KR102239268B1 - Dual-polarized antenna, antenna system comprising the same and operating method thereof - Google Patents

Abstract

A dual-polarized antenna according to an embodiment of the present invention includes a plurality of antenna unit cells. Each of the plurality of antenna unit cells includes: first to third insulating films which are sequentially stacked; a first metal film disposed on a lower surface of the first insulating film; a second metal film disposed between the first insulating film and the second insulating film; a third metal film disposed between the second insulating film and the third insulating film; a fourth metal film disposed on an upper surface of the third insulating film; a fifth metal film disposed on an upper surface of the third insulating film to be spaced apart from the fourth metal film; a sixth metal film disposed through the central region of the first to third insulating films; first and second pin diodes disposed on the upper surface of the third insulating film and disposed between the fourth metal film and the sixth metal film to have a phase of 90°; and first and second capacitors disposed on the upper surface of the third insulating layer and disposed between the fourth metal layer and the sixth metal layer to face the first and second pin diodes, respectively. Therefore, the structure of the antenna system can be simplified.

Description

Dual polarized antenna, antenna system including the same, and operation method thereof {DUAL-POLARIZED ANTENNA, ANTENNA SYSTEM COMPRISING THE SAME AND OPERATING METHOD THEREOF}

The present invention relates to a dual polarized antenna, an antenna system including the same, and a method of operating the same, in particular, a dual polarized antenna for converting a linear incident wave to a polarization through a control circuit of an antenna part, an antenna system including the same, and an operating method thereof. About. That is, the present invention relates to a dual polarized antenna for controlling an incident linear polarized wave to select a horizontal linear polarized wave or a vertical linear polarized wave in an antenna control circuit, an antenna system including the same, and an operating method thereof.

In fields related to signal transmission and reception, such as radar and wireless communication, an antenna and an antenna system are essentially required configurations. For example, an antenna system (or radar system) in the field of radar is a device that emits electromagnetic waves and receives an echo of an electromagnetic wave reflected from the surface of a target object, such as a transmitter, a receiver, an antenna, a display, and a controller. And the like, and as an antenna, a directional dish antenna, an array radiation element of a phased array antenna, and the like are used.

The dish antenna emits and receives electromagnetic waves while changing the orientation direction by a mechanical rotation method, and the phase array antenna emits and receives electromagnetic waves while changing the orientation direction by controlling the phases of the transmitter and the receiver.

In recent years, the necessity of simultaneously tracking a plurality of target objects moving at high speed has been greatly increased. Dish antennas must rotate rapidly mechanically in order to detect targets moving at high speeds, and there is a limit to detecting multiple targets.

On the other hand, since the phased array antenna can change the electronic beam steering angle, multiple target objects can be tracked at the same time, and the use of the phased array antenna is greatly increasing.

Since there is a difference between the information collected by the horizontal polarization and the information collected by the vertical polarization, the radar system acquires information by transmitting and receiving double polarization in order to obtain accurate information. To this end, the radar system includes a transmission unit, a horizontal polarization antenna, a vertical polarization antenna, a horizontal polarization reception unit, and a vertical polarization reception unit.

As described above, since an antenna system such as a radar system includes two antennas (horizontal polarization antenna, vertical polarization antenna) and two receiving units (horizontal polarization receiving unit, vertical polarization receiving unit) to obtain information through double polarization, the antenna system The structure of the antenna is complicated, the volume of the antenna system is increased, and the cost required for manufacturing the antenna system is increased. Therefore, research on an antenna system capable of transmitting and receiving double polarized waves using one antenna and one receiver is required.

Accordingly, the present invention is to satisfy the above-described requirements, and an antenna system including a double polarized wave and a double polarized antenna configured to selectively transmit/receive and control horizontal polarization and vertical polarization through one antenna, and an operating method thereof. It aims to provide. That is, an object of the present invention is to provide a dual polarized antenna for controlling an incident linear polarized wave to select a horizontal linear polarized wave or a vertical linear polarized wave in an antenna control circuit, an antenna system including the same, and an operating method thereof.

The problem of the present invention is not limited to those mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

A dual polarization antenna according to an embodiment of the present invention for achieving the above object includes a plurality of antenna unit cells, and each of the plurality of antenna unit cells is sequentially stacked first to third insulating layers and a first insulating layer. The first metal film disposed on the lower surface of the, the second metal film disposed between the first insulating film and the second insulating film, the third metal film disposed between the second insulating film and the third insulating film, and disposed on the upper surface of the third insulating film. On the upper surface of the fourth metal film, the fifth metal film disposed to be spaced apart from the fourth metal film on the upper surface of the third insulating film, the sixth metal film disposed through the central region of the first to third insulating films, and the third insulating film. And the first and second pin diodes disposed between the fourth metal film and the sixth metal film to have a 90° phase, and disposed on the upper surface of the third insulating film, and facing each of the first and second pin diodes The first and second capacitors may be disposed between the fourth and sixth metal layers so as to be performed.

