JPH02184102A - Signal transfer device for antenna control - Google Patents

Abstract

PURPOSE:To prevent a change in a phase shift signal due to electromagnetic interference by transferring a phase shift single between a light emitting device and a light receiving device by means of space transfer of an optical signal. CONSTITUTION:Light emitting devices 5a-5c receiving an optical signal and converting it into an electric signal are provided to phase control circuits 2a-2c controlling the phase of a radio wave sent/received from antenna apertures 1a-1c. Moreover, a light emitting device 4 converting an electric signal from a signal generating circuit 3 generating a phase shift signal transferred to the phase control circuits 2a-2c is provided to the transfer device. Then the transfer of a phase shift signal between the light emitting device 4 and the light emitting devices 5a-5c is implemented by spatial transfer of an optical signal. The transfer of the phase shift signal from the signal generating circuit 3 to the phase shift control circuits 2a-2c is implemented through the spatial transfer using the optical signal to eliminate the need for the direct connection between the signal generating circuit 3 and the phase control circuits 2a-2c thereby preventing the change in the phase shift signal between the signal generating circuit 3 and the phase control circuits 2a-2c due to electromagnetic interference is prevented.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a signal transfer device for antenna control that transfers a phase shift signal to a phase shift control circuit that controls the phase of radio waves transmitted and received from an antenna aperture. It is related to.

[Conventional technology]

FIG. 4 is a configuration diagram of a conventional antenna control signal transfer device. In the figure, (la) to (IG) are antenna apertures that transmit and receive radio waves, and (2a) to (2c) are phase shifts that control the phase of radio waves that are transmitted and received from antenna apertures (1B) to (1c). A control circuit, (3) a signal generation circuit that generates a phase shift signal indicating the phase shift amount of radio waves to be transmitted/received, (5a) to (6c) signal generation circuits (receiving the phase shift signal from 31); , a signal processing circuit that performs processing according to a phase shift signal, (7g) to (IG) are phase shifts δ and αQ that change the phase of radio waves to be transmitted and received according to a phase shift signal, and αQ is a signal processing circuit that performs processing according to a phase shift signal. Phase control circuit (2a) to (2c)
It is a line that transfers phase-shifted electrical signals.

Next, the operation will be explained. Antenna aperture (1a) ~ (
lc) The beam direction of the '+' wave transmitted and received from the whole is.

By controlling the phase of radio waves transmitted and received from each antenna aperture (1a) to (1c), it can be changed arbitrarily. Therefore, the signal generation circuit (31 is the antenna aperture (
1a) to (1c) Each antenna aperture (1a) to (1G) for the desired beam direction of the radio waves transmitted and received from the whole
Calculate the phase of the radio waves to be sent and received from , and use these as phase-shifted signals via line a.

It is transferred as an electrical signal to each phase shift control circuit (2a) to (2G). In each phase shift control circuit (2a) to (2G).

Signal processing circuits (6m) to (6o) receive the phase shift signal transferred as an electrical signal, and control phase shift 3 (7a) to (1G) according to this phase shift signal. and.

The phase shift δ(1a) to (IC) is
Since the phase of radio waves transmitted and received from ~(lc) is changed according to the phase shift signal, the beam of radio waves transmitted and received from the entire antenna apertures (la) to (lc) is directed in the desired direction.

[Problem to be solved by the invention]

As mentioned above, in the conventional antenna-controlled itt signal transfer device, the signal generation circuit (3) and the phase shift control circuits (2a) to (2)
Since the transfer of the phase shift signal between G) was performed using an electric signal via the line σ1, it is necessary to directly connect the signal generation circuit +31 and the phase shift control circuits (2a) to (2C) with the line Ql. In addition, the signal generation circuit +3) and the phase shift control circuit (2
There were problems such as the phase shift signal changing due to electromagnetic interference on line a between a) and (2G).

This invention was made to solve the above problems, and includes a signal generation circuit: 3) and a phase shift control circuit (2a).
) to (2c) does not need to be directly connected, and furthermore,
Signal generation circuit (31 and phase shift control circuits (2a) to (2c)
An object of the present invention is to obtain a signal transfer device for antenna control in which a phase shift signal does not change due to electromagnetic interference between the antennas.

[Means to solve the problem]

An antenna control signal transfer device according to the present invention.

Phase shift control circuits (2a) to (2C) that control the phase of radio waves transmitted and received from antenna apertures (1a) to (IC), and optical receivers (5a) to 2C that receive optical signals and convert them into electrical signals.
(5c), the phase shift control circuit (2a) to (2c)
A signal generation circuit that generates a phase shift signal to be transferred to +3) is provided with a light emitter 14) that converts an electrical signal from the 3) into an optical signal, and further includes an h2 light emitter 141 and a light receiver 28 (5a) to (5c).
The signal transfer of the phase-shifted signal between the two is performed by spatial transfer of the optical signal.

