KR100710708B1 - Multilayer slot array antenna - Google Patents

Abstract

According to the present invention, first, second, third, and fourth feed parts are formed in a waveguide feeder for feeding and transmitting a signal, and a first dielectric formed in a stack on an upper layer of the waveguide and an upper layer of the first dielectric. A slot radiation formed by stacking a feed line part for feeding signals and a second dielectric formed in a stack on an upper layer of the feed line part, and corresponding to the first, second, and third feed parts of the feed line part in an upper layer of the second dielectric. And an upper portion of the slot copying unit and a cover portion for feeding that is formed to correspond to the fourth feeding unit, respectively.

Therefore, the present invention reduces the size and weight of the antenna as well as the cost because the double polarized wave is generated in a single plane by matching the feeding position of the feed line portion and the slot copy portion, and the feed line portion is one-to-one correspondence to each signal. The power supply to the antenna has an effect of increasing the antenna efficiency and the problem of the feed loss and the antenna gain loss of the feed line.

 Dielectric, Feed, Match, Polarization, Slot, Grating, Hybrid, Waveguide, Radiation

Description

 Multilayer slot array antenna

1 is a block diagram of a stacked slot array antenna according to an embodiment of the present invention

2 is a detailed view showing the waveguide feeder according to FIG. 1 of the present invention;

3 is a perspective view illustrating a waveguide signal feeder of a 90 kHz hybrid method according to FIG. 1 of the present invention;

4 is a detailed view showing a feeder line part according to FIG. 1 of the present invention;

5 is a perspective view showing the matching of the feed line unit and the slot copying unit according to FIG. 1 of the present invention;

6 is a detailed view showing a grid of the slot copying unit according to FIG. 1 of the present invention;

7 is a configuration diagram of a stacked slot array antenna according to another embodiment of the present invention.

* Description of the main drawing codes *

100: waveguide feeder 110: signal feeder

111: first signal feed line 112: second signal feed line

120: reflector 121: feed slot

200: first dielectric 300: feed line portion

310: first feeder 320: second feeder

330: third feeder 340: fourth feeder

341: vertical, left turn polarized feeder

341-1: vertical, left turn polarization feed element

342: horizontal, right turn polarized feeder

342-1: Horizontal, right-turn polarized feeder

400: second dielectric 500: slot copy unit

510: copy slot 520: grid

600: cover part for feeding

The present invention relates to a stacked slot array antenna, and more particularly, to a stacked slot array antenna for transmitting and receiving dual polarized waves, having a gain and a frequency bandwidth of an antenna, having high gain and broadband characteristics.

As a technology of a conventional waveguide slot array planar antenna, Korean Laid-Open Patent Publication No. 2001-0054058 relates to a waveguide slot array planar antenna, and a signal to be transmitted to a lower surface of the antenna to minimize size while achieving high gain of the antenna. A waveguide feeder is formed to receive the signal, and an upper surface of the waveguide feeder has substantially the same shape as the first feed waveguide for guiding and distributing the signal input through the waveguide feeder, and guides and distributes the signal input through the waveguide feedline. A second feed waveguide is formed, and a radiation plate member having a plurality of radiation grooves for radiating the distributed signal is formed on the upper surface thereof, and a plurality of slots mounted on the radiation plate member to be stacked and guide the distributed signal to the outside. It was a technique including the formed slot plate member.

However, the conventional technique is a waveguide slot array planar antenna, which is limited to a single polarized wave, and in the case of implementing a dual polarized antenna, it is formed as a plurality of stacked structures to distinguish each signal of a feeder. The plurality of stacked antennas have a problem in that a circuit is complicated, the efficiency of the antenna is lowered, and the size, weight, and cost of the antenna are increased.

Another problem is that a plurality of radiator feeds formed on the radiating plate are fed from a single feed portion formed at the center of the radiating plate, causing a feeding loss according to the feeding line, and lowering the gain of the antenna.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to generate a double polarized wave in a single plane by matching the feeding position of the feed line portion and the slot copying portion, thereby reducing the size, weight, and cost of the antenna. The purpose is to save.

 Another purpose is to solve the problem of increase of antenna efficiency, feed loss of feed line, and antenna gain loss by feeding the feed line part to each signal in one-to-one correspondence.