According to an embodiment of the present invention, a plurality of antenna unit cells may be arranged in an M×N array.

According to an embodiment of the present invention, the first metal film serves as a receiving end for receiving a received signal, the second metal film is grounded, the third metal film is connected to the fourth metal film and the fifth metal film, and the fourth metal film is The film serves as a transmitter for transmitting a transmission signal, the fifth metal film is supplied with a forward bias voltage, and the sixth metal film is supplied with a current corresponding to the transmission signal.

According to an embodiment of the present invention, the first and second pin diodes may be turned on according to an input control signal to transmit a transmission signal supplied through the sixth metal layer to the fourth metal layer.

According to an embodiment of the present invention, the first pin diode and the first capacitor may be disposed horizontally, and the second pin diode and the second capacitor may be disposed vertically.

According to an embodiment of the present invention, the sixth metal layer includes a first portion disposed on a lower surface of the first insulating layer, a second portion disposed on the upper surface of the third insulating layer, and a fourth metal layer formed in the central region of the first to third insulating layers. It is disposed in the via hole and may include a third portion connecting the first portion and the second portion.

According to an embodiment of the present invention, each of the first and second pin diodes, and the first and second capacitors are disposed in a space between the second portion and the fourth metal film, and may have a phase of 90°.

According to an embodiment of the present invention, each of the first to fourth metal layers may include an opening in a central region.

According to an embodiment of the present invention, the second metal layer may extend through the first via hole formed in the first insulating layer to be connected to the first metal layer.

According to an embodiment of the present invention, the fourth metal layer may be connected to the third metal layer through a second via hole formed in the third insulating layer.

According to an embodiment of the present invention, the fifth metal layer may be connected to the third metal layer through a third via hole formed in the third insulating layer.

An antenna system according to an embodiment of the present invention includes a dual polarized antenna including a plurality of antenna unit cells, and a controller for controlling the dual polarized antenna to transmit a horizontal polarized wave or a vertical polarized wave, each of the plurality of antenna unit cells , Between the first to third insulating films sequentially stacked, the first metal film disposed on the lower surface of the first insulating film, the second metal film disposed between the first insulating film and the second insulating film, the second insulating film, and the third insulating film The third metal film disposed, the fourth metal film disposed on the upper surface of the third insulating film, the fifth metal film disposed spaced apart from the fourth metal film on the upper surface of the third insulating film, and the central region of the first to third insulating films are formed. The first and second pin diodes disposed between the fourth metal film and the sixth metal film so as to have a phase of 90° and disposed on the upper surface of the sixth metal film, the third insulating film, and the third insulating film. The first and second capacitors may be disposed on the upper surface and disposed between the fourth metal film and the sixth metal film so as to face each of the first and second pin diodes.

According to an embodiment of the present invention, the controller includes a signal supply unit for supplying a transmission signal to a dual polarized antenna, a signal receiving unit for receiving a received signal from a dual polarized antenna, and an antenna controlling the dual polarized antenna to transmit horizontal or vertical polarization. It may include a control unit and a main control unit that processes the received signal to obtain information on the detection area, and controls an operation of the antenna control unit.

According to an embodiment of the present invention, when receiving the first setting signal from the main control unit, the antenna control unit outputs a control signal for horizontal polarization transmission to each of a plurality of antenna unit cells, and when receiving the second setting signal from the main control unit, a plurality of A control signal for vertically polarized transmission may be output to each of the antenna unit cells.

According to an embodiment of the present invention, when receiving the first setting signal, the antenna control unit turns on the first pin diode disposed in each of the plurality of antenna unit cells, and turns off the second pin diode. Control signal can be output.

According to an embodiment of the present invention, when receiving the second setting signal, the antenna control unit turns off the first pin diode disposed in each of the plurality of antenna unit cells, and turns on the second pin diode. Control signal can be output.

The operating method of an antenna system according to an embodiment of the present invention includes supplying a transmission signal to a dual polarized antenna including a plurality of antenna unit cells, and controlling a plurality of antenna unit cells by outputting a control signal to the dual polarized antenna. , Transmitting a horizontal polarized wave or a vertical polarized wave based on the transmission signal and the control signal, receiving a received signal for a transmission signal through a dual polarized antenna, and processing the received signal to obtain information on the detection area. It may include.

According to an embodiment of the present invention, the controlling step includes checking a setting state to determine whether it is a setting state for horizontal polarization transmission or a setting state for vertical polarization transmission, and if it is a setting state for horizontal polarization transmission, a plurality of It may include outputting a control signal for horizontally polarized transmission to each of the antenna unit cells, and outputting a control signal for vertically polarized transmission to each of the plurality of antenna unit cells if the state is set for vertically polarized transmission.

