KR100841347B1 - Dule polarization satellite antenna - Google Patents

Abstract

According to an embodiment of the present invention, a cavity substrate formed on a reflective substrate and an upper layer of the reflective substrate and a first feed circuit board that feeds a horizontal polarization signal to the upper layer of the cavity substrate and a subgroup in an m × n arrangement on an upper layer of the first feed circuit board And a plurality of radiation slots forming an M × N array, the first radiating substrate radiating a horizontal polarization signal and the second feeding circuit board feeding a vertical polarization signal to an upper layer of the first radiating substrate. In the upper layer of the circuit board, a plurality of radiation slots are formed in a subgroup of m ′ × n´ array to form an M ′ × N´ array so that the second radiation substrate and the upper layer of the second radiation substrate emit vertical polarization signals. The present invention relates to a dual polarized satellite antenna, wherein a substrate for feeding is formed.

Accordingly, the present invention provides first and second feed circuit boards, respectively, to transmit and receive a dual polarized signal, and slot feeders formed on the first and second feed circuit boards each have a center of the radiation slots of the first and second radiating substrates. In addition, the gain characteristics of the antenna are greatly improved by feeding each of the plurality of radiating slots, respectively, and the upper part of the waveguide feeder formed on the first and second feeder circuit boards having a feeder cover on the feeder board. By reflecting the feed signal generated in the downward direction, there is an effect of minimizing the feed loss.

Feed, Slot, Radiate, Impedance, Gain, Dielectric

Description

Dual polarized satellite antenna {DULE POLARIZATION SATELLITE ANTENNA}

The present invention relates to a dual polarized satellite antenna, and more particularly, a first feed circuit board feeds a first radiating substrate and a second feed circuit board feeds a second radiating substrate, respectively, to generate vertical and horizontal double polarized signals. The first and second slot feeding parts formed on the first and second feeding circuit boards are respectively fed to the centers of the plurality of radiating slots formed on the first and second radiating substrates to operate the plurality of radiating slots, respectively. The present invention relates to an antenna that not only generates a high gain antenna characteristic, but also minimizes a power loss by reflecting a signal generated in a top direction from a power feeding circuit board in a downward direction.

As a related art of a satellite slot antenna, Korean Patent Laid-Open Publication No. 1993-0020766 discloses a slot substrate of a satellite receiving antenna, a plurality of slots having a size of lambda / 2 of an antenna center frequency on the slot substrate, and a lower end of the slot substrate. A first foam dielectric formed between the feed circuit and the ground plane formed at the lower end of the feed circuit, the first foam dielectric formed between the slot substrate and the feed circuit, and a second foam dielectric formed between the feed circuit and the ground surface; It was a technology that comprises a radome to protect the antenna body from climate or temperature fluctuation.

However, the conventional technology has a problem in that the efficiency of the antenna is lowered by feeding a single polarized signal by feeding a single signal from a power supply circuit.

Another problem is that the feeder circuit is formed in a dipole structure and is fed to a plurality of slots so that the two slots exhibit one combined antenna characteristic. There was a problem that the gain characteristic is about twice lowered.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to provide a first feed circuit board for feeding a horizontal polarization signal and a second feed circuit board for feeding a vertical polarization signal, respectively. Another object is to provide an antenna for transmitting and receiving a horizontal double polarized signal.

Another object is that the first and second slot feed portions formed on the first and second feed circuit boards are formed in the center of the radiation slots of the first and second radiating substrates to match impedance, It is an object of the present invention to provide an antenna in which the first and second slot feeders are fed so that a plurality of radiating slots formed in the first and second radiating substrates are operated individually, so that the gain characteristics of the antenna are significantly improved than conventional antennas.

Still another object is to provide an antenna having a feed cover on a feed substrate and reflecting a feed signal generated upward in a waveguide feed portion formed on the first and second feed circuit boards in a downward direction, thereby minimizing a feed loss. Its purpose is to.

