KR102446275B1 - Array antenna apparatus and error correcting method thereof - Google Patents

Abstract

An array antenna device of the present invention comprises: a plurality of antenna elements; a plurality of transceivers connected to each of the plurality of antenna elements; a tester for calculating the magnitude and phase of an output signal output from the plurality of transceivers to the plurality of antenna elements to provide a test signal; and a test line which couples a part of the output signal output to the antenna element and transmits the part of the output signal to the tester, or which is connected to the plurality of antenna elements in an open-stub structure to input the test signal to each of the plurality of antenna elements. Therefore, it is possible to easily measure and compensate errors of the antenna element or transceiver.

Description

Array antenna device and error correction method thereof

The present invention relates to an array antenna device and an error correction method thereof, and more particularly, to an array antenna device capable of easily measuring and compensating for errors of an antenna element or a transceiver, and an error correction method thereof.

In general, an active phased array antenna includes a plurality of antenna elements arranged along a set position, and a plurality of transmit/receive modules (TRM) connected to each of the plurality of antenna elements. The phased array antenna may synthesize various beams by changing the size and phase of each antenna element using a transceiver module.

In this case, the antenna elements or elements used in the transceiver module may have different signal characteristics according to component characteristics, manufacturing conditions, and surrounding environments. Accordingly, functions such as beam steering or multi-beam formation of the phased array antenna may be deteriorated.

Conventionally, in order to compensate for an error according to the signal characteristics of the device itself, each of the antenna elements is manually aligned with the source antenna in a near field or nuclear field measurement room, and signals are measured. However, measuring hundreds of antenna elements in this way takes too much time and is very cumbersome. Therefore, there is a problem in that it is difficult to measure and correct errors in real time while operating the phased array antenna.

US 10-1007220 B

The present invention provides an array antenna device capable of easily measuring and compensating for errors of an antenna element or a transceiver, and a method for correcting the same.

The present invention provides an array antenna device which can be miniaturized by simplifying the structure of an inspection line and a method for correcting the same.

The present invention includes a plurality of antenna elements; a plurality of transceivers connected to each of the plurality of antenna elements; a checker for calculating magnitudes and phases of output signals respectively output from the plurality of transceivers to the plurality of antenna elements or for providing a check signal; and the plurality of antenna elements in an open-stub structure so as to couple a part of the output signal outputted to the antenna element and transmit it to the inspection machine, or input the inspection signal to each of the plurality of antenna elements. It includes a connecting inspection line.

The inspection line includes: an inspection line extending along the plurality of antenna elements; and an inspection probe branching from the inspection line and having an open end disposed within the antenna element.

The antenna element may include: a body having an inner space and having an open surface; a first substrate installed on one surface of the main body to cover the inner space of the main body; a second substrate installed on the other surface opposite to one surface of the main body; a radiation patch installed on the surface of the first substrate; and a feeding probe connected to the first substrate to feed the radiation patch.

The inspection probe penetrates through the second substrate and the main body, is spaced apart from the first substrate in an inner space of the main body, and is disposed parallel to the power feeding probe.

The inspection probe may include a probe body having one side in contact with the second substrate and the other side facing the first substrate; and an insulator having a shorter length than the probe body formed to surround a portion of the probe body to insulate between the probe body and the body, and extending from the probe body so that the other end of the probe body is exposed to the inner space of the body. do.

The length of the inspection probe is adjusted to a length of 1/2 of a wavelength calculated by the operating frequency of the array antenna device.

The plurality of antenna elements are arranged in a first direction and a second direction intersecting the first direction, and the inspection line extends in the first direction and is provided in plurality and is spaced apart in the second direction, the inspection line It further includes a transmitter having one side connected to the inspection lines and the other side connected to the inspector so as to transmit an output signal from the field to the inspection machine or to distribute the inspection signal equally to each of the inspection lines.

One end of the inspection line is connected to the transmitter, and the inspection line further includes a resistance member connected to the other end of the inspection line.

