AU2006203109A1 - Dual polarization satellite antenna - Google Patents
Dual polarization satellite antenna Download PDFInfo
- Publication number
- AU2006203109A1 AU2006203109A1 AU2006203109A AU2006203109A AU2006203109A1 AU 2006203109 A1 AU2006203109 A1 AU 2006203109A1 AU 2006203109 A AU2006203109 A AU 2006203109A AU 2006203109 A AU2006203109 A AU 2006203109A AU 2006203109 A1 AU2006203109 A1 AU 2006203109A1
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- AU
- Australia
- Prior art keywords
- feeding
- board
- radiation
- circuit board
- arrangement
- 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.)
- Abandoned
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/064—Two dimensional planar arrays using horn or slot aerials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/288—Satellite antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0012—Radial guide fed arrays
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Description
Regulation 3.2
AUSTRALIA
Patents Act 1990 COMPLETE SPECIFICATION STANDARD PATENT
APPLICANT:
Invention Title:
MOTONIX
DUAL POLARIZATION SATELLITE
ANTENNA
The following statement is a full description of this invention, including the best method of performing it known to me: DUAL POLARIZATION SATELLITE ANTENNA BACKGROUND OF THE INVENTION 1. Field of the Invention MN The present invention relates, in general, to dual Spolarization satellite antennas and, more particularly, to a dual polarization satellite antenna, in which a first feeding circuit board and a second feeding circuit board feed signals to a first radiation board and a second radiation board, respectively, to generate a dual-polarized signal including vertically and horizontally polarized signals, and first and second slot feeding units, formed in the first and second feeding circuit boards, are respectively fed with signals at the center portions of a plurality of radiation slots formed in the first and second radiation boards to cause the plurality of radiation slots to operate individually, thus generating high gain antenna characteristics, and in which feeding covers formed on a feeding board reflect signals, emitted upwards from the feeding circuit boards, in a downward direction, thus minimizing feed loss.
2. Description of the Related Art As the prior art for satellite slot antennas, there is a scheme, disclosed in Korean Patent Laid-Open Publication No.
1993-0020766, including a slot board on a satellite receiving c-i antenna, a plurality of slots formed in the slot board to have a size of k/2 with respect to the center frequency of the Cantenna, a feeding circuit placed below the slot board and S 5 disposed at the center portion of the arrangement of slots, a (N ground plane formed below the feeding circuit, a first foam Cinsulation unit interposed between the slot board and the feeding circuit, a second foam insulation unit interposed between the feeding circuit and the ground plane, and a radome for protecting the main body of the antenna from climate or temperature variation.
However, the prior art is problematic in that a feeding circuit feeds an externally applied signal in a single mode and transmits or receives only a single polarized signal, thus decreasing the efficiency of the antenna.
Further, the prior art is also problematic in that, since a feeding circuit is formed in a dipole structure and feeds signals to a plurality of slots, two slots exhibit combined antenna characteristics, so that the gain characteristics of the conventional antenna are about twice as low as those of the antenna of the present invention, which will be described later, and in which slots are individually operated.
SUMMARY OF THE INVENTION m Accordingly, the present invention has been made keeping c-i in mind the above problems occurring in the prior art, and an object of the present invention is to provide an antenna, in which a first feeding circuit board for feeding a horizontally polarized signal and a second feeding circuit board for ND feeding a vertically polarized signal are separately provided, Sthus transmitting or receiving a dual-polarized signal including vertically and horizontally polarized signals.
Another object of the present invention is to provide an antenna in which first and second slot feeding units formed in first and second feeding circuit boards are placed at the center portions of the radiation slots of the first and second radiation boards to perform impedance matching, and in which the first and second slot feeding units of the first and second feeding circuit boards feed signals to cause radiation slots, formed in the first and second radiation boards, to be individually operated, thus remarkably improving the gain characteristics of the antenna compared to a conventional antenna.