In order to achieve the above object, a stacked slot array antenna according to an embodiment of the present invention may include a waveguide feeding unit for feeding and transmitting a signal and a first dielectric formed in a stack on an upper layer of the waveguide and a first layer on an upper layer of the first dielectric. And a second, third, and fourth feeder part configured to feed a double polarized signal to each of the feeder line part and the second dielectric formed in a stack on the upper layer of the feeder line part, and the feeder line part in the upper layer of the second dielectric. And slot copying portions formed to correspond to the first, second, and third feeding portions, respectively.

According to an embodiment of the present invention, the slot copying unit may further include a circular or rectangular grid divided into four predetermined regions within the radiation slot.

According to an embodiment of the present invention, a lower surface of the waveguide feeder includes a signal feeder configured to feed a signal and an upper surface of the waveguide feeder formed of a reflector plate having a feed slot configured to feed a signal from the signal feeder to an upper layer. It is characterized by.

According to an embodiment of the present invention, the power supply of the waveguide feeder is characterized in that the parallel feeding method.

According to an embodiment of the present invention, the waveguide feed unit is characterized in that the 90 ° hybrid feed method for converting the signal.

According to an embodiment of the present invention, the fourth feeder of the feeder line part is characterized in that the one-to-one correspondence feeding method to the first, second and third feeders according to respective polarizations.

According to an embodiment of the present invention, the fourth feeder of the feeder line part is characterized in that each of the polarizations formed in the slot radiator feeds out of phase with each other.

According to an embodiment of the present invention, the first, second and third feed parts of the feed line part are characterized in that they have a symmetrical structure.

According to an embodiment of the present invention, the slot copying unit is characterized in that a plurality of polarizations are formed by the shape of the radiation slot and the feeding positions of the first, second, and third feeding units formed on the feed line unit.

According to an embodiment of the present invention, the slots of the copying unit are characterized in that a plurality of array shapes.

According to another embodiment of the present invention, a waveguide feeder for feeding and transmitting a signal and a first dielectric formed of a laminate on an upper layer of the waveguide and an upper layer of the first dielectric and a first, second, third and fourth feed An additionally formed feed line part for feeding a signal of a double polarized wave, a second dielectric formed in a stack on an upper layer of the feed line part, and first, second and third feed parts of the feed line part in an upper layer of the second dielectric; Each of the slot copying portion formed to correspond to each other and the upper surface of the slot copying portion is characterized in that it consists of a feed portion cover portion formed to correspond to the fourth feed portion of the feed line portion.

According to another exemplary embodiment of the present invention, the slot copying unit may further include a circular or quadrangle grid divided into four predetermined regions within the radiation slot.

According to another embodiment of the present invention, a lower surface of the waveguide feeder includes a signal feeding part for feeding a signal and an upper surface of the waveguide feeding part with a feeding slot for feeding a signal from the signal feeding part to an upper layer. Characterized in that made.

According to another embodiment of the present invention, the power supply of the waveguide feeder is characterized in that the parallel feeding method.

According to another embodiment of the present invention, the waveguide feed unit is characterized in that the 90 ° hybrid feed method for converting the signal.

According to another embodiment of the present invention, the fourth feeding part of the feed line part is characterized in that the one-to-one corresponding feeding method to the first, second and third feeding part according to each polarization.

According to another embodiment of the present invention, the fourth feeder of the feeder line part is characterized in that each of the polarizations formed in the slot radiator feeds out of phase with each other.

According to another embodiment of the present invention, the first, second and third feed parts of the feed line part are characterized in that the symmetrical structure.

According to another embodiment of the present invention, the slot copying unit is characterized in that a plurality of polarizations are formed by the shape of the radiation slot and the feeding positions of the first, second, and third feeding units formed on the feed line unit.

According to another embodiment of the present invention, the slots of the copying unit are characterized in that they have a plurality of array shapes.

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 stacked slot array antenna according to an embodiment of the present invention, wherein the stacked slot array antenna is stacked on a waveguide feed unit 100 and a top layer of the waveguide feed unit 100 to feed and transmit a signal. The first dielectric 200 and the upper layer of the first dielectric 200 formed of the first 310, the second 320, the third 330 and the fourth feed portion 340 is formed of a double polarization The feed line part 300, which feeds signals to each other, and the second dielectric 400 formed in a stack on an upper layer of the feed line part 300, and the feed line part 300 in an upper layer of the second dielectric 400. The slot 310 is formed to correspond to the first 310, the second 320 and the third 330 of the feeding portion of each.