According to an embodiment of the present invention, the controlling step includes outputting a control signal for horizontal polarization transmission to turn on a pin diode for horizontal polarization transmission disposed in each of the plurality of antenna unit cells, and to each of the plurality of antenna unit cells. It may include the step of turning off the arranged vertically polarized transmission pin diode.

According to an embodiment of the present invention, the controlling step includes outputting a control signal for vertical polarization transmission to turn on a horizontal polarization transmission pin diode disposed in each of the plurality of antenna unit cells, and to each of the plurality of antenna unit cells. It may include the step of turning off the arranged vertically polarized transmission pin diode.

An embodiment of the present invention provides a dual polarized antenna configured to transmit and receive horizontal polarization and vertical polarization, an antenna system including the same, and a method of operating the same.

According to an embodiment of the present invention, since it is possible to transmit and receive horizontally polarized waves and vertically polarized waves using one double polarized antenna, the structure of the antenna system can be simplified, the volume of the antenna system can be reduced, and the antenna system Can reduce the production cost.

As a result, the present invention can be implemented with a simplified structure, size/volume reduction, and low manufacturing cost under the condition of obtaining the same information quality performance.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

The accompanying drawings are provided to aid understanding of the present embodiment, and provide the embodiments together with a detailed description. However, the technical features of the present embodiment are not limited to a specific drawing, and features disclosed in each drawing may be combined with each other to constitute a new embodiment.
1 is a diagram showing the configuration of an antenna system according to an embodiment of the present invention.
2 is a diagram illustrating an antenna unit cell according to an embodiment of the present invention.
3 is a cross-sectional view of the antenna unit cell shown in FIG. 2.
4 is a flowchart illustrating an operation of an antenna system according to an embodiment of the present invention.
5 is a diagram illustrating a case where an antenna system according to an embodiment of the present invention transmits horizontal polarization.
6 is a diagram illustrating a case where an antenna system according to an embodiment of the present invention transmits vertical polarization.

With respect to the embodiments of the present invention disclosed in the text, specific structural or functional descriptions are exemplified for the purpose of describing the embodiments of the present invention only, and the embodiments of the present invention may be implemented in various forms. It should not be construed as being limited to the described embodiments.

In the present invention, various modifications may be made and various forms may be applied, and specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form disclosed, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms such as first and second may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the existence of disclosed features, numbers, steps, actions, components, parts, or a combination thereof, but one or more other features or numbers, It is to be understood that the presence or addition of steps, actions, components, parts, or combinations thereof, does not preclude the possibility of preliminary exclusion.

Unless otherwise defined, all terms used herein including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in the present application. Does not.

Meanwhile, when a certain embodiment can be implemented differently, a function or operation specified in a specific block may occur differently from the order specified in the flowchart. For example, two consecutive blocks may actually be executed at the same time, or the blocks may be executed in reverse, depending on a related function or operation.

Hereinafter, a dual polarized antenna, an antenna system including the same, and a method of operating the same according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to elements of each drawing, it should be noted that the same elements are assigned the same numerals as possible even if they are indicated on different drawings. In addition, in describing the present invention, when it is determined that a detailed description of a related known configuration or function may obscure the subject matter of the present invention, a detailed description thereof will be omitted. In addition, a preferred embodiment of the present invention will be described below, but the technical idea of the present invention is not limited thereto or is not limited thereto, and may be modified and variously implemented by those skilled in the art.

1 is a diagram showing the configuration of an antenna system according to an embodiment of the present invention.

Referring to FIG. 1, the antenna system 1 according to an embodiment of the present invention can transmit horizontal polarization and vertical polarization to a detection area using one double polarized antenna, and a signal reflected by an object in the detection area. It can be implemented to receive. The antenna system 1 according to the embodiment of the present invention can be applied to various sales such as radar field and wireless communication field.

The antenna system 1 according to an embodiment of the present invention may include a dual polarized antenna 100 and a controller 300, and the configuration of the antenna system 1 is not limited thereto.

The dual polarization antenna 100 according to an embodiment of the present invention may be implemented to transmit and receive horizontal polarization or transmit and receive vertical polarization under the control of the controller 300. For example, the double polarized antenna 100 may transmit a horizontal polarized wave or a vertical polarized wave having a high frequency corresponding to the current from the controller 300.

The dual polarized antenna 100 includes a plurality of antenna unit cells 100a, and the plurality of antenna unit cells 100a may be arranged in an M×N array. Here, M is a natural number of 2 or more, N may be a natural number of 2 or more, and M and N may be the same or different.