A further object of the present invention is to provide an antenna, in which feeding covers are provided on a feeding board, so that fed signals, emitted upwards from waveguide feeding units formed in first and second feeding circuit boards, are reflected in a downward direction, thus minimizing feed loss.
m In accordance with one aspect of the present invention to Cl accomplish the above objects, there is provided a dual polarization satellite antenna, comprising a reflecting board, O in which a waveguide feeding unit for transmitting a signal is formed, a cavity board formed on the reflecting board and IND provided with a plurality of cavities therein, a first feeding O circuit board for feeding a horizontally polarized signal to a top of the cavity board, a first radiation board placed on the first feeding circuit board and constructed so that a plurality of radiation slots, which form an M x N arrangement of sub-groups, each having an m x n arrangement, are provided, thus radiating a horizontally polarized signal, a second feeding circuit board for feeding a vertically polarized signal to a top of the first radiation board, a second radiation board placed on the second feeding circuit board and constructed so that a plurality of radiation slots, which form an M' x N' arrangement of sub-groups, each having an m' x n' arrangement, are provided, thus radiating a vertically polarized signal, and dielectric substrates interposed between the above boards.
Preferably, the first feeding circuit board may comprise a single feeding unit for providing a signal transmitted from the reflecting board, a feeder line for forming a tree structure that is symmetrical with respect to the feeding c-4 unit, and a plurality of first slot feeding units which are formed on an end of the feeder line and which form an A x B arrangement of H-shaped groups, thus feeding in-phase signals to the radiation slots of the first radiation board.
Preferably, the second feeding circuit board may comprise C a single feeding unit for providing a signal transmitted from the reflecting board, a feeder line for forming a tree structure that is symmetrical with respect to the feeder line, and a plurality of second slot feeding units which are formed on an end of the feeder line by rotating the first slot feeding units by an angle of 900, and which form an A' x B' arrangement of I-shaped groups, thus feeding in-phase signals to the radiation slots of the second radiation board.
Preferably, the first slot feeding units formed in the first feeding circuit board may be formed at center portions of the radiation slots, so that the radiation slots are individually operated.
Preferably, the second slot feeding units formed in the second feeding circuit board may be formed at center portions of the radiation slots, so that the radiation slots are individually operated.
In accordance with another aspect of the present invention to accomplish the above objects, there is provided a c-i dual polarization satellite antenna, comprising a reflecting board in which a waveguide feeding unit for transmitting a signal is formed, a cavity board formed on the reflecting S 5 board and provided with a plurality of cavities therein, a 0 No first feeding circuit board for feeding a horizontally O polarized signal to a top of the cavity board, a first radiation board placed on the first feeding circuit board and constructed so that a plurality of radiation slots, which form an M x N arrangement of sub-groups, each having an m x n arrangement, are provided, thus radiating a horizontally polarized signal, a second feeding circuit board for feeding a vertically polarized signal to a top of the first radiation board, a second radiation board placed on the second feeding circuit board and constructed so that a plurality of radiation slots, which form an M' x N' arrangement of sub-groups, each having an m' x n' arrangement, is provided, _thus radiating a vertically polarized signal, a feeding board formed on the second radiation board, and dielectric substrates interposed between the above boards, other than the feeding board.
Preferably, the first feeding circuit board may comprise a single feeding unit for providing a signal transmitted from the reflecting board, a feeder line for forming a tree structure that is symmetrical with respect to the feeding C unit, and a plurality of first slot feeding units which are C formed on an end of the feeder line and which form an A x B p arrangement of H-shaped groups, thus feeding in-phase signals ci 5 to the radiation slots of the first radiation board.
Preferably, the second feeding circuit board may comprise a single feeding unit for providing a signal transmitted from the reflecting board, a feeder line for forming a tree structure that is symmetrical with respect to the feeder line, and a plurality of second slot feeding units which are formed on an end of the feeder line by rotating the first slot feeding units by an angle of 90', and which form an A' x B' arrangement of I-shaped groups, thus feeding in-phase signals to the radiation slots of the second radiation board.