In more detail, as shown in FIG. 2, the waveguide feeder 100 uses a metallic plate with high conductivity and a signal feeder 110 and the signal feeder that feed the transmitted and received signals in a parallel feed manner. Since the reflector plate 120 having the feeding slot 121 for feeding signals on the upper surface of the 110 is integrally formed, the loss and structural weight of the feeding line are reduced, and the size of the antenna is expanded as necessary. Not only can it be used, it transmits high frequency signal with high efficiency.

Since the signal feeder 110 is integrally formed with the reflector 120 on the lower surface of the reflector 120, it simplifies the structure and the first 310 of the feeder line part 300. , Linear polarization (vertical polarization, horizontal polarization) or circular polarization (left rotation) generated by the feeding positions of the two (320) and three feeding portions (330) and the shape of the radiation slot (510) formed in the slot copying portion (500). The polarization ((vertical polarization, horizontal polarization), (left polarization, right rotation polarization) feeding of each signal in polarization, right turn polarization) and elliptical polarization (left turn polarization, right turn polarization) is performed at the signal feeder 110, respectively. The signal is fed in a parallel feeding manner, and each signal is transmitted through the feeding slot 121.

Accordingly, the vertical and the left rotation polarization feeding according to the respective signals are fed in a parallel feeding manner through the first signal feed line 111, and the horizontal and the right rotation polarization feeding are fed in parallel through the second signal feeding line 112. Is fed in a manner, and the feed of the parallel feed method of each signal is symmetrically formed in the signal feed unit 110 and is fed.

In particular, the signal feeding unit 110 is a feeding slot of the first 310, the second 320 and the third feeding unit 330 of the feed line unit 300 and the radiation slot formed in the slot copying unit 500 Each signal (advanced polarization, circular polarization, and elliptical polarization) is generated according to the shape of 510, and double polarization ((vertical polarization, horizontal polarization), (left polarization, right rotating polarization) of each generated signal is generated. Power is fed in a parallel feed system symmetrical with each other by the feed line of each polarization, and each polarization of the symmetrical double polarization is synthesized in one feed line and fed.

In addition, the signal feed unit 110 is the feed position of the first 310, 2 320 and the third feed unit 330 formed in the feed line unit 300 as shown in Figure 3 and the slot copy Each of the signals of the linear polarization, circular polarization and elliptical polarization generated by the shape of the radiation slot 510 formed in the unit 500 is converted and outputted using the 90 ° hybrid method.

Therefore, the 90 ° hybrid power feeding converts a signal from linear polarization to circular polarization or elliptical polarization, linear polarization to linear polarization or elliptical polarization, and elliptical polarization to linear polarization or circular polarization.

Since the reflector plate 120 is integrally formed with the signal feeder 110 on the upper surface of the signal feeder 110, the structure of the reflector 120 is simplified, a highly conductive metallic plate is used, and the reflector plate ( Through the 16 feed slots 121 arranged horizontally in the center of 120, the dual polarized signal is fed to each.

The first dielectric 200 forms a coupling generated from the waveguide feed part 100 and the feed line part 300, and is formed on the signal feed part 110 and the feed line part 300. In order to reduce the feed loss of the four feed section 340, it is preferable that the material is made of air or foam and size of λ / 10.

As shown in FIG. 4, the feed line part 300 includes the first 310, the second 320, and the third feed 330 having 17 rows (i) x 14 columns (j). Are symmetrical to each other and are fed from the antenna.

The first feed part 310 is formed in a vertical type, the second feed part 320 is formed in a horizontal type, and the third feed part 330 is formed in a cross shape, so that each polarization of each of the double polarized waves is 2 The vertically integrated left and right rotating polarization feeding elements 341-1 are thermally fed from the vertical and left rotating polarization feeding unit 341, and the horizontal and right rotating polarization feeding elements 342-1 are fed from the horizontal and right rotating polarization feeding unit 342. The power supply line unit 300 feeds the dual polarized wave in reverse phase to each other to prevent the power supply from overlapping or crossing each other.

The first feed section 310 uses a vertical polarization or left turn polarization, the second feed section 320 uses a horizontal polarization or a right turn polarization, the third feed section 330 is a vertical, horizontal polarization or left turn, Use all right turn polarizations.

