JP2530876Y2 - Data transfer device for antenna control - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention relates to an antenna control data transfer device that transfers a control signal to a phase shifter control circuit that controls a phase shifter of an antenna.

[Prior Art] FIG. 7 is a configuration diagram of a conventional array antenna control data transfer device. In the figure, (2) is an antenna element for transmitting or receiving a radio wave, (3) is a phase shifter for changing the phase of a radio wave transmitted or received from the antenna element (2), and (4) is a phase shifter (3) (10) controls which phase control circuit (4ab) to (4fc) to transfer the phase data for controlling the phase change amount of the radio wave to be changed by the phase shifter control circuit. A data transfer control circuit, (11) is a phase shift data calculation circuit for calculating phase shift data, and (12) is commonly connected to the phase shifter control circuits (4ab) to (4fc) to transfer phase shift data. Clock line that supplies a clock signal for synchronizing the clock, (13ab)
To (13fc) are enable lines for supplying an enable signal to make each of the phase shifter control circuits (4ab) to (4fc) ready for phase shift data input, and (14) is a phase shifter control circuit (4ab) to (4)
fc) is a data line connected in common to supply phase shift data.

FIG. 8 is an internal configuration diagram of the phase shifter control circuit (4) of the conventional antenna control data transfer device. (5) is a phase shift data holding circuit for holding the phase shift data supplied from the data line (14).

FIG. 9 is a diagram showing a coordinate system of the aperture of the array antenna, where (1) is an antenna aperture composed of antenna elements (2ab) to (2fc), (17) is the X axis, and (18) is the Y axis. axis,
(19) is the Z axis, and (20) is the desired beam direction of the transmitted or received radio wave.

Next, the operation will be described. By changing the phase of the radio wave transmitted or received from each of the antenna elements (2ab) to (2fc) constituting the antenna aperture (1) according to the equation (1), the radio wave transmitted or received from the entire antenna aperture (1) Can be directed in a desired beam direction (20).

Ψ _ij = (2π / λ) · (x _i · X _B + y _j · Y _B ) ‥‥ (1) where X _B = sin θ · cos φ Y _B = sin θ · sin φ where i = a, b, ..., f, j = a, b,..., d, and _{ij ij} indicates a phase change amount to be given to the antenna element (2ij).
x _i and y _j can be the X and Y coordinates of the antenna element (2ij).
X _B and Y _B are the direction cosine of the desired beam direction (20),
θ and φ are the zenith angle of the desired beam direction (20) with respect to the Z axis (19) and the azimuth angle with respect to the X axis (17). Λ is a wavelength determined by the frequency of the radio wave.

In order to direct the radio wave in the desired beam direction (20), the phase shift data calculation circuit (11) uses each antenna element (2ab) to
The change amount of the phase of the radio wave of (2fc) is calculated according to the equation (1), and the calculation result is sent to the data transfer control circuit (10) as phase shift data. In the data transfer control circuit (10), enable lines (13ab) to (13ab) to (4ab) connected to the phase shifter control circuits (4ab) to (4fc) corresponding to the phase shift data sent from the phase shift data calculation circuit (11). 13fc), an enable signal is sent to one enable line (13ij), and at the same time, the phase-shifted data is transferred to the data line (14) in synchronization with the clock signal sent to the clock line (12). Phase shifter control circuit (4ab) to which enable lines (13ab) to (13fc), clock line (12) and data line (14) are connected
In (1) to (4fc), the phase shifter control circuit (4ij) to which the enable signal has been sent via the enable line (13ij) is synchronized with the clock signal from the clock line (12) and transmitted from the data line (14). Receive phase shift data. The phase shifter control circuit (4ij) which has received the phase shift data holds the transferred phase shift data in the phase shift data holding circuit (5) until the next new phase shift data is transferred. The phase shifter (3ij) operates according to the phase shift data held in the phase shift data holding circuit (5), and changes the radio wave transmitted or received from the antenna element (2ij) to the phase shift according to the phase shift data. Let it.