In order to achieve the above object, a horizontal polarization signal is applied to a reflective substrate having a waveguide feeder configured to transmit a signal according to an embodiment of the present invention and a cavity substrate having a plurality of cavities arranged on an upper layer of the reflective substrate and an upper layer of the cavity substrate. The first charge substrate is provided with a first radiation circuit board having a first radiation circuit board and a plurality of radiation slots forming an M × N array in a subgroup of m × n arrays in an upper layer of the first feed circuit board to emit a horizontal polarization signal. A plurality of M ′ × N´ arrays in a subgroup of m ′ × n ′ arrays on a second feed circuit board for feeding a vertical polarization signal to the top layer of the first radiating substrate and a top layer of the second feed circuit board; A dielectric substrate is formed between the second radiation substrate and the respective radiation substrates provided with radiation slots to emit vertically polarized signals.

According to an embodiment of the present invention, the first feeder circuit board may include a single feeder supply unit for supplying a signal transmitted from the reflective substrate, and a feeder line forming a symmetrical tree structure around the feeder supply unit. At the end, a combination of H-shapes is formed in an A × B array, and comprises a first slot feed section feeding in phase to each of the subgroup spinning slots of the first radiating substrate.

According to an embodiment of the present invention, the second feeder circuit board may include a single feeder supplying unit for supplying a signal transmitted from the reflective substrate and a feeder line forming a symmetric tree structure around the feeder supplying unit. At the end, a combination of industrial shapes formed by rotating the first slot feed part by 90 ° is formed in an A ′ × B´ array so that the second slot feed feeds in phase to each of the subgroup spinning slots of the second radiating substrate. It consists of all.

According to an embodiment of the present invention, the first slot feeding part formed on the first feeding circuit board is formed at each of the plurality of radiating slot centers, and the plurality of radiating slots are respectively operated.

According to an embodiment of the present invention, the second slot feeder formed on the second feeder circuit board is formed in the center of the plurality of radiation slots, and the plurality of radiation slots operate as respective features.

According to another embodiment of the present invention, a reflective substrate on which a waveguide feeder for transmitting a signal is formed, a cavity substrate on which a plurality of cavities are arranged on an upper layer of the reflective substrate, and a first feed on a horizontal polarization signal are supplied to an upper layer of the cavity substrate. A first radiating substrate and a first radiating substrate are provided on the circuit board and the upper layer of the first feed circuit board to include a plurality of radiating slots forming an M × N array in a subgroup of m × n arrays. A second feeding circuit board for feeding a vertical polarization signal on an upper layer of the substrate and a plurality of radiation slots for forming an M ′ × N ′ array in a subgroup of an m ′ × n´ array on an upper layer of the second feeding circuit board. A second radiation substrate for emitting a vertical polarization signal, a power supply substrate formed on the upper layer of the second radiation substrate and a plurality of substrates except the power supply substrate The dielectric substrate is formed between each.

According to an embodiment of the present invention, the first feeder circuit board may include a single feeder supply unit for supplying a signal transmitted from the reflective substrate, and a feeder line forming a symmetrical tree structure around the feeder supply unit. At the end, the H-shaped combination is formed in an A × B array, and comprises a first slot feeding part feeding in phase to each of the subgroup spinning slots of the first radiating substrate.

According to another embodiment of the present invention, the second feeder circuit board includes a single feeder supply unit for supplying a signal transmitted from the reflective substrate and a feeder line forming a symmetrical tree structure around the feeder supply unit and the feeder line At the end of the second slot is formed in a combination of A '× B' in the form of an A '× B' arrangement formed by rotating the first slot feed portion and the 90-degree rotation to each of the sub-group radiating slots of the second radiating substrate Characterized in that the feed section.

According to another embodiment of the present invention, the first slot feeding part formed on the first feeding circuit board is formed in each of the plurality of radiating slot centers, and the plurality of radiating slots are operated as respective functions.

According to another embodiment of the present invention, the second slot feeder formed on the second feeder circuit board is formed in the center of the plurality of radiation slots, respectively, and the plurality of radiation slots may be operated by each.

According to another embodiment of the present invention, the power supply substrate corresponds to each of the power supply units formed on the first and second power supply circuit boards to reflect the power supply signal generated in the upper direction from the power supply unit in a downward direction. It is characterized by consisting of a cover for feeding.