The fourth feeder 340 has a vertical and left rotating polarization feeding unit 341 for feeding eight vertical or left rotating polarizations, and a horizontal and right rotating polarization feeding unit 342 for feeding eight horizontal or right rotating polarizations vertically and leftwards. The shapes of the polarization feeder 341 and the horizontal and right-turning polarization feeder 342 are sequentially formed and fed.

Furthermore, the feed line part 300 has a structure in which power is supplied to each of the first 310, the second 320 and the third feed part 330, so that the feed loss of the fourth feed part 340 is reduced. And improve the antenna efficiency, according to the feed position of the first 310, 2 320 and 3 feed unit 330, linear polarization (horizontal polarization, vertical polarization) and circular polarization (left rotation polarization, right rotation polarization) and Elliptical polarization (left rotating polarization, right rotating polarization) is generated, and linear polarization (horizontal polarization, vertical polarization) and circular polarization (left polarization, right rotating polarization) also by the shape of the radiation slot 510 formed in the slot copying unit 500. And elliptical polarization (left turn polarization, right turn polarization) is generated.

In addition, the feed line unit 300 is used as the material of the Teflon, FR4 and film, it is preferable to use a film substrate of 0.02mm or less when using the KU band (12GHz).

In particular, since the feed line unit 300 is matched with the slot copying unit 500 to generate a double polarized wave in a single plane, it not only reduces the structural weight and size of the antenna, but also reduces the cost, and feeds each of the double polarized waves. In order to prevent them from overlapping or crossing each other, the respective polarizations feed each other out of phase.

The second dielectric 400 forms a coupling generated from the feed line part 300 and the slot copying part 500, and feed loss of the fourth feed part 340 of the feed line part 300. It is preferable that the feed line part 300 and the slot copying part 500 are made of a material of air or foam and a size of λ / 10 so as to be spaced apart at predetermined intervals.

As illustrated in FIG. 5, the slot copy unit 500 has a radiation slot arranged to correspond to the first 310, second 320, and third feed units 330 of the feed line unit 300, respectively. 510 is formed, and the radiation slot 510 is matched with the first 310, the second 320 and the third feeder 330, and the leakage wave generated in the feed line of the feeder line part 300. The antenna efficiency is reduced and the antenna characteristics are accurately obtained and transmitted and received with each polarization.

In addition, the slot copying unit 500 is further divided into four predetermined regions within the radiation slot 510, as shown in Figure 6, further provided with a grating 520 formed of a circular or rectangular conductive element Thus, the gain and frequency bandwidth of the antenna are extended, and the characteristics of the broadband and high gain are achieved.

7 is a configuration diagram of a stacked slot array antenna according to another embodiment of the present invention, wherein the stacked slot array antenna has a waveguide feed unit 100 and a top layer of the waveguide feed unit 100 for feeding and transmitting a signal. The first dielectric 200 formed in the stack and the upper layer of the first dielectric 200 are formed with the first 310, the second 320, the third 330, and the fourth feed part 340, thereby providing a double polarization. The feed line unit 300 and the feed line unit 300 in the upper layer of the second dielectric 400 and the second dielectric layer 400 formed in a stack on the upper layer of the feed line unit 300 for feeding each signal of The fourth feeding part 340 on the upper surface of the slot copying part 500 and the slot copying part 500 formed to correspond to the first 310, the second 320, and the third feeding part 330, respectively. ) Is made of a cover portion 600 for power supply respectively formed.

In more detail, as the cover 600 for the feeder is further provided on the upper surface of FIG. 1, the fourth feeder 340 and the cover for each feeder formed in the feeder line part 300 are provided. Since the 600 is formed to correspond to each other, the feeding loss of the fourth feeding part 340 is reduced and the characteristics of the antenna are kept constant.

The cover 600 for the feeder is fed back to the signal generated in the upper side of the signal fed to the upper side and the lower side in the fourth feeder 340 (composite) and transmitted to the signal generated downward.

Since the transmitted signal is transmitted and output from the feed slot 121 formed in the reflector plate 120 of the waveguide feed part 100 to the signal feed part 110, the feed loss of the fourth feed part 340 is reduced. The antenna characteristic is kept constant.

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 to the extent that they can be dealt with evenly will fall within the scope of the present invention.