When the phase shift data calculated according to the equation (1) is transferred to the phase shifter control circuits (4ab) to (4fc) corresponding to the antenna elements (2ab) to (2fc) in this manner, each antenna element (2a
b) The phase shifter (3ab) to (3fc) connected to (2fc) changes the phase of the radio wave transmitted or received from each antenna element (2ab) to (2fc) as shown in equation (1). The beam of the radio wave transmitted or received from the antenna aperture (1) is directed to a desired beam direction (20).

[Problem to be Solved by the Invention] As described above, in the conventional data transfer device for antenna control, the phase shift data calculation circuit calculates the phase shift data corresponding to all the antenna elements (2) according to the equation (1). To calculate and sequentially transfer the phase-shifted data to each phase shifter control circuit (4), the time to calculate the phase-shifted data once is _Tc , and the time to transfer the phase-shifted data once is _Tt . In this case, to calculate all the phase shift data and transfer the phase shift data to all the phase shifter control circuits (4), the time T _all required for the expression (2) is _sufficient.
Is required.

T _all = N (T _c + T _t ) (2) where N is the number of antenna elements.

Accordingly, since the calculation time _Tc and the transfer time _{Tt of the} phase shift data per one antenna element (2) are constant, as the number of the antenna elements (2) increases, the phase shift data increases in proportion thereto. There is a problem that the time T _all before calculating and transferring is increased.

Also, the number of enable lines (13) required is equal to the number of the antenna elements (2), and the more the number of the antenna elements (2) increases, the more the input / output from the data transfer control circuit (10) is performed. There is a problem that the number of signals increases.

This invention was made in order to solve the above-mentioned problem. Even if the number of antenna elements increases, the time T _all for calculating and transferring the phase shift data becomes smaller than the proportional increase.
That is, as the number of antenna elements increases, the total of the calculation time and the transfer time of the phase shift data per antenna element decreases, and as the number of antenna elements increases, the antenna element 1 An object of the present invention is to provide an antenna control data transfer device in which the number of signals input / output from a data transfer control circuit per unit is reduced.

[Means for Solving the Problems] The antenna control data transfer device according to the present invention is:
For the array of antenna apertures, the phase shifter control circuit whose absolute value of the X coordinate was connected to the common antenna element was connected by the same X data line, and the absolute value of the Y coordinate was connected to the common antenna element. The phase shifter control circuit is connected by the same Y data line, and the two types of data lines of the X data line and the Y data line can be independently connected to the phase shifter control circuit. An adder / subtractor circuit and a code data holding circuit for the X and Y coordinates are provided in the device control circuit.

[Operation] In the present invention, a phase shifter control circuit connected to an antenna element having a common absolute value of the X coordinate is connected by the same X data line to the arrangement of the antenna elements on the antenna aperture. The X coordinate component data of the phase shift data represented by the equation (1) can be transferred in common from the X data line to a phase shifter control circuit connected to an antenna element having a common absolute value. Similarly, in order to connect the phase shifter control circuit, whose absolute value of the Y coordinate is connected to the common antenna element, with the same Y data line, the Y coordinate component data of the phase shift data shown in Expression (1)
Data can be transferred in common from the data line to the phase shifter control circuit connected to the antenna element of the common Y coordinate.

The X coordinate component data and the Y coordinate component data transferred to the phase shifter control circuit are the X coordinate component data output from the code data holding circuit.
In the addition / subtraction circuit, the same sign as the sign of the coordinate is given in accordance with the sign and the sign data of the Y coordinate. Thereafter, the X coordinate component data and the Y coordinate component data are added. This gives
The phase shift data represented by the equation (1) can be obtained.

In this case, the number of calculations and the number of transfers need only be half the number of the X and Y coordinates of the antenna element, and only addition in the phase shifter control circuit. Further, the calculation of the X component data and the Y component data of the phase shift data requires about half the calculation amount of the calculation of the equation (1). Therefore, as the number of antenna elements increases in common coordinates, the calculation time and transfer time of phase shift data per antenna element can be reduced.

