected.
Micro-strip resistance 11 is provided with between 2 outputs of one-to-two power division network.
As mentioned above, then well the present invention can be realized.
Claims (5)
1. phase array large-angle scanning antenna system, it is characterized in that: the SMP type joint comprising access input signal, comprise the one-to-two power division network exported by input signal constant amplitude homophase, comprise the 90 ° of phase shifters carrying out 90 degree of phase shifts, also comprise back of the body chamber bending right-angled intersection micro-strip paster antenna, back of the body chamber bending right-angled intersection micro-strip paster antenna comprises micro-band common board (42) of rectangle, four limits of micro-band common board (42) are all extended with paster antenna minor matters (41), paster antenna minor matters (41) bend 90 degree to the direction away from micro-band common board (42) after first upwards bending 90 degree again, the input of one-to-two power division network is connected with SMP type joint, an output of one-to-two power division network bends right-angled intersection micro-strip paster antenna with back of the body chamber and is connected, another output of one-to-two power division network is connected with 90 ° of phase shifters, the output of 90 ° of phase shifters bends right-angled intersection micro-strip paster antenna with back of the body chamber and is connected.
2. phase array large-angle scanning antenna system according to claim 1, it is characterized in that: also comprise antenna chamber (1), the lower inwall of antenna chamber is provided with layer dielectric substrate (3), the upper inwall of antenna chamber is provided with top dielectric substrate (2), back of the body chamber bending right-angled intersection micro-strip paster antenna (4) is arranged on the one side of top dielectric substrate face to lower floor's dielectric substrate (3), be connected with top dielectric substrate after paster antenna minor matters (41) bending, micro-band common board (42) and top dielectric substrate keep gap.
3. phase array large-angle scanning antenna system according to claim 1, it is characterized in that: described 90 ° of phase shifters (9) are the conducting copper belt of a U-shaped, one end of 90 ° of phase shifters (9) is connected with an output of one-to-two power division network (8), and the other end of 90 ° of phase shifters (9) bends right-angled intersection micro-strip paster antenna by wire B with back of the body chamber and is connected.
4. phase array large-angle scanning antenna system according to claim 1, it is characterized in that: an output of one-to-two power division network bends right-angled intersection micro-strip paster antenna by electric capacity feed structure (10) with back of the body chamber and is connected, the output of 90 ° of phase shifters bends right-angled intersection micro-strip paster antenna by electric capacity feed structure (10) with back of the body chamber and is connected.
5. phase array large-angle scanning antenna system according to claim 1, is characterized in that: be provided with micro-strip resistance (11) between 2 outputs of one-to-two power division network.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510372906.0A CN104953282A (en) | 2015-07-01 | 2015-07-01 | Wide-angle scanning phased array antenna system |
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| CN201510372906.0A CN104953282A (en) | 2015-07-01 | 2015-07-01 | Wide-angle scanning phased array antenna system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070132642A1 (en) * | 2005-12-08 | 2007-06-14 | Elta Systems Ltd. | Patch antenna element and application thereof in a phased array antenna |
| CN201425968Y (en) * | 2009-04-15 | 2010-03-17 | 大连海事大学 | Double frequency channel satellite navigation receiving antenna |
| CN102651504A (en) * | 2011-02-24 | 2012-08-29 | 启碁科技股份有限公司 | Planar dual-polarized antenna |
-
2015
- 2015-07-01 CN CN201510372906.0A patent/CN104953282A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070132642A1 (en) * | 2005-12-08 | 2007-06-14 | Elta Systems Ltd. | Patch antenna element and application thereof in a phased array antenna |
| CN201425968Y (en) * | 2009-04-15 | 2010-03-17 | 大连海事大学 | Double frequency channel satellite navigation receiving antenna |
| CN102651504A (en) * | 2011-02-24 | 2012-08-29 | 启碁科技股份有限公司 | Planar dual-polarized antenna |
Non-Patent Citations (2)
| Title |
|---|
| NAVEEN KR. VISHWAKARMA等: "DESIGN CONSIDERATIONS FOR A WIDE SCAN CAVITY BACKED PATCH ANTENNA FOR ACTIVE PHASED ARRAY RADAR", 《ANTENNA WEEK(IAW)》 * |
| ZHAO WANG等: "A Broad Beam-width Microstrip Cross Antenna Design for Wide Scan Angle Phased Array", 《MICROWAVE WORKSHOP SERIES ON RF AND WIRELESS TECHNOLOGIES FOR BIOMEDICAL AND HEALTHCARE APPLICATION(IMWS-BIO)，2013 IEEE MTT-S INTERNATIONAL》 * |
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Application publication date: 20150930 |
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