 As described above, since the present invention generates a double polarized wave in a single plane by matching the feeding position of the feeding line portion and the slot copying portion, the size and weight of the antenna are reduced as well as the cost, and the feeding of the feeding line portion is By feeding the signal in a one-to-one correspondence manner, there is an effect of increasing the antenna efficiency, the feed loss of the feed line, and the antenna gain loss.

Claims (20)

A waveguide feeder configured to feed and transmit a signal; A first dielectric formed in a stack on an upper layer of the waveguide; A feed line unit having first, second, third and fourth feed units formed on an upper layer of the first dielectric to feed a signal of a dual polarization, respectively; A second dielectric formed in a stack on an upper layer of the feed line part; And Stacked slot array antenna, characterized in that the upper layer of the second dielectric consisting of a slot radiating portion formed to correspond to the first, second and third feed portion of the feed line portion. The stacked slot array antenna of claim 1, wherein the slot radiator further comprises a circular or rectangular grid divided into four predetermined regions within the radiation slot. The signal feeding part of claim 1 or 2, further comprising: a signal feeding part feeding a signal to a lower surface of the waveguide feeding part; Stacked slot array antenna, characterized in that the upper surface of the waveguide feed portion is formed of a reflecting plate formed with a feed slot for feeding a signal from the signal feed portion to the upper layer. The multilayer slot array antenna according to claim 1 or 2, wherein the power supply of the waveguide feed part is a parallel power feeding method. 5. The stacked slot array antenna of claim 4, wherein the waveguide feed part is a 90 ° hybrid feed method for converting a signal. The stacked slot array antenna according to claim 1 or 2, wherein the fourth feeding portion of the feed line portion is a one-to-one correspondence feeding method to the first, second, and third feeding portions according to each polarization. 7. The stacked slot array antenna of claim 6, wherein the fourth feeder of the feeder line part feeds each polarized wave formed in the slot radiator out of phase with each other. 8. The stacked slot arrangement antenna of claim 7, wherein the first, second, and third feed portions of the feed line portion have a symmetrical structure. The method of claim 1 or claim 2, wherein the slot radiator is characterized in that a plurality of polarizations are formed by the shape of the radiation slot and the feeding position of the first, second and third feed section formed in the feed line portion. Stacked slot array antenna. 10. The stacked slot array antenna of claim 9, wherein the slots of the slot radiator have a plurality of array shapes. A waveguide feeder configured to feed and transmit a signal; A first dielectric formed in a stack on an upper layer of the waveguide; A feed line part configured to form first, second, third, and fourth feed parts on the upper layer of the first dielectric to feed a signal of a double polarization; A second dielectric formed in a stack on an upper layer of the feed line part; A slot radiator formed on the upper layer of the second dielectric to correspond to the first, second and third feed sections of the feed line section, respectively; And Stacked slot array antenna, characterized in that consisting of a cover portion for feeding formed on the upper surface of the slot radiating portion corresponding to the fourth feed portion of the feed line portion. 12. The stacked slot array antenna of claim 11, wherein the slot radiator further comprises a circular or quadrangle grid divided into four predetermined regions within the radiation slot. 13. The apparatus of claim 11 or 12, further comprising: a signal feeder configured to feed a signal to a lower surface of the waveguide feeder; Stacked slot array antenna, characterized in that the upper surface of the waveguide feeding portion is formed of a reflecting plate formed with a feeding slot for feeding a signal from the signal feeding portion to the upper layer. 13. The stacked slot array antenna according to claim 11 or 12, wherein the power supply of the waveguide feed part is a parallel feed method. 15. The stacked slot array antenna of claim 14, wherein the waveguide feed part is a 90 ° hybrid feed method for converting a signal. 13. The stacked slot array antenna according to claim 11 or 12, wherein the fourth feeding part of the feed line part is a one-to-one correspondence feeding method to the first, second and third feeding parts according to each polarization. 17. The stacked slot array antenna of claim 16, wherein the fourth feeder of the feeder line part feeds each polarized wave formed in the slot radiator out of phase with each other. 18. The stacked slot arrangement antenna of claim 17, wherein the first, second, and third feed portions of the feed line portion have a symmetrical structure. The method of claim 11 or 12, wherein the slot copying portion is characterized in that a plurality of polarizations are formed by the shape of the radiation slot and the feeding position of the first, second and third feed portion formed in the feed line portion. Stacked slot array antenna. 20. The stacked slot arrangement antenna of claim 19, wherein the slots of the slot radiator have a plurality of array shapes.

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