Also, there is no need for an enable line corresponding to each phase shifter control circuit, and since the number of X data lines and Y data lines is each half the number of X coordinates and Y coordinates, many absolute values are used for common coordinates. As the number of antenna elements increases, the number of signals input / output from the data transfer control circuit per antenna element can be reduced.

FIG. 1 is a block diagram showing an embodiment of the present invention.
In the figure, (2), (3), (4), (10), (1
1) and (12) are the same or equivalent parts as in the past. (1
5a) to (15c) are commonly connected to the phase shifter control circuits (4ab) to (4fc) connected to the antenna elements (2ab) to (2fc) whose absolute values are located at the common X coordinate, and The X data lines (16a) to (16b) for supplying the X component data of the phase shift data specifying the amount of change are connected to the antenna elements (2ab) to (2fc) whose absolute values are located at the common Y coordinate. These are Y data lines that are commonly connected to the phase shifter control circuits (4ab) to (4fc) and supply Y component data of phase shift data that specifies the amount of phase change.

FIG. 2 is an internal configuration diagram of the phase shifter control circuit (4) of one embodiment of the present invention. In the figure, (5) is the same as or equivalent to the conventional one. (6) provides a sign to the X component data and the Y component data based on the sign data of the X coordinate and the Y coordinate, respectively, to the X component data and the Y component data of the phase shift data. An add / subtract circuit for adding the component data to obtain phase shift data, and (7) is a code data holding circuit for holding the code data of the X coordinate and the Y coordinate.

The operation of the antenna control data transfer device configured as described above will be described. Each antenna element (2ab) ~
By changing the phase of the radio wave transmitted or received from (2fc) as shown in equation (3), the antenna element (2ab)-
(2fc) The beam of the radio wave transmitted or received from the whole (2fc) can be directed to the desired beam direction (20). However, the expression (3) is obtained by expanding the expression (1), and the expression similar to the first term of the expression (3) is expressed by the expression (4), and the second term is expressed by the expression (5).

Ψ _ij = (2π / λ) · x _i · X _B + (2π / λ) · y _i · Y _B = Ψ _i + Ψ _j (3) Ψ _i = (2π / λ) · | x _i | · X _B … (4) Ψ _j = (2π / λ) · | y _i | · Y _B …… (5) where X _B = sin θ · cos φ Y _B = sin θ · sin φ where i = a, b, .., F, j = a, b,..., D, and Ψ _ij indicates a phase change amount to be given to the antenna element (2ij). x _i , y
_j is the X and Y coordinates of the antenna element (2ij). X _B , Y
_B is the direction cosine of the desired beam direction (20), θ,
φ is the zenith angle of the desired beam direction (20) with respect to the Z axis (19) and the azimuth angle with respect to the X axis (17). Λ is a wavelength determined by the frequency of the radio wave.

In order to direct the radio wave in the desired beam direction (20), the phase shift data calculation circuit (11) further calculates the X component data Ψ _i of the phase shift data of each X coordinate having a common absolute value by the equation (4). Y component data of phase shift data of each Y coordinate having a common value
_i is calculated by equation (5). Then, each calculation result is sent to the data transfer control circuit (10). The data transfer control circuit (10) calculates the X of the phase shift data of each X coordinate having a common absolute value.
X data lines component data [psi _i and the absolute value since everything is Y-component data [psi _i the phase data common for each Y coordinate, the absolute value corresponds to the X component data [psi _i common each X coordinate phase data In (15a) to (15c), the Y component data Ψ _j of the phase shift data of each Y coordinate having a common absolute value is assigned to the corresponding Y data line (16a) to (16b) and the clock line (12).
And transferred to the phase shifter control circuits (4ab) to (4fc) in synchronization with the clock signal supplied to.