The present invention provides an error correction method for an array antenna device having a plurality of antenna elements and a plurality of transceivers connected to each of the plurality of antenna elements, wherein a reference signal is output from the plurality of transceivers to each of the plurality of antenna elements, calculating magnitude and phase by coupling the reference signal in an inspection line connected to the plurality of antenna elements in an open-stub structure; outputting an operation signal from the plurality of transceivers to each of the plurality of antenna elements while operating the array antenna device, and coupling the operation signal on the inspection line to calculate magnitude and phase; calculating an error by comparing magnitudes and phases of the reference signal and the operating signal; and correcting the error by changing the magnitude and phase of the signal output from each of the plurality of transceivers.

The inspection line includes a plurality of inspection probes having an open end disposed in the antenna element, and the process of coupling the reference signal and the process of coupling the operation signal includes: and coupling the signal outputted from the end to the antenna element.

The present invention provides an error correction method for an array antenna device having a plurality of antenna elements and a plurality of transceivers connected to each of the plurality of antenna elements, the method comprising: generating a check signal; coupling the inspection signal to each of the plurality of antenna elements through an inspection line connected to the plurality of antenna elements in an open-stub structure; calculating, in each of the plurality of transceivers, magnitudes and phases of check signals coupled from each of the plurality of antenna elements; calculating an error by comparing magnitudes and phases of the inspection signals calculated from each of the plurality of transceivers; and correcting the error by adjusting the magnitude and phase of the signal received by each of the plurality of transceivers.

The inspection line includes a plurality of inspection lines, and a plurality of inspection probes branching from each of the plurality of inspection lines and having an open end disposed in the antenna element, and sending the inspection signal to each of the plurality of antenna elements. The coupling process may include distributing the inspection signal to each of the plurality of inspection lines to be the same; and inputting the inspection signal to the antenna element by the open end of each of the plurality of inspection probes.

According to embodiments of the present invention, an error of an antenna element or a transceiver can be quickly measured using an inspection probe provided on an inspection line. Accordingly, it is possible to easily perform calibration of the array antenna device.

In addition, the structure of the inspection line can be simplified and miniaturized. Accordingly, the inspection line can be easily installed in a small space. Therefore, even if the distance between the antenna elements is narrowed, it is possible to measure the error by installing the inspection line.

1 is a diagram showing the structure of an array antenna device according to an embodiment of the present invention.
2 is a diagram illustrating a structure in which an inspection line is connected to antenna elements according to an embodiment of the present invention.
3 is a diagram illustrating a structure in which a feeding probe and an inspection probe are installed in an antenna element according to an embodiment of the present invention.
4 is a flowchart illustrating an error correction method of an array antenna device according to an embodiment of the present invention.
5 is a flowchart illustrating an error correction method of an array antenna device according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and the scope of the invention to those of ordinary skill in the art will be completely It is provided to inform you. In order to explain the invention in detail, the drawings may be exaggerated, and like numerals refer to like elements in the drawings.

1 is a diagram showing the structure of an array antenna device according to an embodiment of the present invention, FIG. 2 is a diagram showing a structure in which an inspection line is connected to antenna elements according to an embodiment of the present invention, and FIG. 3 is the present invention It is a view showing a structure in which the feeding probe and the inspection probe are installed in the antenna element according to an embodiment of the present invention.

An array antenna device according to an embodiment of the present invention is a device mounted on a radar device for military purposes, a communication device, or a monitoring device to transmit and receive a signal. 1 and 2 , the array antenna device 100 includes a plurality of antenna elements 110 , a plurality of transceivers 120 , a checker 140 , and a check line 150 .

At this time, the present invention will be described by exemplifying the front-rear direction extending back and forth, the left-right direction extending horizontally, and the vertical direction extending vertically. However, the present invention is not limited thereto and the direction may be variously changed.

A plurality of transceivers 120 may be provided to be connected to each of the plurality of antenna elements 110 . The transceiver 120 may be a Transmit Receive Module (TRM), and may output a signal and transmit it to the antenna element 110 , or may receive and process a signal received by the antenna element 110 . Therefore, when an error occurs in the antenna element 110 or the transceiver 120, the phase or magnitude of the signal output from the transceiver 120 is changed, or the phase or magnitude of the signal received by the transceiver 120 is changed. It can be adjusted and corrected.