According to the present invention, the first and second feeder circuit boards are fed to the first and second radiating substrates by respective polarizations to generate vertical and horizontal double polarized signals, and are formed on the first and second feeder circuit boards. The first and second slot feeders are fed to each of the centers of the radiation slots formed in plural numbers on the first and second radiating substrates, so that the plurality of radiation slots operate, respectively, to generate high gain antenna characteristics, The feed cover is formed on the dedicated substrate to reflect the feed signal generated upward in the waveguide feed portions of the first and second feed circuit boards in the downward direction, thereby minimizing the feed loss.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of a dual polarized satellite antenna according to an embodiment of the present invention, in which a plurality of cavities are formed on a reflective substrate 100 having a waveguide feeder 110 transmitting a signal and an upper layer of the reflective substrate 100. The first feeding circuit board 300 for feeding horizontal polarization signals to the cavity substrate 200 having the array 220 formed thereon and the upper layer of the cavity substrate 200 and the upper layer of the first feeding circuit board 300 m × A plurality of radiating slots 420 are formed in a subgroup 904 formed in an n array, where m and n are any natural numbers, forming an M × N array where M and N are any natural numbers. And a second feed circuit board 500 and a second feed circuit board 500 that feed a vertical polarization signal to an upper layer of the first radiation board 400 to emit a horizontal polarization signal. Subgroup 906 of an m´ × n´ array, where m´ and n´ are any natural numbers A second radiation substrate 600 and a plurality of radiation slots 620 for forming a vertically polarized signal, each having a plurality of radiation slots 620 that form a M ′ × N´ array (where M ′ and N ′ are arbitrary natural numbers). A dielectric substrate 800 is formed between the substrates.

More specifically, as shown in FIG. 2, the reflective substrate 100 uses a highly conductive metallic plate, and the reflective substrate 100 includes a low noise block down converter (LNB), which is horizontal in the center. A waveguide feeder 110 having a polarization feed waveguide 111 and a vertical polarization feed waveguide 112 is provided to transmit a signal by the waveguide feeder 110.

In particular, the horizontally polarized wave feeder waveguide 111 of the reflective substrate 100 transmits a signal to the feeder supply portion 311 formed on the first feeder circuit board 300, and the vertically polarized wave feeder waveguide 112 is formed of the first waveguide. By transmitting a signal to the feeder supply unit 512 formed on the two feeder circuit board 500, the first and second feeder circuit boards 300 and 500 are fed to each other so as to generate vertical and horizontal dual polarized signals.

The dielectric substrate 800 includes first, second, third, fourth, and fifth dielectric substrates 810, 820, 830, 840, and 850.

The first dielectric substrate 810 is formed of a material of air or foam between the reflective substrate 100 and the cavity substrate 200 to reduce the feed loss generated in the reflective substrate 100.

The second dielectric substrate 820 is formed of a material of air or foam between the cavity substrate 200 and the first feed circuit board 300, and the third dielectric substrate 830 is formed of the first feed circuit. It is formed of a material of air or foam between the substrate 300 and the first radiating substrate 400, the fourth dielectric substrate 840 is the first radiating substrate 400 and the second feed circuit board 500 In addition, the fifth dielectric substrate 850 may be formed of a material of air or foam between the second feeder circuit board 500 and the second radiating substrate 600. The second, third, fourth, and fifth dielectric substrates 820, 830, 840, and 850 operate in the same manner as the first dielectric substrate 810.

As shown in FIG. 3, the cavity substrate 200 includes a plurality of sub-groups 904 formed in an m × n array on the first and second radiating substrates 400 and 600 to form an M × N array. Cavity slots 420 and subgroups 906 formed on the second radiation substrate 600 in an m ′ × n´ array to correspond to a plurality of radiation slots 620 forming M ′ × N ′ arrays, respectively. By forming 220, not only the bandwidth of the antenna is increased but also the gain of the antenna is greatly increased.

In particular, as the depth of the cavity 220 formed in the cavity substrate 200 increases about 10% of the wavelength, the bandwidth of the antenna increases proportionally, and when the center frequency is set to 12 GHz of Ku-Band (11 Ghz to 14 GHz) Since λ is 25 mm, the depth of the cavity 220 is most preferably about 2.5 mm.