Then, in each of the phase shifter control circuits (4ab) to (4fc), the X component data Ψ _i and Y of the phase shift data of each X coordinate having the common absolute value transferred from the X data lines (15a) to (15c) are used. The Y component data Ψ _j of the phase shift data of each Y coordinate having the common absolute value transferred from the data lines (16a) to (16b) is converted into the X coordinate and the Y coordinate stored in the code data holding circuit (7) in advance. the code data in accordance with the respective [psi _i and [psi _j gives the sign similar to the sign of the coordinates in the addition and subtraction circuit, which was added by adder circuit (6), the phase shift data [psi represented by (3)
_ij is calculated. The phase shift data _{ij ij} is held in the phase shift data holding circuit (5) until the next new phase shift data Ψ _ij is calculated by the addition / subtraction circuit. Then, in accordance with the phase shift data held in the phase shift data holding circuit (5), the phase shifter (3a)
b) to (3fc) are activated and the antenna elements (2ab) to (2fc)
To change the phase of the radio wave transmitted or received to the phase according to the phase shift data.

As described above, the X component data Ψ _j of the phase shift data of each Y coordinate whose absolute value is common to the X component data Ψ _i of the phase shift data of each X coordinate is converted into the X data lines (15a) to (15c). , Y data lines (16a) to (16b), and is transferred to each of the phase shifter control circuits (4ab) to (4fc).
b) a ~ (4fc) in the encoded data holding circuit (7), respectively [psi _i and [psi _j given code in the addition and subtraction circuit in accordance with the code data stored in the phase shift data added by adder circuit (6) [psi _{If ij} is calculated, each antenna element (2ab)-(2fc)
The phase shifters (3ab) to (3fc) corresponding to the above change the phase of the radio wave transmitted or received from each of the antenna elements (2ab) to (2fc) according to the equation (3).
b) The beam of the radio wave transmitted or received from (2fc) as a whole is directed to the desired beam direction (20).

According to the present invention, the calculation of equation (4) is performed three times,
The calculation of the formula (5) is performed twice and each data transfer is performed five times, and the calculation of the formula (1) of the conventional antenna control data transfer device is performed 12 times and the number of transfers is reduced to 12 times. In addition, since the expression (4) and the expression (5) require half the calculation amount of the expression (1), the calculation time is further reduced by about half.

In general, in an antenna symmetrical with respect to the origin O on the XY coordinates as shown in FIG. 9, the arrangement of the antenna elements (2) is m rows and n columns, and the antenna element (2) is m × n. / 2 in the case of total T _all the computation time and transfer time of this invention is represented by approximately (6).

T _all = ((m + n) / 2) · (T _c / 2 + T _t ) (6) where T _c / 2 is one calculation time of the equations (4) and (5), and The calculation time _Tc of equation (1) for the antenna control data transfer device of FIG. _Tt is one transfer time of X component data and Y component data of each phase shift data.

Therefore, the total T ₁ of the average computation time and transfer time per one antenna element (2) is represented by equation (7).

T ₁ = ((m + n) / 2) / (m × n / 2)) · (T _c / 2 + T _t ) (7) As can be seen from equation (7), the number of antenna elements (2) has increased. In this case, the increase amount of m × n / 2 is larger than the increase amount of (m + n) / 2, so that as the number of antenna elements (2) increases, the calculation time per antenna element (2) increases. sum T ₁ of the transfer time is reduced.

Similarly, according to the present invention, the number of lines output from the data transfer control device (10) is equal to the number of clock lines (1).
2) is one, X data line (15) is three, and Y data line (16) is two, which is a total of six. In the conventional antenna control data transfer device, the clock line (12) is one. Book,
The number of enable lines (13) is 12 and the number of data lines (14) is one, which is smaller than a total of 14 lines.