Preferably, the first slot feeding units formed in the first feeding circuit board may be formed at center portions of the radiation slots, so that the radiation slots are individually operated.
Preferably, the second slot feeding units formed in the second feeding circuit board may be formed at center portions of the radiation slots, so that the radiation slots are individually operated.
Preferably, the feeding board may comprise feeding covers that correspond to respective feeding units formed in the C-i first and second feeding circuit boards, respectively, and that reflect fed signals, emitted upwards from the feeding units, in a downward direction.
M c NO BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. 1 is a diagram showing the construction of a dual polarization satellite antenna according to an embodiment of the present invention; FIG. 2 is a detailed diagram of the reflecting board of FIG. 1; FIG. 3 is a detailed diagram of the cavity board of FIG.
1; FIG. 4 is a detailed diagram of the first feeding circuit board of FIG. 1; FIG. 5 is a detailed diagram of the first radiation board of FIG. 1; FIG. 6 is a detailed diagram of the second feeding circuit board of FIG. 1; FIG. 7 is a detailed diagram of the second radiation board of FIG. 1; c-i FIG. 8 is a projection view showing an arrangement in which the first radiation board and the first feeding circuit O board of FIG. 1 overlap each other; FIG. 9 is a projection view showing an arrangement in INO which the second radiation board and the second feeding O circuit board of FIG. 1 overlap each other; FIG. 10 is a diagram showing the construction of a dual polarization satellite antenna according to another embodiment of the present invention; and FIG. 11 is a diagram showing signal flow in feeding covers formed on the feeding board of FIG. DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.
Reference now should be made to the drawings, in which the same reference numerals are used throughout the different drawings to designate the same or similar components.
FIG. 1 is a diagram showing the construction of a dual polarization satellite antenna according to an embodiment of the present invention. The dual polarization satellite antenna includes a reflecting board 100, in which a waveguide feeding unit 110 for transmitting a signal is formed, a cavity board 200 formed on the reflecting board 100 and provided with C a plurality of cavities 220 therein, a first feeding circuit board 300 for feeding a horizontally polarized signal to the Stop of the cavity board 200, a first radiation board 400 placed on the first feeding circuit board 300, and constructed Iso that a plurality of radiation slots 420, which form an M x N arrangement of sub-groups 900, each having an m x n arrangement, are provided, thus radiating a horizontally polarized signal, a second feeding circuit board 500 for feeding a vertically polarized signal to the top of the first radiation board 400, a second radiation board 600 placed on the second feeding circuit board 500, and constructed so that a plurality of radiation slots 620, which form an M' x N' arrangement of sub-groups 900, each having an m' x n' arrangement, are provided, thus radiating a vertically polarized signal, and dielectric substrates 800 interposed between the above boards.
In detail, as shown in FIG. 2, the reflecting board 100 is implemented using a metallic plate having high conductibility, and includes a low-noise block down-converter (LNB). The reflecting board 100 includes a waveguide feeding unit 110 which is formed at the center portion thereof and in which a horizontal polarization feeding waveguide 111 and a vertical polarization feeding waveguide 112 are formed, thus CI allowing signals to be transmitted through the waveguide feeding unit 110.
In particular, the horizontal polarization feeding waveguide 111 of the reflecting board 100 transmits a signal IN to a feeding unit 311 formed in the first feeding circuit Sboard 300, and the vertical polarization feeding waveguide 112 transmits a signal to a feeding unit 512 formed in the second feeding circuit board 500, thus respectively feeding signals to the first and second feeding circuit boards 300 and 500 so as to generate a dual-polarized signal including vertically and horizontally polarized signals.
The dielectric substrates 800 include first, second, third, fourth and fifth dielectric substrates 810, 820, 830, 840 and 850.
The first dielectric substrate 810 is made of air or a foam material and is interposed between the reflecting board 100 and the cavity board 200, thus decreasing feed loss occurring in the reflecting board 100.