As illustrated in FIG. 4, the first feed circuit board 300 is symmetrical about a single feed supply unit 311 and the feed supply unit 311 that supply a signal transmitted from the reflective substrate 100. A feed line 314 forming a tree structure and a first H-shaped subgroup 903 are formed in an A × B array (where A and B are arbitrary natural numbers) at the end of the feed line 314. It consists of a slot feeder 313, the power supply supply unit 311 receives a signal transmitted from the horizontally polarized feed waveguides (111, 211), the power supply supply unit 311 is a H-shaped sub-group 903 The horizontal polarization signal is applied to the first slot feeder 313 formed in an x B arrangement.

The first radiating substrate 400 is formed on the upper layer of the first feeding circuit board 300, and as shown in FIG. 5, an M × N array is formed of a subgroup 904 formed in an m × n array. The plurality of radiating slots 420 are formed in the first feed circuit board 300 so as to correspond in one-to-one correspondence with the plurality of first slot feeders 313 having an H-shaped subgroup 903 formed in an A × B arrangement. A waveguide feeder 410 is formed at the center of the first radiation substrate 400.

In addition, the first radiating substrate 400 is matched with the first feeding circuit board 300 to remove the antenna efficiency decrease due to the leakage wave generated in the first feeding circuit board 300, and accurate antenna characteristics. Will generate a signal.

In particular, in particular, the first radiating substrate 400 and the first feeding circuit board 300 are subgroups 904 formed in an m × n arrangement on the first radiating substrate 400, as shown in FIG. 8. ) A plurality of radiating slots 420 forming an M × N array and a plurality of first slot feeding portions in which an H-shaped subgroup 903 is formed in an A × B array on the first feed circuit board 300. 313 is formed in a one-to-one correspondence, and the first slot feeder 313 is spaced apart from the center of the radial slot 420 to widen the distance between the plurality of first slot feeders 313. The input impedance between the plurality of radiation slots 420 is improved.

In addition, the feed line 314 having a tree structure formed on the first feed circuit board 300 symmetrically with respect to the feed supply unit 311 sets an equal distribution in which the signal strengths are the same, and is branched by dichotomy. The structure of the first slot feeder 313 is inverted in phase by 180 degrees, thereby basically compensating for the phase out of phase, thereby simplifying the feeding structure and forming the first radiating substrate 400. By operating each of the radiation slots 420, the performance of the antenna allows approximately two times the performance of the conventional two radiation slots to be maintained in one combination.

As shown in FIG. 6, the second feeder circuit board 500 receives a signal transmitted from the vertically polarized feed waveguides 112, 212, and 412 from the feeder supply unit 512, and the feeder supply unit 512. The first slot feeder 313 is rotated 90 degrees to apply a signal of vertical polarization to the second slot feeder 513 formed.

In addition, as shown in FIG. 7, the second radiation substrate 600 includes a plurality of radiation slots 620 that form an M ′ × N ′ array in a subgroup 906 formed in an m ′ × n ′ array. The second slot feeder 513 formed on the second feeder circuit board 500 may be formed in one-to-one correspondence, and a waveguide feeder 610 may be formed at the center of the second radiating substrate 600.

In addition, the second radiating substrate 600 is matched with the second feeder circuit board 500 to remove antenna efficiency decrease due to leakage waves generated in the second feeder circuit board 500, thereby reducing antenna characteristics. Accurately acquire and generate a signal.

In particular, as shown in FIG. 9, the second radiating substrate 600 and the second feeding circuit board 500 are a subgroup 906 formed in an m ′ × n ′ array in the second radiating substrate 600. A first slot feeding part in which a plurality of radiating slots 620 forming an M ′ × N´ array are formed on the second feeder circuit board 500 in which an H-shaped subgroup 903 is formed in an A × B arrangement. Each of the second slot feeder 513, in which an industrial sub-group 905 in which 313 is rotated 90 degrees, is formed in an A '× B' array (where A 'and B' are any natural numbers). And a plurality of slot feeders 513 formed on the second feed circuit board 500 to be spaced apart from the center of the inside of the radiation slot 620 formed on the second radiating substrate 600. The distance between the formed second slot feeders 513 is widened, and the input impedance between the plurality of radiation slots 620 is improved.