Each of the plurality of antenna unit cells 100a may be implemented to transmit and receive horizontal polarization or vertical polarization under the control of the controller 300. Each of the plurality of antenna unit cells 100a may transmit a horizontal polarized wave or a vertical polarized wave having a high frequency corresponding to the current from the controller 300 under the control of the controller 300. Each of the plurality of antenna unit cells 100a may be simultaneously controlled under the control of the controller 300.

Under the control of the controller 300, the plurality of antenna unit cells 100a may be configured such that a signal (or current) supplied from the controller 300 proceeds in the horizontal direction (X), and accordingly, a double polarized antenna 100 may transmit a horizontal polarization.

Under the control of the controller 300, the plurality of antenna unit cells 100a may be configured such that a signal (or current) supplied from the controller 300 proceeds in the vertical direction (Y), and accordingly, a dual polarized antenna 100 may transmit vertical polarization.

A detailed structure of the dual polarized antenna 100 and an operation according to the control of the controller 300 will be described later.

The controller 300 according to an embodiment of the present invention may be implemented to control the dual polarized antenna 100 so that the dual polarized antenna 100 transmits and receives horizontal polarization or transmits and receives vertical polarization. The controller 300 may be implemented to control each of the plurality of antenna unit cells 100a so that each of the plurality of antenna unit cells 100a transmits and receives horizontal polarization or transmits and receives vertical polarization. The controller 300 may simultaneously control each of the plurality of antenna unit cells 100a.

The controller 300 may supply a current corresponding to a signal (transmission signal) to be transmitted through the dual polarized antenna 100 to the dual polarized antenna 100, and a signal (received) received through the dual polarized antenna 100 Signal).

The controller 300 may be implemented so that the plurality of antenna unit cells 100a transmit and receive horizontal polarization or transmit and receive vertical polarization by supplying a current corresponding to a transmission signal to each of the plurality of antenna unit cells 100a.

The controller 300 controls the plurality of antenna unit cells 100a to allow a signal (or current) to flow in the horizontal direction X through the plurality of antenna unit cells 100a, so that the double polarized antenna 100 It is possible to transmit and receive horizontal polarization.

The controller 300 controls the plurality of antenna unit cells 100a to allow a signal (or current) to flow in the vertical direction (Y) through the plurality of antenna unit cells 100a. It is possible to transmit and receive vertically polarized waves.

The controller 300 may include a signal supply unit 310, a signal receiving unit 330, an antenna control unit (or polarization conversion unit) 350, a main control unit (or central control unit) 370, and a display unit 390, and , The configuration of the controller 300 is not limited thereto.

The signal supply unit 310 may supply a transmission signal to the double polarized antenna 100. For example, the signal supply unit 310 may supply a current corresponding to the transmission signal to the double polarized antenna 100. The signal supply unit 310 may supply a transmission signal (or current) to a plurality of antenna unit cells 100a.

The signal receiver 330 may receive a received signal from the double polarized antenna 100. The signal receiver 330 may provide a received signal to the controller 370. The signal receiver 330 may receive received signals from a plurality of antenna unit cells 100a.

The antenna control unit 350 may be implemented to control the double polarized antenna 100 so that the double polarized antenna 100 transmits and receives horizontal polarized waves or transmits and receives vertical polarized waves. The antenna controller 350 may be implemented to control the plurality of antenna unit cells 100a so that the double polarized antenna 100 transmits and receives horizontal polarization or vertical polarization.

For example, the antenna control unit 350 may control the double polarized antenna 100 according to a set signal from the main control unit 370 to allow the double polarized antenna 100 to transmit and receive horizontal polarization or transmit and receive vertical polarization. .

The antenna control unit 350 outputs a control signal for horizontal polarization transmission to the double polarized antenna 100 when receiving the first set signal from the main control unit 370, and receives the second set signal to the double polarized antenna 100. A control signal for vertical polarization transmission can be output.

The antenna control unit 350 may be implemented to control a pin diode configured in each of the plurality of antenna unit cells 100a so that the double polarized antenna 100 transmits and receives horizontal polarization or transmits and receives vertical polarization.

The antenna controller 350 may be implemented to output a control signal to each of the plurality of antenna unit cells 100a through pin diodes, so that the plurality of antenna unit cells 100a transmit and receive horizontal polarization or transmit and receive vertical polarization. For example, the antenna control unit 350 may output an on signal or an off signal as a control signal.

The main control unit 370 may process a received signal from the signal receiving unit 330 to obtain information on the detection area. For example, the main control unit 370 may obtain raw data from the received received signal and obtain information on the detection area by applying a radar imaging algorithm to the obtained data. For example, the radar information acquisition algorithm may be a space objectification radar (SOR), but is not limited thereto.