The checker 140 may calculate the magnitude and phase of the output signals respectively output from the plurality of transceivers 120 to the plurality of antenna elements 110 . Accordingly, an error occurring in the antenna element 110 or the transceiver 120 may be calculated. For example, when the transceiver 120 generates a reference signal having the same phase and size as an output signal and outputs the same to the antenna elements 110 , the reference signal is coupled through the inspection line 150 and the inspector ( 140) to calculate the phase and magnitude of the reference signal. Thereafter, when operating the array antenna device 100 and generating an operating signal as an output signal from the transceivers 120 and outputting it to the antenna elements 110 , the operating signal is coupled through the inspection line 150 and checked It can be transmitted to the unit 140 to calculate the phase and magnitude of the operation signal. Accordingly, the checker 140 may calculate an error by comparing the phase and magnitude of the reference signal and the operation signal.

Also, the inspector 140 may provide an inspection signal. For example, the checker 140 may include a separate transmission module (not shown). A signal of the same type as the output signal generated by the transceiver 120 from the transmission module may be generated as a check signal. The inspection signal may be coupled from each of the antenna elements 110 through the inspection line 150 and transmitted to each of the transceivers 120 . The phase and magnitude of the inspection signal received from the transceivers 120 may be calculated, respectively. Accordingly, an error may be calculated by comparing values calculated by the transceivers 120 .

A plurality of antenna elements 110 may be provided. For example, as shown in FIG. 2 , the plurality of antenna elements 110 may be arranged in a first direction (or up-down direction) and in a second direction (or left-right direction) crossing the first direction. Referring to FIG. 3 , each of the antenna elements 110 includes a body 111 , a first substrate 112 , a second substrate 113 , a radiation patch 114 , and a feeding probe 115 .

The body 111 may have an inner space and one surface may be opened. For example, the body 111 may be formed in the form of a rectangular cavity to have an inner space, and the front may be opened. However, the structure and shape of the main body 111 is not limited thereto and may vary.

The first substrate 112 may be installed on one surface of the main body 111 to cover the inner space of the main body 111 . The first substrate 112 may be a dielectric substrate. For example, the first substrate 112 may be formed in a plate shape along the front shape of the main body 111 and installed to cover the open portion of the main body 111 . Accordingly, the inner space of the body 111 may be sealed.

The second substrate 113 may be installed on the other surface opposite to one surface of the main body 111 . The second substrate 113 may be a dielectric substrate. For example, the second substrate 113 may be formed in a plate shape along the rear surface of the main body 111 and installed on the rear surface of the main body 111 . Accordingly, the body 111 , the first substrate 112 , and the second substrate 113 may be stacked in the front-rear direction.

The radiation patch 114 may be installed on the surface of the first substrate 112 . For example, the radiation patch 114 may be installed on the front surface of the first substrate 112 . In addition, it can operate by receiving an output signal transmitted from the transceiver 120 . Accordingly, each of the transceivers 120 may electronically change the phase of the output signal fed to the radiation patch 114 of each of the antenna elements 110 to scan the radiation beam to the outside.

The feeding probe 115 may be connected to the first substrate 112 to supply power to the radiation patch 114 . The feeding probe 115 may pass through the main body 111 and the second substrate 113 and be disposed to contact the first substrate 112 . For example, a first through hole extending in the front-rear direction may be provided on the rear surface of the main body 111 and the second substrate 113 , and the feeding probe 115 extends in the front-rear direction to form the main body 111 and the second substrate 113 . 2 It may be inserted into the body 111 through the first through hole of the substrate 113 . Accordingly, one end (or the front end) of the feeding probe 115 may be connected to the rear surface of the first substrate 112 in the inner space of the main body 111 to face the radiation patch 114 . The feeding probe 115 includes a first probe body 115a and a first insulator 115b.

The first probe body 115a may be formed in the form of a rod extending in the front-rear direction. The first probe body 115a may contact the first substrate 112 . Accordingly, the first probe body 115a may supply power to the radiation patch 114 through the first substrate 112 .

The first insulator 115b is a portion of the first probe body 115a to insulate between the first probe body 115a and the main body 111 and between the first probe body 115a and the second substrate 112 . It is formed to surround, and the length extending from the first probe body 115a may be shorter than that of the first probe body 115a so that the front end of the first probe body 115a is exposed to the inner space of the body 111 . Accordingly, the first probe body 115a may stably feed power.