The second dielectric substrate 820 is made of air or a foam material and is interposed between the cavity board 200 and the first feeding circuit board 300. The third dielectric substrate 830 is made of air or a foam material and is interposed between the first feeding circuit board 300 and the first radiation board 400. The fourth dielectric substrate 840 is made of air or a foam material and is interposed C between the first radiation board 400 and the second feeding circuit board 500. The fifth dielectric substrate 850 is made of air or a foam material and is interposed between the second feeding circuit board 500 and the second radiation board 600.
IND The second, third, fourth and fifth dielectric substrates 820, O 830, 840 and 850 perform the same function as the first dielectric substrate 810.
As shown in FIG. 3, in the cavity board 200, a plurality of cavities 220 are formed to correspond to the plurality of radiation slots 420, which form an M x N arrangement of subgroups 900, each having an m x n arrangement, in the first radiation board 400, and the plurality of radiation slots 620, which form an M' x N' arrangement of sub-groups 900, each having an m' x n' arrangement, in the second radiation board 600, respectively, thus remarkably increasing the gain of the antenna as well as the bandwidth of the antenna.
In particular, as the depth of each cavity 220 formed in the cavity board 200 increases by about 10% of the wavelength, the bandwidth of the antenna increases proportionally. If the center frequency of the antenna is set to 12 GHz in a KU Band of 11 GHz to 14 GHz, the wavelength k is 25 mm, and thus the depth of the cavity is preferably set to about 2.5 mm.
As shown in FIG. 4, the first feeding circuit board 300 C includes a single feeding unit 311 for providing a signal transmitted from the reflecting board 100, a feeder line 314 for forming a tree structure that is symmetrical with respect to the feeding unit 311, and first slot feeding units 313 for N forming an A x B arrangement of H-shaped groups on the end of the feeder line 314. Accordingly, the feeding unit 311 receives a signal transmitted from the horizontal polarization feeding waveguides 111 and 211, and provides a horizontally polarized signal to the first slot feeding units 313, which form an A x B arrangement of H-shaped groups.
The first radiation board 400 is formed on the first feeding circuit board 300. As shown in FIG. 5, the plurality of radiation slots 420, which form an M x N arrangement of sub-groups 900, each having an m x n arrangement, are arranged to correspond to the plurality of first slot feeding units 313, which form an A x B arrangement of H-shaped groups in the first feeding circuit board 300, in a one-to-one manner. A waveguide feeding unit 410 is formed at the center portion of the first radiation board 400.
Further, the first radiation board 400 matches the first feeding circuit board 300, thus preventing a reduction in -mn antenna efficiency caused by leaky waves that are generated C from the first feeding circuit board 300, and generating signals having accurate antenna characteristics.
SEspecially, as shown in FIG. 8, the first radiation board 400 and the first feeding circuit board 300 are constructed so S that the plurality of radiation slots 420, which form an M x N arrangement of sub-groups 900, each having an m x n arrangement, in the first radiation board 400, corresponds to the plurality of first slot feeding units 313, which form an A x B arrangement of H-shaped groups in the first feeding circuit board 300, in a one-to-one manner. The first slot feeding units 313 are placed in the center portions of the radiation slots 420. Accordingly, the distances between neighboring first slot feeding units 313 among the plurality thereof can be increased, and input impedance between the plurality of radiation slots 420 can be improved.
Moreover, the feeder line 314, having a tree structure and symmetrically formed around the feeding unit 311 in the first feeding circuit board 300, forms a parallel feeding structure in which equipartition is used for consistent signal intensity and which is dichotomously branching. Further, the phase of the first slot feeding units 313 is inverted by an angle of 1800, and a basically anti-phase structure is corrected to an in-phase structure, so that the feeding C-i structure is simplified. In addition, the radiation slots 420 formed in the first radiation board 400 are individually O operated, so that the performance of the antenna is maintained 5 about twice as high as that of the conventional antenna, in C which two radiation slots are operated as a single combination.