Furthermore, the feed line 514 formed on the second feed circuit board 500 symmetrically with respect to the feed supply unit 512 sets an equal distribution of signals having the same intensity, and forms a parallel feed structure branched by dichotomy. In addition, since the phase of the second slot feeder 513 is inverted by 180 ° to compensate for the phase being basically out of phase, the feeding structure is simplified and a plurality of radiations formed on the second radiating substrate 600 are provided. By operating each of the slots 620, the performance of the antenna allows approximately two times the performance of the conventional two radiation slots to be maintained in one combination.

In a preferred embodiment, m = n = 2 in the m × n array or m ′ × n´ array, M = N = 10 in the M × N array or M ′ × N ′ array, and A × Most preferably, A = B = 10 in the B array or A ′ × B ′ array.

10 is a configuration diagram of a dual polarized satellite antenna according to another embodiment of the present invention, in which a waveguide feeder 110 for transmitting a signal is formed on a reflective substrate 100 and a plurality of upper layers of the reflective substrate 100. On the first feeder circuit board 300 and the upper layer of the first feeder circuit board 300, which feed the horizontal polarization signal to the cavity substrate 200 having the cavity 220 arranged thereon and the upper layer of the cavity substrate 200. A first radiating substrate 400 and a first radiating substrate 400 having a plurality of radiating slots 420 forming an M × N array in a subgroup 904 formed in an m × n array to emit horizontally polarized signals. The second feed circuit board 500 that feeds the vertical polarization signal on the upper layer and the subgroup 906 formed in an m ′ × n´ array on the upper layer of the second feed circuit board 500 are M ′ × N´ A plurality of radiation slots 620 forming an array are provided to radiate vertically polarized signals. The dielectric substrate 800 is formed between the second radiation substrate 600, the power supply substrate 700 formed on the upper layer of the second radiation substrate 600, and a plurality of substrates except the power supply substrate 700. do.

More specifically, the power supply substrate 700 is further provided on the upper layer of the second radiation substrate 600 of the dual polarized satellite antenna of FIG. 1, as shown in FIG. 11. Power feed covers 711 and 712 are formed on the waveguide feeder 610 formed on the second radiating substrate 600, and each feed supply part formed on the first and second feeder circuit boards 300 and 500. Reflecting the signal generated in the upper direction in the lower direction at (311, 512) to minimize the power loss.

The present invention has been described in detail so far, but the embodiments mentioned in the process are only illustrative and are not intended to be limiting, and the present invention is provided by the following claims and the technical spirit and field of the present invention. Within the scope not departing from the scope of the present invention, changes in the components that can be coped evenly will fall within the scope of the present invention.

1 is a block diagram of a dual polarized satellite antenna according to an embodiment of the present invention

2 is a detail view of a reflective substrate according to FIG. 1 of the present invention;

3 is a detail view of a cavity substrate according to FIG. 1 of the present invention;

4 is a detailed view of a first feed circuit board according to FIG. 1 of the present invention;

5 is a detail view of a first radiating substrate according to FIG. 1 of the present invention;

6 is a detailed view of a second feeder circuit board according to FIG. 1 of the present invention.

7 is a detail view of a second radiating substrate according to FIG. 1 of the present invention.

FIG. 8 is a perspective view of a first radiation substrate and a first feed circuit board overlapped with each other according to FIG. 1 of the present invention.

FIG. 9 is a perspective view of a second radiation substrate and a second feed circuit board overlapped with each other according to FIG. 1 of the present invention.

10 is a configuration diagram of a dual polarized satellite antenna according to another embodiment of the present invention

11 is a signal flow diagram of a lid for feeding formed on the feeding substrate according to FIG. 10 of the present invention;

* Description of the main drawing codes *

100: reflective substrates 110, 210, 410, 610: waveguide feeder

111, 211, 411, 611: horizontally polarized feed waveguide

112, 212, 412, 612: vertically polarized feed waveguide

200: cavity substrate 220: cavity

300: first feed circuit board 311, 512: feed supply unit

313: first slot feed part 400: first radiation substrate

420, 620: Radiation slots 314, 514: Feed line

500: second feed circuit board 513: second slot feed section

600: second radiation substrate 700: power supply substrate

711, 712 feeding cover 800 dielectric substrate

810: first dielectric substrate 820: second dielectric substrate

830: third dielectric substrate 840: fourth dielectric substrate

850: fifth dielectric substrate 903, 904, 905, 906: subgroup

Claims (11)