As for the inspection line 150 , one side of the inspection line 150 may be connected to the plurality of antenna elements 110 , and the other side may be connected to the inspection device 140 . In detail, the inspection line 150 may be connected to a plurality of antenna elements in an open-stub structure. Accordingly, the inspection line 150 couples a part of the output signal output to the antenna element 110 and transmits it to the inspector 140 , or transmits the inspection signal generated by the inspection unit 140 to the plurality of antenna elements 110 . ) can be entered individually. 2 and 3 , the inspection line 150 includes an inspection line 151 and an inspection probe 152 .

The inspection line 151 may form a path through which a signal moves. The inspection line 151 may extend along the plurality of antenna elements 110 . For example, the inspection lines 151 may extend in a first direction (or a vertical direction), and a plurality of inspection lines 151 may be provided to be spaced apart from each other in a second direction (left and right directions). The second through-holes of the antenna elements 110 to be described later may be aligned in the first direction in line with the inspection line 151 at the facing position, and each of the inspection lines 151 is the antenna element 110 at the facing position. It can be connected to the back of them. However, the structure in which the inspection line 151 is formed and the structure in which the inspection lines 151 are arranged are not limited thereto, and may vary.

In this case, when a plurality of inspection lines 151 are provided, the array antenna device 100 may further include a transmitter 130 . The transmitter 130 may have one side connected to the inspection lines 151 and the other side connected to the inspection unit 140 . For example, an upper portion of the transmitter 130 may be connected to a lower end of the inspection line 151 , and a lower portion of the transmitter 130 may be connected to the inspection device 140 . Accordingly, a signal may be transmitted from the inspection lines 151 to the inspection device 140 , or the inspection signal may be equally distributed to each of the inspection lines 151 . Since the transmitter 130 equally distributes the inspection signal to each of the inspection lines 151 , the magnitude of the inspection signal coupled from each of the antenna elements 110 through the inspection line 151 and the inspection probe 152 . may be in phase with .

The inspection probe 152 may be branched from the inspection line 151 . A plurality of inspection probes 152 may be provided, and the plurality of inspection probes 152 may be connected to each inspection line 151 . The inspection probe 152 may have an open end disposed within the antenna element 110 . For example, a second through hole extending in the front-rear direction may be provided on the rear surface of the main body 111 and the second substrate 113 , and the inspection probe 152 extends in the front-rear direction to form the main body 111 and the second substrate 113 . It may be inserted into the interior of the main body 111 through the second through hole of the second substrate 113 , and may be spaced apart from the first substrate 112 in the inner space of the main body 111 . The inspection probe 152 may be spaced apart from the feeding probe in the left and right directions and disposed in parallel.

At this time, since the inspection probe 152 is spaced apart from the first substrate 112 in the front-rear direction and disposed to face each other, the impedance from the radiation patch 114 and the first substrate 112 to the inspection probe 152 may be infinite. have. When the inspection probe 152 contacts the first substrate 112 , an impedance matching unit is additionally required in consideration of impedance matching of the inspection line 150 , but the inspection probe 152 is spaced apart from the first substrate 112 . Since the impedance is infinitely matched throughout the inspection line 150 , there is no need to add an impedance matching unit to the inspection line 150 . Therefore, the inspection line 150 can be miniaturized by designing it with a simple structure. In particular, even if the space in which the inspection line 150 can be installed becomes small due to the shortened interval between the antenna elements 110 , the inspection line 150 can be miniaturized, so that the inspection line 150 can be easily installed. have. Accordingly, it is possible to easily calculate the error of the array antenna device 100 including the antenna elements 110 having a narrow interval.

Also, as shown in FIG. 3 , the length L of the inspection probe 152 may be adjusted to a length of 1/2 of a wavelength calculated by the operating frequency of the array antenna device 100 . If the length L of the inspection probe 152 is greater than or less than half the length of the wavelength calculated by the operating frequency, the impedance matching of the entire inspection line 150 is different, and thus an impedance matching unit is additionally required. Accordingly, in order not to add an impedance matching unit, the length L of the inspection probe 152 may be adjusted to a length of 1/2 of the wavelength calculated as the operating frequency. The inspection probe 152 includes a second probe body 152a and a second insulator 152b.