As shown in FIG. 6, the second feeding circuit board 500 receives a signal transmitted from the vertical polarization feeding waveguides 112, 212 and 412 through the feeding unit 512. The feeding unit 512 provides a vertically polarized signal to second slot feeding units 513 formed by rotating the first slot feeding units 313 by an angle of 900.
Further, as shown in FIG. 7, the second radiation board 600 is constructed so that the plurality of radiation slots 620, which form an M' x N' arrangement of sub-groups 900, each having an m' x n' arrangement, in the second radiation board 600, corresponds to the plurality of second slot feeding units 513 formed in the second feeding circuit board 500 in a oneto-one manner. A waveguide feeding unit 610 is formed at the center portion of the second radiation board 600.
Further, the second radiation board 600 matches the second feeding circuit board 500, thus preventing a reduction in antenna efficiency caused by leaky waves that are generated from the second feeding circuit board 500, and generating C signals having accurate antenna characteristics.
Especially, as shown in FIG. 9, the second radiation _board 600 and the second feeding circuit board 500 are constructed so that the plurality of radiation slots 620, cIN which form an M' x N' arrangement of sub-groups 900, each having an m' x n' arrangement, in the second radiation board 600, corresponds to the plurality of second slot feeding units 513, which are formed by rotating the first slot feeding units 313, forming an A x B arrangement of H-shaped groups, by an angle of 90 and which form an A' x B' arrangement of Ishaped groups, in a one-to-one manner. The second slot feeding units 513 formed in the second feeding circuit board 500 are placed in the center portions of the radiation slots 620 formed in the second radiation board 600. Accordingly, the distances between neighboring second slot feeding units 513 among the plurality thereof can be increased, and input impedance between the plurality of radiation slots 620 can be improved.
Moreover, the feeder line 514, symmetrically formed around the feeding unit 512 in the second feeding circuit board 500, forms a parallel feeding structure in which equipartition is used for consistent signal intensity and which is dichotomously branching. Further, the phase of the second slot feeding units 513 is inverted by an angle of 1800, and the basically anti-phase structure is corrected to an inphase structure, so that the feeding structure is simplified.
In addition, the radiation slots 620 formed in the second IND radiation board 600 are individually operated, so that the O performance of the antenna is maintained about twice as high as that of the conventional antenna, in which two radiation slots are operated as a single combination.
According to a preferred embodiment, in the m x n or m' x n' arrangement, m=n=2 may be set, in the M x N or M' X N' arrangement, M=N=10 may be set, and in the A x B or A' X B' arrangement, A=B=10 may be set.
FIG. 10 is a diagram showing the construction of a dual polarization satellite antenna according to another embodiment of the present invention. The dual polarization satellite antenna includes a reflecting board 100, in which a waveguide feeding unit 110 for transmitting a signal is formed, a cavity board 200 formed on the reflecting board 100 and provided with a plurality of cavities 220 therein, a first feeding circuit board 300 for feeding a horizontally polarized signal to the top of the cavity board 200, a first radiation board 400 placed on the first feeding circuit board 300, and constructed so that a plurality of radiation slots 420, which form an M x N arrangement of sub-groups 900, each having an m x n arrangement, is provided, thus radiating a horizontally O polarized signal, a second feeding circuit board 500 for ND 5 feeding a vertically polarized signal to the top of the first O radiation board 400, a second radiation board 600 placed on the second feeding circuit board 500, and constructed so that a plurality of radiation slots 620, which form an M' x N' arrangement of sub-groups 900, each having an m' x n' arrangement, is provided, thus radiating a vertically polarized signal, a feeding board 700 formed on the second radiation board 600, and dielectric substrates 800 interposed between the above boards, other than the feeding board 700.