In general, in an antenna symmetrical with respect to the origin O on the XY coordinates as shown in FIG. 9, the arrangement of the antenna elements (2) is m rows and n columns, and the antenna element (2) is m × n. According to the present invention, when the number of X data lines is 15, the number of lines output from the data transfer control device (10) is m / 2 for the X data lines (15),
The number of Y data lines (16) is n / 2, and the total is (m + n) / 2 + the number of clock lines (12). As you can see from the above,
When the number of antenna elements (2) increases, the number of antenna elements (2), m + n /, is greater than the number of lines (m + n) / 2 + the number of clock lines (12) output from the data transfer control device (10). Since the increase amount of 2 is larger, as the number of antenna elements (2) increases, the number of signals input / output from the data transfer control device (10) per antenna element decreases.

Next, as shown in FIG. 3, in addition to the phase shift data holding circuit (5), the addition / subtraction circuit (6), the sign data holding circuit (7), a correction data holding circuit ( 8) will be described. In this case, the correction data holding circuit (8) holds the data for correcting the variation in the phase of the radio wave due to the variation in the electrical length of the transmission system and the reception system of each of the antenna elements (2ab) to (2fc) as the correction data. X
The X component data Ψ _i of the phase shift data of each X coordinate having a common absolute value from the data lines (15a) to (15c) is converted into a code in the addition / subtraction circuit according to the code data held by the code data holding circuit (7). Given Ψ _i and Y data line (16a)
~ Absolute value from (16b) gives the sign in addition-subtraction circuit in accordance with the held code data Y component data [psi _j code data holding circuit phase shift data common for each Y-coordinate (7) Ψ _j
The phase shift data is calculated by adding the correction data held in the correction data holding circuit (8) and the correction data holding circuit (8), so that the transmission system and the reception system of each antenna element (2ab) to (2fc) are calculated. The effect is obtained that the variation in the phase of the radio wave due to the variation in the electrical length can be corrected.

Next, as shown in FIG. 5, in addition to the phase shift data holding circuit (5), the addition / subtraction circuit (6), the sign data holding circuit (7), an input / output control circuit inside the phase shifter control circuit (4). The case where (9) is provided will be described. In this case, the phase shifter control circuits (4ab) to (4fc) provide the X component data Ψ _{i of the} phase shift data of each X coordinate having the same absolute value from the X data lines (15a) to (15c) and the Y data An identification signal is added before or after the data of the Y component data Ψ _j of the phase shift data of each Y coordinate having a common absolute value from the lines (16a) to (16b), and the same X value as shown in FIG. An enable line (13) for distinguishing the two phase shifter control circuits (4) to which the data lines (15a) to (15c) and the Y data lines (16a) to (16b) are connected.
By providing a) to (13b), X component data Ψ _i of phase shift data of each X coordinate having a common absolute value and Y component data Ψ _j of phase shift data of each Y coordinate having a common absolute value are obtained. In addition to inputting, the phase shift data and code data held in the phase shift data holding circuit (5) and the code data holding circuit (7) by the input / output control circuit (9) are transferred to the X data lines (15a) to
(15c) and one or both of the Y data lines (16a) to (16b) can be output to the outside of the phase shifter control circuits (4ba) to (4fc). (4a
b) ~ only certain one of the (4fc), Y components of the phase data of the absolute value and the X component data [psi _i the phase data of the absolute value common for each X coordinate common each Y-coordinate Since data Ψ _j and code data can be input from both or one of the X data lines (15a) to (15c) and the Y data lines (16a) to (16b), each phase shifter control circuit (4ab) -(4fc) can be checked whether the function is operating normally, and the phase shifter control circuits (4ab)-(4f
c) or replacement of phase shifters (3ab) to (3fc) due to failure,
The effect of simplifying the exchange of the antenna elements (2ab) to (2fc) to make the variation in the amplitude of the transmission system and the reception system closer to the ideal state can be obtained.

Next, as shown in FIG. 6, in addition to the phase shift data holding circuit (5), the addition / subtraction circuit (6), and the sign data holding circuit (7), a correction data holding circuit ( 8) and the case where the input / output control circuit (9) is provided will be described.