[For production]

In this invention, since the phase shift signal is transferred from the signal generation circuit (3) to the phase shift control circuits (26) to (2G) by spatial transfer using an optical signal, the signal generation circuit (31
and phase shift side i circuits (2a) to (2c) directly.

There is no need for connection, and furthermore, the phase shift signal does not change due to electromagnetic interference between the signal generation circuit 13+ and the phase shift control circuits (2a) to (2G).

〔Example〕

FIG. 1 shows an embodiment of the present invention. In the figure,
(1m) to (1G) are antenna apertures for transmitting and receiving radio waves, (2a) to (2c) are antenna apertures (1a)
~(1G) is a phase shift control circuit that controls the phase of radio waves transmitted and received; +3) indicates the amount of control over the phase of radio waves transmitted and received; and a signal generation circuit that generates phase 1δ signal; (
4) is a signal generation circuit (light emitting a that converts the phase shift signal generated by 31 from an electrical signal to an optical signal, (5a) to (5c)
) is light receiving B which converts the phase shifted optical signal from the light emitter (4) into a phase shifted electrical signal, and (6a) to (6C) are light receiving! ! (5a) - A signal processing circuit that receives a phase shift signal from (5G) and performs processing according to the phase shift signal, (7a) -
(1G) is a phase shift group that changes the phase of transmitted and received radio waves.

The operation of the antenna-based O signal transfer device constructed as described above will be described. Antenna aperture (1a) to (1
c) Withdrawal from the whole The beam direction of the received radio waves can be arbitrarily changed by controlling the phase of the radio waves transmitted and received from each antenna aperture (1a) to (IC). Therefore, the signal processing circuit 31 operates from the antenna opening (1st) to
(IC) Calculates the phase of radio waves transmitted/received from each antenna aperture (1a) to (1c) with respect to the desired beam direction of the radio waves transmitted/received from the entire IC, and uses these as a phase-shifted signal of the electrical signal.

The light is transmitted to δ(4). The light emitter (4) converts the electric signal transfer signal into an optical phase shift signal, and the phase shift control circuit (2
a) Space rotation is performed toward (2G). The phase shift M1 circle circuits (2a) to (2G) transfer the phase shift No. 13 of the light No. 11 spatially transferred from the 1 emitter (4) to the light receivers (5a) to (
5G). Light reception 2f (Sa) ~ (5C) is
Converts a phase-shifted optical signal into a phase-shifted electrical signal.

According to this phase shift signal, the signal processing circuits (6a) to (6C
) controls the phase shift n<ra>~(7C). The phase shifters (1a) to (IC) are connected to each antenna aperture (1a) to
(1G), the phase of the radio waves to be transmitted and received is changed according to the phase shift signal, so the beam of radio waves transmitted and received from the entire antenna aperture (1a) to (IC) is directed in the desired direction. .

As described above, the phase shift signal of the electrical signal from the signal generation circuit (3) is converted into the phase shift signal of the optical signal by the light emission 514+, and the phase shift signal of the optical signal is spatially transferred, and the phase shift signal of the optical signal is transferred to the phase shift control circuit. (2
a) - (2c) light reception n (5a) - (5C)
There is no need to directly connect between a) to (2c), and since the phase shift signal of the optical signal is used, there is no need to directly connect between the signal generation circuit (3) and the phase shift control circuit (2a) to (2G). The phase shift signal will not change due to electromagnetic interference.

Next, as shown in Figure 2, 1 emitter (4) and light receiver n (5a)
A case will be described in which the optical path through which the optical signal between (5G) and (5G) is spatially transferred is configured with two reflecting plates (8). In this case, the optical signal is transferred to each phase shift control circuit (2m) to (2G) while being sequentially reflected by the two reflecting plates (8), so the optical signal from the two light emitters (4) is Phase shift control circuit (2a)
Since it is possible to input from the side to ~(2G), the effect that the entire configuration can be made thinner can be obtained.

Next, as shown in FIG. 3, phase shift control circuits (2a) to (2G
) is also equipped with one light emitting device (4a) to (4G), and further receives optical signals from the light emitting device a (4a) to (4G),
A light receiver (5) that converts into an electrical signal, and this light receiver (5)
An external signal processing circuit (9;
The case where 6i5 is added will be explained. in this case.