In detail, the dual polarization satellite antenna of FIG. 10 further includes the feeding board 700 on the second radiation board 600. As shown in FIG. 11, the feeding board 700 is constructed so that feeding covers 711 and 712 are formed on a waveguide feeding unit 610 that is formed in the second radiation board 600, and are operated to reflect signals emitted upwards from the feeding units 311 and 512, formed in the first and second feeding circuit boards 300 and 500, in a downward direction, thus minimizing feed loss.
According to another preferred embodiment, in the m x n array, m=n=2 may be set, and in the M x N arrangement, may be set.
O As described above, the present invention is advantageous I 5 in that first and second feeding circuit boards feed signals y to first and second radiation boards with respect to respective polarization directions, respectively, thus generating a dual-polarized signal including vertically and horizontally polarized signals. Further, the present invention is advantageous in that first and second slot feeding units formed in the first and second feeding circuit boards are provided with signals at the center portions of a plurality of radiation slots arranged and formed in first and second radiation boards, so that the radiation slots are individually operated, thus having high-gain antenna characteristics. In addition, the present invention is advantageous in that feeding covers are formed on a feeding board and are operated to reflect fed signals, emitted upwards from the waveguide feeding units of first and second feeding circuit boards, in a downward direction, thus minimizing feed loss.
Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing C from the scope and spirit of the invention as disclosed in the accompanying claims.
Throughout this specification and the claims which follow, unless the context requires otherwise, the word C"comprise", and variations such as "comprises" and "comprising", will be understood to imply the inclusion of a stated integer or step or group of integers or steps but not the exclusion of any other integer or step or group of integers or steps.
The reference to any prior art in this specification is not, and should not be taken as, an acknowledgement or any form of suggestion that the prior art forms part of the common general knowledge in Australia.
Claims (12)
1. A dual polarization satellite antenna, comprising: O a reflecting board, in which a waveguide feeding unit for transmitting a signal is formed; a cavity board formed on the reflecting board and Sprovided with a plurality of cavities therein; a first feeding circuit board for feeding a horizontally polarized signal to a top of the cavity board; a first radiation board placed on the first feeding circuit board and constructed so that a plurality of radiation slots, which form an M x N arrangement of sub-groups, each having an m x n arrangement, are provided, thus radiating a horizontally polarized signal; a second feeding circuit board for feeding a vertically -poi-rized signal- -to a top of the -firs- radiatio bard-.. a second radiation board placed on the second feeding circuit board and constructed so that a plurality of radiation slots, which form an M' x N' arrangement of sub-groups, each having an m' x n' arrangement, are provided, thus radiating a vertically polarized signal; and dielectric substrates interposed between the above boards. CI
2. The dual polarization satellite antenna according to claim 1, wherein the first feeding circuit board comprises: a single feeding unit for providing a signal transmitted from the reflecting board; ND a feeder line for forming a tree structure that is Ssymmetrical with respect to the feeding unit; and a plurality of first slot feeding units which are formed on an end of the feeder line and which form an A x B arrangement of H-shaped groups, thus feeding in-phase signals to the radiation slots of the first radiation board.
3. The dual polarization satellite antenna according to claim 1 or 2, wherein the second feeding circuit board comprises: a single feeding unit for providing a signal transmitted from the reflecting board; a feeder line for forming a tree structure that is symmetrical with respect to the feeder line; and a plurality of second slot feeding units which are formed on an end of the feeder line by rotating the first slot feeding units by an angle of 900, and which form an A' x B' arrangement of I-shaped groups, thus feeding in-phase signals to the radiation slots of the second radiation board.
4. The dual polarization satellite antenna according to claim 3, wherein the first slot feeding units formed in the first feeding circuit board are formed at center portions of ND the radiation slots, so that the radiation slots are Sindividually operated.
The dual polarization satellite antenna according to claim 3, wherein the second slot feeding units formed in the second feeding circuit board are formed at center portions of the radiation slots, so that the radiation slots are individually operated.