The main control unit 370 may control an operation timing of the signal supply unit 310. For example, the main control unit 370 may output a timing signal to the signal supply unit 310 so that the signal supply unit 310 supplies the transmission signal to the double polarized antenna 100.

The main control unit 370 may control an operation timing and an operation state of the antenna control unit 350. For example, the main control unit 370 may output a timing signal and a setting signal to the antenna control unit 350 so that the antenna control unit 350 outputs the control signal to the double polarized antenna 100. For example, the main control unit 370 may output a first setting signal for allowing the double polarized antenna 100 to transmit a horizontal polarized wave or a second setting signal for causing the double polarized antenna 100 to transmit a vertical polarized wave. I can.

The main control unit 370 may provide the obtained information to the display unit 390 to display information on the detection area through the display unit 390.

2 is a diagram illustrating an antenna unit cell according to an embodiment of the present invention. 3 is a cross-sectional view of the antenna unit cell shown in FIG. 2.

2 and 3, the antenna unit cell 100a according to the embodiment of the present invention may include a plurality of insulating layers, a plurality of metal layers, a plurality of pin diodes, a plurality of capacitors, and a plurality of via holes. have.

For example, the antenna unit cell 100a includes first to third insulating layers 111, 113 and 115, first to sixth metal layers 131, 132, 133, 134, 135, 136, and the first and second insulating layers 111, 113, and 115. It may include 2-pin diodes 151 and 153, first and second capacitors 171 and 173, and first to fourth via holes VH1, VH2, VH3, and VH4.

The first to third insulating layers 111, 113 and 115 are sequentially stacked, a second insulating layer 113 is disposed on the first insulating layer 111, and a third insulating layer 115 is disposed on the second insulating layer 113. ) Can be placed.

The first via hole VH1 is formed in the first insulating layer 111 so as to penetrate some of the upper surface of the first insulating layer 111, and the second and third via holes VH2 and VH3 are the upper surfaces of the third insulating layer 115. And the third insulating layer 115 to penetrate through the lower surface, and are formed in different regions of the third insulating layer 115 and are not connected to each other. For example, there may be one or a plurality of first to third via holes VH1, VH2, and VH3.

The fourth via hole VH4 is formed to penetrate the upper and lower surfaces of the antenna unit cell 100a and may be formed to penetrate the first to third insulating layers 111, 113 and 115. For example, the fourth via hole VH4 may be formed in the central region of the antenna unit cell 100a, and may be formed through the central region of each of the first to third insulating layers 111, 113, and 115. .

The first to sixth metal layers 131 to 136 may be disposed on one surface of the plurality of insulating layers 111, 113, and 115, or between two of the plurality of insulating layers 111, 113, and 115. .

The first to fifth metal layers 131 to 135 are not disposed in the central region of the antenna unit cell 100a, and the central region of the antenna unit cell 100a penetrates the upper and lower surfaces of the antenna unit cell 100a. It may be defined as an area in which the sixth metal layer 136 is disposed. Also, the central region of the first to third insulating layers 111, 113, and 115 corresponds to the central region of the antenna unit cell 100a and may be a region in which the sixth metal layer 146 is disposed.

The first metal layer 131 may be disposed on the lower surface of the first insulating layer 111 and may serve as a receiving end for receiving a received signal. The first metal layer 131 may be connected to the signal receiving unit 330 of the controller 300 and may transmit a received signal to the signal receiving unit 330.

The first metal layer 131 may be disposed in an area other than the central area of the first insulating layer 111 and may be, for example, a flat plate including an opening (first opening) formed in the central area. It does not become.

The second metal layer 132 is disposed between the first insulating layer 111 and the second insulating layer 113 and is in a grounded state, and may serve as a ground terminal. The second metal layer 132 may have a plate shape including an opening (second opening) formed in a central region, but is not limited thereto. The second metal layer 132 is not disposed in the central area of the first insulating layer 111 and in the central area of the second insulating layer 113.

The second metal layer 132 may extend toward the first metal layer 132 through the first via hole VH1 formed in the first insulating layer 111 to be connected to the first metal layer 132.

The third metal layer 133 may be disposed between the second insulating layer 113 and the third insulating layer 115. For example, the third metal layer 133 may have a plate shape including an opening (a third opening) formed in a central region, but is not limited thereto. The third metal layer 133 is not disposed in the central region of the second insulating layer 113 and in the central region of the third insulating layer 115.

The fourth metal layer 134 may be disposed on the upper surface of the third insulating layer 115 and may serve as a transmission terminal for transmitting a transmission signal. The fourth metal layer 134 may be connected to the signal supply unit 310 of the controller 300 through any one of the first and second pin diodes 151 and 153 and the sixth metal layer 136.

The fourth metal layer 134 may be disposed in an area other than the central area of the third insulating layer 115, and may be, for example, a plate shape including an opening (fourth opening) formed in the central area, and is limited thereto. It is not.