The operating status of each phase shift control circuit (2a) to (2G) can be transferred to an external signal processing circuit (9) by putting it on an optical signal, so that each phase shift control circuit (2a) to (2C) can This has the effect of being able to confirm whether or not it is operating normally.

In addition, in the above embodiment, the antenna aperture (1a) to (IC
) are arranged linearly, but the same effect can be obtained even when they are arranged planarly or curvedly.

In addition, in the above embodiment, the antenna aperture (1 day) to (1G
) and phase shift control circuits (2nd) to (2G) have been described in the case of three sets, but the same effect can be obtained in the case of any arbitrary set.

Also, for multiple signals, 1
Similar effects can be obtained when a light emitter and a light receiver tQ are provided.

Further, in the case of a plurality of signals, the same effect can be obtained when a multiplexer that combines a plurality of optical signals or a demultiplexer that separates a group of optical signals is used.

Further, in the above embodiment, the case where two reflecting plates (8) are used is described, but the same effect can be obtained when a plurality of reflecting plates (8) are combined.

In addition, there are two or more layers in the optical path of the optical signal from the phase shift control circuits (2a) to (2c) to the external signal processing circuit (9).

A similar effect can be obtained when a plurality of reflecting plates (8) are combined.

〔Effect of the invention〕

As described above, according to the present invention, a phase shift control circuit that controls the phase of radio waves transmitted and received from an antenna aperture is provided with a light receiver that receives an optical signal and converts it into an electric signal, It includes a light emitter that converts an electrical signal from a signal generation circuit that generates a phase shift signal to be transferred to a circuit into an optical signal, and further includes a spatial circuit for transmitting the phase shift signal between the light emitter and the light receiver. Since this is done by transfer, there is no need to directly connect the signal generation circuit and the phase shift control circuit.

Furthermore, there is an effect that the phase shift signal does not change due to electromagnetic interference between the signal generation circuit and the phase shift control circuit.

[Brief explanation of the drawing]

Figures 1, 2, and 3 show an embodiment of the present invention.
/A6. FIG. 4 is a configuration diagram of a conventional device. In the figure, (la) to (1c) are antenna apertures. (2nd) - (2G) are phase shift control circuits, (3) are signal generation circuits, 14+, (4a) - (4C) are light emission "J3
+ +511 (5a) ~ (5G) is light receiving a, +
81 is a reflecting plate. In addition, in FIG. 1, the same reference numerals indicate the same or corresponding parts. Figure 2 '#phasefIlla'EJro

Claims (3)

[Claims] (1) A phase shift control circuit that controls the phase of radio waves transmitted and received from the antenna aperture is equipped with an optical receiver that receives an optical signal and converts it into an electrical signal, and the phase shift control circuit that controls the phase of radio waves transmitted and received from the antenna aperture is equipped with a photoreceiver that receives the optical signal and converts it into an electrical signal, and transfers the phase shift signal to the phase shift control circuit. It is characterized by comprising a light emitter that converts an electric signal generated from a signal generation circuit into an optical signal, and further comprising a signal transfer of a phase shift signal between the light emitter and the light receiver by spatial rotation transfer of the optical signal. Signal transfer device for antenna control. (2) A phase shift control circuit that controls the phase of radio waves transmitted and received from the antenna aperture is equipped with an optical receiver that receives optical signals and converts them into electrical signals, and the phase shift control circuit that controls the phase of radio waves transmitted and received from the antenna aperture is equipped with a light receiver that receives optical signals and converts them into electrical signals. It is equipped with a light emitter that converts the electric signal generated from the signal generation circuit into an optical signal, and an optical path through which the optical signal is transferred is configured with two reflecting plates, and a phase shift signal between the light emitter and the light receiver is provided. 1. A signal transfer device for antenna control, characterized in that signal transfer is performed by spatial transfer of optical signals. (3) A phase shift control circuit that controls the phase of radio waves transmitted and received from the antenna aperture is equipped with an optical receiver that receives an optical signal and converts it into an electrical signal, and the phase shift control circuit that controls the phase of radio waves transmitted and received from the antenna aperture is equipped with a photoreceiver that receives the optical signal and converts it into an electrical signal, and transmits the phase shift signal to the phase shift control circuit. A light receiving device includes a light emitter that converts an electrical signal generated from the signal generation circuit into an optical signal, and further includes a light emitter in the phase shift control circuit, and receives an optical signal from the light emitter and converts it into an electrical signal. 1. A signal transfer device for antenna control, comprising: a light emitter; and an external signal processing circuit for processing electrical signals converted by the light receiver, and spatially transfers optical signals between the light emitter and the light receiver.