6. A dual polarization satellite antenna, comprising: a reflecting board in which a waveguide feeding unit for transmitting a signal is formed; a cavity board formed on the reflecting board and provided with a plurality of cavities therein; a first feeding circuit board for feeding a horizontally polarized signal to a top of the cavity board; a first radiation board placed on the first feeding circuit board and constructed so that a plurality of radiation slots, which form an M x N arrangement of sub-groups, each having an m x n arrangement, are provided, thus radiating a horizontally polarized signal; C a second feeding circuit board for feeding a vertically polarized signal to a top of the first radiation board; i 5 a second radiation board placed on the second feeding circuit board and constructed so that a plurality of radiation slots, which form an M' x N' arrangement of sub-groups, each having an m' x n' arrangement, is provided, thus radiating a vertically polarized signal; a feeding board formed on the second radiation board; and dielectric substrates interposed between the above boards, other than the feeding board.
7. The dual polarization satellite antenna according to claim 6, wherein the first feeding circuit board comprises: a single feeding unit for providing a signal transmitted from the reflecting board; a feeder line for forming a tree structure that is symmetrical with respect to the feeding unit; and a plurality of first slot feeding units which are formed on an end of the feeder line and which form an A x B arrangement of H-shaped groups, thus feeding in-phase signals to the radiation slots of the first radiation board. CI
8. The dual polarization satellite antenna according to claim 6 or 7, wherein the second feeding circuit board comprises: a single feeding unit for providing a signal transmitted ND from the reflecting board; a feeder line for forming a tree structure that is symmetrical with respect to the feeder line; and a plurality of second slot feeding units which are formed on an end of the feeder line by rotating the first slot feeding units by an angle of 900, and which form an A' x B' arrangement of I-shaped groups, thus feeding in-phase signals to the radiation slots of the second radiation board.
9. The dual polarization satellite antenna according to claim 8, wherein the first slot feeding units formed in the first feeding circuit board are formed at center portions of the radiation slots, so that the radiation slots are individually operated.
The dual polarization satellite antenna according to claim 8, wherein the second slot feeding units formed in the second feeding circuit board are formed at center portions of the radiation slots, so that the radiation slots are individually operated.
11. The dual polarization satellite antenna according to claim 6, wherein the feeding board comprises feeding covers that correspond to respective feeding units formed in the NO first and second feeding circuit boards, respectively, and Sthat reflect fed signals, emitted upwards from the feeding units, in a downward direction.
12. A dual polarization satellite antenna substantially as herein described with reference to the Drawings.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2006-60115 | 2006-06-30 | ||
| KR1020060060115A KR20080001783A (en) | 2006-06-30 | 2006-06-30 | Dule polarization satellite antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2006203109A1 true AU2006203109A1 (en) | 2008-01-17 |
Family
ID=38973093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2006203109A Abandoned AU2006203109A1 (en) | 2006-06-30 | 2006-07-20 | Dual polarization satellite antenna |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20080001783A (en) |
| CN (1) | CN101098048A (en) |
| AU (1) | AU2006203109A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437431A (en) * | 2011-08-23 | 2012-05-02 | 北京遥测技术研究所 | Multi-polar plane antenna |
| CN103500885B (en) * | 2013-09-12 | 2016-03-02 | 中国人民解放军92941部队 | A kind of X-band wide band high-gain, low friendship ultimate ratio Dual-polarized Micro Strip Array row |
| KR102302466B1 (en) * | 2014-11-11 | 2021-09-16 | 주식회사 케이엠더블유 | Waveguide slotted array antenna |
-
2006
- 2006-06-30 KR KR1020060060115A patent/KR20080001783A/en not_active Application Discontinuation
- 2006-07-20 AU AU2006203109A patent/AU2006203109A1/en not_active Abandoned
- 2006-08-21 CN CNA2006101213744A patent/CN101098048A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| KR20080001783A (en) | 2008-01-04 |
| CN101098048A (en) | 2008-01-02 |
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