The fourth metal layer 134 may extend toward the third metal layer 133 through the second via hole VH2 formed in the third insulating layer 115 to be connected to the third metal layer 133.

The fifth metal layer 135 may be disposed on the upper surface of the third insulating layer 115 to be spaced apart from the fourth metal layer 134. The fifth metal layer 135 may be disposed at the edge of the third insulating layer 115 and may receive a forward bias voltage.

The fifth metal layer 135 may extend toward the third metal layer 133 through the third via hole VH3 formed in the third insulating layer 115 to be connected to the third metal layer 133.

The sixth metal layer 136 is disposed in the central region of the antenna unit cell 100a and may be disposed to penetrate the upper and lower surfaces of the central region of the antenna unit cell 100a. The sixth metal layer 136 may be disposed in the fourth via hole VH4 formed through a central region of each of the first to third insulating layers 111, 113, and 115.

The sixth metal layer 136 includes a first portion (or lower surface) 136a disposed on the lower surface of the first insulating layer 111 and a second portion (or upper surface portion) disposed on the upper surface of the third insulating layer 115 (136b), and a third portion (or connection portion) 136c connecting the first portion 136a and the second portion 136b.

The sixth metal film 136 may receive a transmission signal from the controller 300, and the transmission signal is supplied to the first part 136a and transmitted to the second part 136b through the third part 136c. Then, it may be transferred to the fourth metal layer 134 through one of the first and second pin diodes 151 and 153.

The first portion 136a and the third portion 136c may have a disk shape, but are not limited thereto. The first portion 136a may be disposed in a first opening formed in the first metal layer 131 and may be spaced apart from the first metal layer 131. The third portion 136c may be disposed in the fourth opening formed in the fourth metal layer 134 and may be spaced apart from the fourth metal layer 134.

The first pin diode (or horizontal polarization transmission pin diode) 151 and the second pin diode (or vertical polarization transmission pin diode) 153 may be disposed on the third insulating layer 115. The first and second pinned diodes 151 and 153 are disposed between the fourth metal layer 134 and the second portion 136b of the sixth metal layer 136, and the fourth metal layer 134 and It may be disposed in a space between the second portions 136b of the sixth metal layer 136.

The first and second pin diodes 151 and 153 operate under the control of the controller 300 to selectively connect the fourth metal layer 134 and the sixth metal layer 136. One side (or one end or anode) of each of the first and second pin diodes 151 and 153 is connected to the sixth metal layer 136 and the other side of each of the first and second pin diodes 151 and 153 (or The other end or cathode) may be connected to the fourth metal layer 134.

The first and second pin diodes 151 and 153 are spaced apart to have a 90° phase, and the antenna unit cells 100a are arranged to transmit horizontal polarization and vertical polarization.

The first pin diode 151 may be disposed parallel to the horizontal direction X, and may be disposed so that the antenna unit cell 100a transmits the horizontal polarization under the control of the controller 300. The second pin diode 153 may be disposed parallel to the vertical direction Y, and may be disposed so that the antenna unit cell 100a transmits the vertical polarization under the control of the controller 300.

The first pin diode 151 is disposed on a horizontal extension line of the center C of the antenna unit cell 100a, and the second pin diode 153 is on a vertical extension line of the center C of the antenna unit cell 100a. Can be placed on

The first and second pin diodes 151 and 153 may be turned on according to an input control signal to transmit a transmission signal supplied through the sixth metal layer 136 to the fourth metal layer 134.

The first pin diode 151 is turned on according to a control signal (on signal) from the controller 300, so that the transmission signal from the sixth metal film 136 is in a horizontal direction along the fourth metal film 134 You can make it progress to (X). The second pin diode 153 is turned on according to a control signal (on signal) from the controller 300, so that the transmission signal from the sixth metal film 136 is in a vertical direction along the fourth metal film 134 You can make it progress to (Y).

The first capacitor (or horizontal polarization transmission capacitor) 171 and the second capacitor (or vertical polarization transmission capacitor) 173 may be disposed on the upper surface of the third insulating layer 115. The first and second capacitors 171 and 173 are disposed between the fourth metal layer 134 and the second portion 136b of the sixth metal layer 136, and the fourth metal layer 134 and the 6 It may be disposed in a space between the second portions 136b of the metal layer 136.

One side (or one end) of each of the first and second capacitors 171 and 173 is connected to the fourth metal layer 134, and the other side (or the other end) of each of the first and second capacitors 171 and 173 6 It may be connected to the metal layer 136.

The first and second capacitors 171 and 173 may be spaced apart to have a 90° phase, and may be disposed so that the antenna unit cell 100a transmits horizontal polarization and vertical polarization.