A reflective substrate 100 on which a waveguide feeder 110 for transmitting a signal is formed; A cavity substrate 200 having a plurality of cavities 220 arranged on an upper layer of the reflective substrate 100; A first feed circuit board 300 for feeding a horizontal polarization signal to an upper layer of the cavity substrate 200; A subgroup 904 formed in an m × n array (where m and n are any natural numbers) on the top layer of the first feeder circuit board 300, where M × N arrays are any natural A first radiation substrate 400 provided with a plurality of radiation slots 420 to emit horizontally polarized signals; A second feed circuit board 500 for feeding a vertical polarization signal to an upper layer of the first radiating substrate 400; The M '× N' array (where M ', n' is an arbitrary natural number) formed in the upper layer of the second feeder circuit board 500, where m 'and n' are arbitrary natural numbers, where M A second radiation substrate 600 provided with a plurality of radiation slots 620 forming ′, N ′ is an arbitrary natural number to emit vertically polarized signals; And A dual polarized satellite antenna, characterized in that the dielectric substrate (810, 820, 830, 840, 850) is formed between each substrate. A reflective substrate 100 on which a waveguide feeder 110 for transmitting a signal is formed; A cavity substrate 200 having a plurality of cavities 220 arranged on an upper layer of the reflective substrate 100; A first feed circuit board 300 for feeding a horizontal polarization signal to an upper layer of the cavity substrate 200; A subgroup 904 formed in an m × n array (where m and n are any natural numbers) on the top layer of the first feeder circuit board 300, where M × N arrays are any natural A first radiation substrate 400 provided with a plurality of radiation slots 420 to emit horizontally polarized signals; A second feed circuit board 500 for feeding a vertical polarization signal to an upper layer of the first radiating substrate 400; The M '× N' array (where M ', n' is an arbitrary natural number) formed in the upper layer of the second feeder circuit board 500, where m 'and n' are arbitrary natural numbers, where M A second radiation substrate 600 provided with a plurality of radiation slots 620 forming ′, N ′ is an arbitrary natural number to emit vertically polarized signals; And A dielectric substrate (810, 820, 830, 840, 850) between each of the substrates; The first feed circuit board 300 includes a single feed supply unit 311 for supplying a signal transmitted from the reflective substrate 100, and a feed line forming a symmetric tree structure around the feed supply unit 311. At the end of the furnace 314 and the feed line 314, an H-shaped subgroup 903 is formed in an A × B array (where A and B are arbitrary natural numbers) to form the first radiating substrate 400. Dual-polarized satellite antenna, characterized in that it consists of a first slot feeding portion (313) to feed in phase to each of the sub-slots (904) of the radiating slot (420). The method of claim 2, wherein the second feed circuit board 500, A single feeder 512 for supplying a signal transmitted from the reflective substrate 100, a feeder line 514 forming a symmetrical tree structure around the feeder 512, and the feeder line 514 ) Is an A '× B' array (where A 'and B' are any natural numbers) in an industrial subgroup 905 formed by rotating the first slot feed part 313 by 90 °. And a second slot feeding part (513) which is formed to feed in phase to each of the subgroups (906) of the second radiating substrate (600) and the radiating slots (620) of the second radiating substrate (600). 3. The center of the plurality of radiation slots 420 formed in the first radiating substrate 400 subgroup 904 of claim 1, wherein the first slot feeding portion 313 formed in the first feeding circuit board 300 is formed. And a dual polarized satellite antenna respectively formed at each of the plurality of radiating slots 420 formed in the first radiating substrate 400 subgroup 904 respectively. The center of the plurality of radiation slots 620 formed in the sub-group 906 of the second radiating substrate 600 is the second slot feeding portion 513 formed on the second feed circuit board 500. And a dual polarized satellite antenna respectively formed at each of the plurality of radiation slots 620 formed in the second radiating substrate 600 subgroup 906. A reflective substrate 100 on which a waveguide feeder 110 for transmitting a signal is formed; A cavity substrate 200 having a plurality of cavities 220 arranged on an upper layer of the reflective substrate 100; A first feed circuit board 300 for feeding a horizontal polarization signal to an upper layer of the cavity substrate 200; A subgroup 904 formed in an m × n