The second probe body 152a may be formed in the form of a rod extending in the front-rear direction. The second probe body 152a is formed shorter in the front-rear direction than the first probe body 115a, so that one side (or rear end) is in contact with the second substrate 113, and the other side (or the front end) is the second probe body 152a. 1 may be spaced apart from the substrate 112 and disposed to face each other. Accordingly, a coupling action may occur between the second probe body 152a and the first substrate 112 .

The second insulator 152b is formed to surround a portion of the second probe body 152a to insulate between the second probe body 152a and the main body 111, and the other end of the second probe body 152a (or , front end) may be shorter than the length of the second probe body 152a to be exposed to the inner space of the body 111 . Accordingly, a coupling action between the second probe body 152a and the first substrate 112 may stably occur.

Meanwhile, as shown in FIG. 2 , the inspection line 151 may further include a resistance member 153 . Accordingly, one end (or lower end) of the inspection line 151 may be connected to the transmitter 130 , and the other end (or upper end) of the inspection line 151 may be connected to the resistance member 153 . When a plurality of inspection lines 151 are provided, the resistance member 153 may also be provided as many as the number of inspection lines 151 are provided to be connected to the other end of each inspection line 151 . Accordingly, the resistance member 153 can suppress or prevent a decrease in signal integrity by reducing a reflected wave due to an impedance mismatch at the end of the inspection line 151 .

In this way, the output signal is transmitted to the inspection device 140 using the inspection probe provided in the inspection line 150 , or the inspection signal is transferred to the antenna element 110 to quickly the antenna element 110 or the transceiver 120 . error can be measured. Accordingly, it is possible to easily perform calibration of the array antenna device 100 . In addition, since the structure of the inspection line 150 can be simplified and miniaturized, the inspection line 150 can be easily installed in a small space. Accordingly, even if the distance between the antenna elements 110 is narrowed, the error can be measured by installing the inspection line 150 .

4 is a flowchart illustrating an error correction method of an array antenna device according to an embodiment of the present invention. Hereinafter, an error correction method of an array antenna device according to an embodiment of the present invention will be described.

An error correction method of an array antenna apparatus according to an embodiment of the present invention is an error correction method of an array antenna apparatus including a plurality of antenna elements and a plurality of transceivers connected to each of the plurality of antenna elements. Referring to FIG. 4 , the error correction method outputs a reference signal to each of a plurality of antenna elements from a plurality of transceivers, and couples the reference signal on an inspection line connected to the plurality of antenna elements in an open-stub structure. A process of calculating the size and phase by ringing (S110), outputting an operation signal from a plurality of transceivers to each of a plurality of antenna elements while operating the array antenna device, and coupling the operation signal on an inspection line to calculate the size and phase Process (S120), the process of calculating an error by comparing the magnitude and phase of the reference signal and the operation signal (S130), and the process of correcting the error by changing the magnitude and phase of the signal output from each of the plurality of transceivers (S140) includes

In this case, the method of correcting the error of the array antenna device according to an embodiment of the present invention may be a method of correcting the error of the array antenna device having the structure shown in FIGS. 1 to 3 . Also, the error correction method of the array antenna apparatus according to an embodiment of the present invention may be performed when the array antenna apparatus is in a transmission mode.

First, a reference signal is output from a plurality of transceivers to each of a plurality of antenna elements, and a magnitude and a phase are calculated by coupling the reference signals on an inspection line connected to the plurality of antenna elements in an open stub structure (S110). That is, when the plurality of transceivers 120 outputs the reference signal to each of the plurality of antenna elements 110 , the reference signal output from the open end of the inspection probe 152 to the antenna element 110 may be coupled. . Accordingly, the inspection probe 152 may transmit the coupled reference signal through the inspection line 151 to the inspection device 140 , and the inspection device 140 may calculate and store the magnitude and phase of the received reference signal. have.

Then, while operating the array antenna device, the plurality of transceivers outputs the operation signal to each of the plurality of antenna elements, and the operation signal is coupled on the inspection line to calculate the magnitude and phase ( S120 ). That is, when the plurality of transceivers 120 output the operation signal to each of the plurality of antenna elements 110 , the operation signal output from the open end of the inspection probe 152 to the antenna element 110 can be coupled. . Accordingly, the inspection probe 152 may transmit the coupled reference signal through the inspection line 151 to the inspection device 140 , and the inspection device 140 may calculate the magnitude and phase of the received operating signal. .