The first capacitor 171 may be disposed parallel to the horizontal direction X so that the antenna unit cell 100a transmits the horizontal polarization. The second capacitor 173 may be disposed parallel to the vertical direction Y so that the antenna unit cell 100a transmits the vertical polarization.

The first capacitor 171 is disposed on a horizontal extension line of the center C of the antenna unit cell 100a, and the first pin diode 151 is interposed with the second portion 136b of the sixth metal layer 136 therebetween. ) Can be placed opposite. Accordingly, the first pin diode 151 and the first capacitor 171 may be disposed on the same horizontal line.

The second capacitor 173 is disposed on a vertical extension line of the center C of the antenna unit cell 100a, and the second pin diode 153 is interposed with the second portion 136b of the sixth metal layer 136 therebetween. ) Can be placed opposite. Accordingly, the second pin diode 153 and the second capacitor 173 may be disposed on the same vertical line.

Accordingly, the first and second pin diodes 151 and 153, and the first and second capacitors 171 and 173 may be disposed on the upper surface of the third insulating layer 115 to have a 90° phase.

4 is a flowchart illustrating an operation of an antenna system according to an embodiment of the present invention. 5 is a diagram illustrating a case where an antenna system according to an embodiment of the present invention transmits horizontal polarization. 6 is a diagram illustrating a case where an antenna system according to an embodiment of the present invention transmits vertical polarization.

The step-by-step operation shown in FIG. 4 may be performed by the antenna system 1 described with reference to FIGS. 1 to 3.

4 to 6, the signal supply unit 310 supplies a transmission signal to the double polarized antenna 100 (S400). Then, the antenna control unit 350 outputs a control signal to the double polarized antenna 100 according to the setting state (S410). Step S400 and step S410 may be performed simultaneously or may be performed sequentially.

In step S400, the signal supply unit 310 may supply a current corresponding to the transmission signal to the double polarized antenna 100.

In step S410, the antenna control unit 350 outputs a control signal to each of the plurality of antenna unit cells 100a of the double polarized antenna 100 to control each of the plurality of antenna unit cells 100a.

In step S410, the antenna control unit 350 may output a control signal to the first and second pin diodes 510 and 530 of each of the plurality of antenna unit cells 100a, and an on signal or an off signal as a control signal. Can be printed.

In step S410, the antenna control unit 350 may check the setting state (S411), and determine whether it is the setting state for horizontal polarization transmission (S412).

In step S412, if it is determined that the state is set for horizontal polarization transmission (S412-Yes), the antenna control unit 350 outputs an ON signal to the first pin diode 510 of each of the plurality of antenna unit cells 100a. , The off signal is output to the second pin diode 530 of each of the plurality of antenna unit cells 100a (S413).

When step S413 is performed, in each of the plurality of antenna unit cells 100a, the first pin diode 510 is turned on and the second pin diode 530 is turned off, as shown in FIG. Flows in the horizontal direction X, and accordingly, the double polarized antenna 100 transmits a horizontal polarized wave (S420).

In step S412, if it is determined that the state is not set for horizontal polarization transmission (S412-No), the antenna control unit 350 outputs an off signal to the first pin diode 510 of each of the plurality of antenna unit cells 100a. Then, an ON signal is output to the second pin diode 530 of each of the plurality of antenna unit cells 100a (S414).

When step S414 is performed, in each of the plurality of antenna unit cells 100a, the first pin diode 510 is turned off and the second pin diode 530 is turned on, as shown in FIG. Flows in the vertical direction Y, and accordingly, the double polarized antenna 100 transmits a vertical polarized wave (S430).

After the double polarized antenna 100 transmits the horizontal polarized wave according to step S420, or the double polarized antenna 100 transmits the vertical polarized wave according to step S430, the signal receiver 330 receives it through the double polarized antenna 100 The received signal is received (S440).

In step S440, the signal receiving unit 330 provides the received signal to the main control unit 370, and the main control unit 370 processes the received signal from the signal receiving unit 330 to obtain information on the detection area (S450), The detection area information may be displayed through the display unit 390 (S460).

As described above, a dual polarization antenna according to an embodiment of the present invention, an antenna system including the same, and an operation method thereof have been described according to the embodiments, but the scope of the present invention is not limited to specific embodiments, and In relation to this, various alternatives, modifications, and changes can be implemented within the scope that is apparent to those of ordinary skill in the art.