array (where m and n are any natural numbers) on the top layer of the first feeder circuit board 300, where M × N arrays are any natural A first radiation substrate 400 provided with a plurality of radiation slots 420 to emit horizontally polarized signals; A second feed circuit board 500 for feeding a vertical polarization signal to an upper layer of the first radiating substrate 400; The M '× N' array (where M ', n' is an arbitrary natural number) formed in the upper layer of the second feeder circuit board 500, where m 'and n' are arbitrary natural numbers, where M A second radiation substrate 600 provided with a plurality of radiation slots 620 for forming 'N', where N 'is an arbitrary natural number and emitting vertically polarized signals; A power feeding substrate 700 formed on an upper layer of the second radiation substrate 600; And A dual polarized satellite antenna, characterized in that a dielectric substrate (810, 820, 830, 840, 850) is formed between a plurality of substrates except the power feeding substrate (700). A reflective substrate 100 on which a waveguide feeder 110 for transmitting a signal is formed; A cavity substrate 200 having a plurality of cavities 220 arranged on an upper layer of the reflective substrate 100; A first feed circuit board 300 for feeding a horizontal polarization signal to an upper layer of the cavity substrate 200; A subgroup 904 formed in an m × n array (where m and n are any natural numbers) on the top layer of the first feeder circuit board 300, where M × N arrays are any natural A first radiation substrate 400 provided with a plurality of radiation slots 420 to emit horizontally polarized signals; A second feed circuit board 500 for feeding a vertical polarization signal to an upper layer of the first radiating substrate 400; The M '× N' array (where M ', n' is an arbitrary natural number) formed in the upper layer of the second feeder circuit board 500, where m 'and n' are arbitrary natural numbers, where M A second radiation substrate 600 provided with a plurality of radiation slots 620 for forming 'N', where N 'is an arbitrary natural number and emitting vertically polarized signals; A power feeding substrate 700 formed on an upper layer of the second radiation substrate 600; And Dielectric substrates 810, 820, 830, 840, and 850 are formed between the plurality of substrates except for the power feeding substrate 700; The first feed circuit board 300 includes a single feed supply unit 311 for supplying a signal transmitted from the reflective substrate 100, and a feed line forming a symmetric tree structure around the feed supply unit 311. At the end of the furnace 314 and the feed line 314, an H-shaped subgroup 903 is formed in an A × B array (where A and B are arbitrary natural numbers) to form the first radiating substrate 400. Dual-polarized satellite antenna, characterized in that it consists of a first slot feeding portion (313) to feed in phase to each of the sub-slots (904) of the radiating slot (420). The method of claim 7, wherein the second feed circuit board 500, A single feeder 512 for supplying a signal transmitted from the reflective substrate 100, a feeder line 514 forming a symmetrical tree structure around the feeder 512, and the feeder line 514 ) Is an A '× B' array (where A 'and B' are any natural numbers) in an industrial subgroup 905 formed by rotating the first slot feed part 313 by 90 °. And a second slot feeding part (513) which is formed to feed in phase to each of the subgroups (906) of the second radiating substrate (600) and the radiating slots (620). The center of the plurality of radiating slots 420 formed in the sub-group 904 of the first radiating substrate 400 is the first slot feeding part 313 formed in the first feeding circuit board 300. And a dual polarized satellite antenna respectively formed at each of the plurality of radiating slots 420 formed in the first radiating substrate 400 subgroup 904 respectively. The center of the plurality of radiating slots 620 formed in the sub-group 906 of the second radiating substrate 600 is the second slot feeding part 513 formed on the second feed circuit board 500. And a dual polarized satellite antenna respectively formed at each of the plurality of radiation slots 620 formed in the second radiating substrate 600 subgroup 906. The power supply board 311 according to claim 6 or 7, wherein the power supply board 700 corresponds to a power supply supply unit 311 and 512 formed on the first and second power supply circuit boards 300 and 500, respectively. , 512, the dual polarized satellite antenna, characterized in that made of a cover for feeding (711, 712) for reflecting the feed signal generated in the upper direction in the lower direction.

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