Next, an error is calculated by comparing the magnitude and phase of the reference signal and the operation signal (S130). That is, the error can be calculated by subtracting the magnitude and phase of the operating signal from the magnitude and phase of the reference signal calculated and stored in advance in the checker 140 . Accordingly, it is possible to find the antenna element 110 or the transceiver 120 in which an error occurs due to a temperature rise or the like while operating the array antenna device 100 .

Then, the error is corrected by changing the magnitude and phase of the signal output from each of the plurality of transceivers (S140). That is, if the antenna element 110 or the transceiver 120 determined to have an error is found, the magnitude of the signal output from the corresponding transceiver 120 may be changed to reduce the error. However, the method for reducing the error is not limited thereto and may be various.

5 is a flowchart illustrating an error correction method of an array antenna device according to another embodiment of the present invention. Hereinafter, an error correction method of an array antenna device according to an embodiment of the present invention will be described.

An error correction method of an array antenna apparatus according to another embodiment of the present invention is an error correction method of an array antenna apparatus including a plurality of antenna elements and a plurality of transceivers connected to each of the plurality of antenna elements. Referring to FIG. 5 , the error correction method includes a process of generating an inspection signal ( S210 ), and an inspection signal is transmitted to each of a plurality of antenna elements through an inspection line connected to the plurality of antenna elements in an open-stub structure. A process of coupling to (S210), a process of calculating the magnitude and phase of the inspection signal coupled from each of the plurality of antenna elements in each of the plurality of transceivers (S220), the magnitude and phase of the inspection signal calculated by each of the plurality of transceivers a process of calculating an error by comparing them (S230); and correcting the error by adjusting the magnitude and phase of the signal received by each of the plurality of transceivers (S240).

In this case, the method for correcting the error of the array antenna apparatus according to another embodiment of the present invention may be a method of correcting the error of the array antenna apparatus having the structure shown in FIGS. 1 to 3 . Also, the error correction method of the array antenna apparatus according to another embodiment of the present invention may be performed when the array antenna apparatus is in a reception mode.

First, an inspection signal is generated (S210). That is, the inspector 140 may generate an inspection signal to be used to inspect the antenna element 110 and the transceiver 120 .

Next, the inspection signal is coupled to each of the plurality of antenna elements through inspection lines connected to the plurality of antenna elements in an open-stub structure (S210). At this time, since there are a plurality of antenna elements 110 , it is possible to distribute the inspection signal to each of the plurality of inspection lines to be the same. The inspection signal distributed to the inspection line 151 may be distributed to be identical to each of the inspection probes 152 . Accordingly, the open end of each of the plurality of inspection probes 152 may input the inspection signal to the antenna element 110 . That is, the check signal may be coupled from the antenna element 110 .

Next, the magnitude and phase of the check signal coupled from each of the plurality of antenna elements are calculated in each of the plurality of transceivers (S220). That is, the check signal coupled from the antenna element 110 is transmitted to the transceiver 120 connected to the corresponding antenna element 110 . Accordingly, it is possible to calculate the magnitude and phase of the inspection signal received from each of the transceivers 120 .

Next, an error is calculated by comparing the magnitude and phase of the inspection signal calculated from each of the plurality of transceivers ( S230 ). That is, since the same inspection signal is input to each of the antenna elements 110 , the magnitude and phase of the inspection signal calculated by each transceiver 120 should be the same. Therefore, when an inspection signal having a different magnitude and phase from other inspection signals is calculated in one transceiver 120, it can be determined that an error has occurred in the antenna element 110 or the transceiver 120 coupled to the inspection signal. have.

Then, the error is corrected by adjusting the magnitude and phase of the signal received by each of the plurality of transceivers (S240). That is, if the antenna element 110 or the transceiver 120 determined to have an error is found, the magnitude of the signal input to the corresponding transceiver 120 may be adjusted to reduce the error.

As such, although specific embodiments have been described in the detailed description of the present invention, various modifications are possible without departing from the scope of the present invention, and various combinations between the embodiments are possible. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims to be described below as well as the claims and equivalents.