In this case, the correction data holding circuit (8) holds the data for correcting the variation in the phase of the radio wave due to the variation in the electrical length of the transmission system and the reception system of each of the antenna elements (2ab) to (2fc) as the correction data. X data line (15a)-(1
The X component data Ψ _i of the phase shift data of each X coordinate having the common absolute value from 5c) is given a sign in the addition / subtraction circuit according to the sign data held by the sign data holding circuit (7) to be Ψ _i. , Y data lines (16a) to (16
b) The Y component data Ψ _j of the phase shift data of each Y coordinate is given a sign in the addition / subtraction circuit in accordance with the sign data held by the sign data holding circuit (7) to be Ψ _j , and the correction data holding circuit ( The phase shift data is calculated by adding the correction data held in 8), so that each antenna element (2a
b) It is possible to correct the variation of the phase of the radio wave due to the variation of the electrical length of the transmission system and the reception system of (2fc).

Further, the phase shifter control circuits (4ab) to (4fc) provide X component data Ψ _{i of} phase shift data of each X coordinate having a common absolute value from the X data lines (15a) to (15c) and a Y data line ( 16a) ~
An identification signal is added before or after the data of the Y component data 相_j of the phase shift data of each Y coordinate having the common absolute value from (16b), and the same X data line (15a) as shown in FIG. By providing the enable lines (13a) to (13b) for distinguishing the two phase shifter control circuits (4) to which the (15c) and Y data lines (16a) to (16b) are connected, X component data Ψ _{i of} phase shift data of each X coordinate having a common value
And the Y component data Ψ _j of the phase shift data of each Y coordinate having a common absolute value, as well as an input / output control circuit (9).
The phase shift data, code data and correction data held in the phase shift data holding circuit (5), the code data holding circuit (7) and the correction data holding circuit (8) are transferred to the X data lines (15a) to (15c). ) And Y data lines (16a) to (16b)
Phase shifter control circuit from one or both of (4ab)
To (4fc) to the outside, and the X value of the phase shift data of each X coordinate having an absolute value common to only a specific one of the phase shifter control circuits (4ab) to (4fc). Component data {Y component data of phase shift data of each Y coordinate having the same absolute value as _i }
_j and code data are transferred to X data lines (15a) to (15c) and Y
Each phase shifter control circuit (4ab) can be input from both or either of the data lines (16a) to (16b)
-(4fc) can be checked whether the function is normal, and the phase shifter control circuits (4ab)-(4fc) and phase shifters (3ab)-(3fc) with different code data and correction data
Replacement due to failure, and each antenna element (2ab)-(2f
It is easy to replace the antennas (2ab) to (2fc) with the electrical length of each antenna element (2ab) to (2fc) by easily changing the amplitudes of the transmission system and the reception system up to c) to approximate the ideal state. Therefore, even when the variation in the phase shift of the radio wave changes, the correction data for correcting the new variation can be held in the correction data holding circuit (8), so that the variation can be corrected. Can be

In the above embodiment, the antenna elements (2) are arranged on the X and Y coordinate planes, and the X component data Ψ _i of the phase shift data of each X coordinate having a common absolute value is used as an X data line and the common absolute value is used. The case where the Y component data Ψ _j of the phase shift data of each Y coordinate is the Y data line has been described. However, the antenna element (2) is arranged on another coordinate plane, and the absolute value of one coordinate is a common phase shift. The same effect can be obtained when one component data is connected to one data line, and the other component data of the phase shift data having the same absolute value of the other coordinate is connected to the other data line.

In the above embodiment, a total of 12 antenna elements (1) having 4 rows and 6 columns have been described. However, an arbitrary number of rows × an arbitrary number of columns of an arbitrary number of antenna elements (1), circular antennas, In the case of the antenna element (1) arranged in the same manner as in the above embodiment, the same effect is obtained.