Accordingly, the embodiments described in the present invention and the accompanying drawings are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings. . The scope of protection of the present invention should be interpreted by the claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

1: antenna system
100: dual polarized antenna
100a: Intena unit cell
111 to 115: first to third insulating layers
131 to 136: first to sixth metal films
151: first pin diode
153: second pin diode
171: first capacitor
173: second capacitor
VH1 to VH4: first to fourth via holes
300: controller
310: signal supply
330: signal receiver
350: antenna control unit
370: main control unit
390: display

Claims (20)

Including a plurality of antenna unit cells,
Each of the plurality of antenna unit cells,
First to third insulating layers sequentially stacked;
A first metal film disposed on a lower surface of the first insulating film;
A second metal layer disposed between the first insulating layer and the second insulating layer;
A third metal layer disposed between the second insulating layer and the third insulating layer;
A fourth metal film disposed on the upper surface of the third insulating film;
A fifth metal film disposed on an upper surface of the third insulating film and spaced apart from the fourth metal film;
A sixth metal film disposed through the central region of the first to third insulating films;
First and second pin diodes disposed on an upper surface of the third insulating layer and disposed between the fourth metal layer and the sixth metal layer to have a 90° phase; And
A double polarization comprising first and second capacitors disposed on the upper surface of the third insulating film and disposed between the fourth metal film and the sixth metal film so as to face each of the first and second pin diodes antenna.
The method of claim 1,
The plurality of antenna unit cells are arranged in the form of an M×N double polarized antenna.
The method of claim 1,
The first metal film serves as a receiving end for receiving a received signal,
The second metal layer is grounded,
The third metal film is connected to the fourth metal film and the fifth metal film,
The fourth metal film serves as a transmitter for transmitting a transmission signal,
The fifth metal layer is supplied with a forward bias voltage,
The sixth metal layer is a dual polarized antenna to receive a current corresponding to the transmission signal.
The method of claim 1,
The first and second pin diodes are turned on according to an input control signal to transmit a transmission signal supplied through the sixth metal film to the fourth metal film.
The method of claim 1,
The first pin diode and the first capacitor are disposed horizontally, and the second pin diode and the second capacitor are disposed vertically.
The method of claim 1,
The sixth metal film is
A first portion disposed on a lower surface of the first insulating layer;
A second portion disposed on the upper surface of the third insulating layer; And
And a third portion disposed in a fourth via hole formed in a central region of the first to third insulating layers and connecting the first portion and the second portion.
The method of claim 6,
The first and second pin diodes, and each of the first and second capacitors are disposed in a space between the second portion and the fourth metal film, and have a phase of 90°.
The method of claim 1,
Each of the first to fourth metal layers includes an opening in a central region.
The method of claim 1,
The second metal layer extends through a first via hole formed in the first insulating layer and is connected to the first metal layer.
The method of claim 1,
The fourth metal layer is connected to the third metal layer through a second via hole formed in the third insulating layer.
The method of claim 1,
The fifth metal layer is connected to the third metal layer through a third via hole formed in the third insulating layer.
A dual polarized antenna including a plurality of antenna unit cells; And
And a controller for controlling the dual polarized antenna to transmit a horizontal polarized wave or a vertical polarized wave,
Each of the plurality of antenna unit cells,
First to third insulating layers sequentially stacked;
A first metal film disposed on a lower surface of the first insulating film;
A second metal layer disposed between the first insulating layer and the second insulating layer;
A third metal layer disposed between the second insulating layer and the third insulating layer;
A fourth metal film disposed on the upper surface of the third insulating film;
A fifth metal film disposed on an upper surface of the third insulating film and spaced apart from the fourth metal film;
A sixth metal film disposed through the central region of the first to third insulating films;
First and second pin diodes disposed on an upper surface of the third insulating layer and disposed between the fourth metal layer and the sixth metal layer to have a 90° phase; And
An antenna system comprising first and second capacitors disposed on an upper surface of the third insulating film and disposed between the fourth metal film and the sixth metal film so as to face each of the first and second pin diodes .
The method of claim 12,
The controller,
A signal supply unit supplying a transmission signal to the double polarized antenna;
A signal receiver for receiving a received signal from the double polarized antenna;
An antenna control unit for controlling the double polarized antenna to transmit a horizontal polarized wave or a vertical polarized wave; And
And a main control unit configured to process the received signal to obtain information on a detection area, and to control an operation of the antenna control unit.
The method of claim 13,
The antenna control unit outputs a control signal for horizontal polarization transmission to each of the plurality of antenna unit cells when receiving a first setting signal from the main control unit, and when receiving a second setting signal from the main control unit, the plurality of antenna unit cells An antenna system that outputs a control signal for transmitting vertically polarized waves, respectively.
The method of claim 14,
When receiving the first setting signal, the antenna control unit turns on the first pin diode disposed in each of the plurality of antenna unit cells and turns on the second pin diode. The antenna system that outputs.
The method of claim 14,
The antenna control unit turns off the first pin diode disposed in each of the plurality of antenna unit cells when receiving the second setting signal, and the vertical polarization transmission control signal turns on the second pin diode The antenna system that outputs.
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