100: array antenna device 110: antenna element
120: transceiver 130: transmitter
140: checker 150: check line
151: inspection line 152: inspection probe

Claims (12)

a plurality of antenna elements;
a plurality of transceivers connected to each of the plurality of antenna elements;
a checker for calculating magnitudes and phases of output signals respectively output from the plurality of transceivers to the plurality of antenna elements or for providing a check signal; and
A part of the output signal outputted to the antenna element is coupled and transmitted to the inspection machine, or the inspection signal is inputted to each of the plurality of antenna elements, and is connected to the plurality of antenna elements in an open-stub structure Including the inspection line that becomes
The inspection line is
an inspection line extending along the plurality of antenna elements; and
and an inspection probe branching from the inspection line and having an open end disposed within the antenna element. delete The method according to claim 1,
The antenna element is
a body having an internal space and having an open surface;
a first substrate installed on one surface of the main body to cover the inner space of the main body;
a second substrate installed on the other surface opposite to one surface of the main body;
a radiation patch installed on the surface of the first substrate; and
Array antenna device including a; feeding probe connected to the first substrate to feed the radiation patch. 4. The method of claim 3,
The inspection probe is
An array antenna device passing through the second substrate and the main body, spaced apart from the first substrate in an internal space of the main body, and disposed parallel to the feeding probe. 5. The method according to claim 4,
The inspection probe is
a probe body having one side in contact with the second substrate and the other side facing the first substrate; and
An insulator having a shorter length than the probe body, formed to surround a portion of the probe body to insulate between the probe body and the body, and extending from the probe body so that the other end of the probe body is exposed to the inner space of the body Array antenna device. The method according to claim 1,
The length of the inspection probe is,
An array antenna device that is adjusted to a length of 1/2 of a wavelength calculated by the operating frequency of the array antenna device. The method according to claim 1,
The plurality of antenna elements are arranged in a first direction and a second direction intersecting the first direction,
The inspection lines extend in the first direction and are provided in plurality and are spaced apart from each other in the second direction,
An arrangement further comprising a transmitter having one side connected to the inspection lines and the other side connected to the inspection machine so as to transmit an output signal from the inspection lines to the inspection machine or to distribute the inspection signal equally to each of the inspection lines antenna device. 8. The method of claim 7,
One end of the inspection line is connected to the transmitter,
The inspection line, the array antenna device further comprising a resistance member connected to the other end of the inspection line. An error correction method for an array antenna device having a plurality of antenna elements and a plurality of transceivers connected to each of the plurality of antenna elements, the method comprising:
A reference signal is output from the plurality of transceivers to each of the plurality of antenna elements, and the magnitude and phase are calculated by coupling the reference signals on an inspection line connected to the plurality of antenna elements in an open-stub structure. process;
outputting an operation signal from the plurality of transceivers to each of the plurality of antenna elements while operating the array antenna device, and coupling the operation signal on the inspection line to calculate magnitude and phase;
calculating an error by comparing magnitudes and phases of the reference signal and the operating signal; and
The process of correcting the error by changing the magnitude and phase of the signal output from each of the plurality of transceivers;
The inspection line includes a plurality of inspection probes having an open end disposed within the antenna element,
The process of coupling the reference signal, and the process of coupling the operation signal,
and coupling the signal output from the open end of the inspection probe to the antenna element. delete An error correction method for an array antenna device having a plurality of antenna elements and a plurality of transceivers connected to each of the plurality of antenna elements, the method comprising:
generating a check signal;
coupling the inspection signal to each of the plurality of antenna elements through an inspection line connected to the plurality of antenna elements in an open-stub structure;
calculating, in each of the plurality of transceivers, magnitudes and phases of check signals coupled from each of the plurality of antenna elements;
calculating an error by comparing magnitudes and phases of check signals calculated from each of the plurality of transceivers; and
The process of correcting the error by adjusting the magnitude and phase of the signal received by each of the plurality of transceivers;
The inspection line includes a plurality of inspection lines, and a plurality of inspection probes branching from each of the plurality of inspection lines and having an open end disposed in the antenna element,
The process of coupling the check signal to each of the plurality of antenna elements,
The process of distributing the inspection signal to each of the plurality of inspection lines to be the same; and
and inputting the inspection signal to an antenna element at an open end of each of the plurality of inspection probes. delete

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