In the above embodiment, the case where the antenna elements (1) are arranged in a rectangular shape has been described. However, the antenna elements (1) of an arbitrary number of rows × an arbitrary number of columns are thinned out regularly or irregularly. The same effect is obtained in the case of the arranged array.

[Effects of the Invention] As described above, according to the present invention, the phase shifter control circuit that controls the phase shifter connected to the common antenna element with the absolute value of the X coordinate is the same for the arrangement of the antenna elements. The phase shifter control circuit for connecting the X data lines and controlling the phase shifter connected to the common antenna element with the absolute value of the Y coordinate
The phase shifter control circuit enables the two types of data lines, the X data line and the Y data line, to be connected independently of each other, and further includes an addition / subtraction circuit and an X coordinate in the phase shifter control circuit. , Y-coordinate data holding circuit, the phase-shift data can be divided into X-component data and Y-component data, and the calculation can be performed. It can be transferred in common to a phase shifter control circuit that controls the phase shifter connected to the element, and the X component data and the Y component data in the phase shifter control circuit have the same code as the X coordinate and the Y coordinate. , And adding the phase shift data, the phase shift data can be calculated. As the number of antenna elements increases, the sum of the calculation time and the transfer time of the phase shift data per antenna element can be reduced. , The larger the number of antenna elements is An increase, there is an effect of reducing the number of signals input to and output from the data transfer control circuit of per antenna element.

[Brief description of the drawings]

FIG. 1 and FIG. 4 are configuration diagrams showing one embodiment of the present invention.
2, 3, 5, and 6 are internal configuration diagrams of a phase shifter control circuit according to an embodiment of the present invention, FIG. 7 is a configuration diagram of a conventional device, and FIG. FIG. 9 is a diagram showing the internal configuration of a phase shift control circuit of a conventional device, and FIG. 9 shows an embodiment of the present invention and a coordinate system of an antenna aperture commonly used in the conventional device. In the figure, (1) is an antenna aperture, (2) is an antenna element, (3) is a phase shifter, (4) is a phase shifter control circuit, (5)
Is a phase shift data holding circuit, (6) is an addition / subtraction circuit, (7) is a sign data holding circuit, (8) is a correction data holding circuit,
(9) is an input / output control circuit, (10) is a data transfer control circuit, (11) is a phase shift data calculation circuit, (12) is a clock line, (13) is an enable line, (14) is a data line, 15) is the X data line, (16) is the Y data line, (17) is the X axis, (18) is the Y axis, (19) is the Z axis, (2)
0) is the desired beam direction. The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (2)

(57) [Scope of request for utility model registration] 1. An array antenna having a point symmetry with respect to an origin O on an XY coordinate system or an array on an opening surface similar thereto, wherein an absolute value of an X coordinate on an antenna opening surface is transferred to a common antenna element. A phase shifter control circuit for controlling a phase shifter is connected to the same X data line, and a phase shifter control circuit for controlling a phase shifter connected to a common antenna element with an absolute value of Y coordinate is connected to the same Y data line. And the phase shifter control circuit is connected to the X data line and the Y data line.
Data lines can be connected independently of each other, and an adder / subtractor circuit, a sign data holding circuit and a phase shift data holding circuit are provided in the phase shifter control circuit, and the absolute value transferred from the X data line is common. The X component data of the phase shift data of each X coordinate and the Y component data of the phase shift data of each Y coordinate having the common absolute value transferred from the Y data line are held in advance in the code data holding circuit. The same sign as the sign of the coordinate is given in the adder / subtractor according to the sign data of the X coordinate and the Y coordinate, and the sign is added by the adder / subtractor to calculate the phase shift data. An antenna control data transfer device held by a data holding circuit. 2. A correction data holding circuit for holding, as correction data, data for correcting a variation in a phase of a radio wave due to a variation in an electrical length of a transmission system and a reception system of each antenna element in the phase shifter control circuit. 2. The antenna control data transfer device according to claim 1, wherein the adder / subtractor circuit calculates the phase shift data by adding the correction data to the X component data and the Y component data each given a code.