SU327865A1 - Device for separating receiving and transmitting channels in operation for two antennas - Google Patents

Abstract

A DEVICE FOR DIVIDING RECEIVING AND TRANSMITTING CHANNELS WHEN OPERATING ON TWO ANTENNAs, consisting of two separation filters of reception-transmission and hybrid connections, I distinguish P5ees by the fact that, in order to expand its operating frequency range and selectively switch antennas on each of the channels, the separation receive-transmit filters are connected by common inputs to each of the antennas and are connected by high-frequency and low-frequency outputs through switches with two hybrid connections, the extended shoulders of one of which are connected to riemnikam, and the other - to the transmitters.

Description

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The invention relates to microwave technology and can be used in antenna-feeder devices of onboard equipment.

A device for separating receive and transmit channels when operating on two antennas, consisting of two separation filters for receiving and transmitting and hybrid connections, is known. In such devices, the frequency range is limited, separation filters are complex, and there is no possibility to selectively switch antennas along each channel.

The purpose of the invention is to expand the operating frequency and to provide selective switching of antennas for each channel. This is achieved by the fact that split-receive-transmit filters are connected by common inputs to each antenna and connected to high-frequency and low-frequency outputs via switches with two hybrid connections, one shoulder of which is connected to the receivers, and the other to the transmitters.

Pa drawing shows a block diagram of the proposed device.

The device contains separation filters 1 and 2 of reception-transmission, hybrid connections 3 and 4 and switch 5. Separation filters 1 and 2 are connected by common inputs to antennas b and 7, respectively, and connected by high-frequency and low-frequency outputs through switch 5 with hybrid connections 4 and 3, the developed shoulders of the first of which are connected to reception278652

8 and 9, and the second to transmitters 10 and 11 o

The device works as follows.

The power of the transmitter 10 is supplied to the hybrid connection 3, distributed between the lower outputs. They are split-frequency filters 1 and 2 and pass through antennas 6 and 7. The transmitter power 11 is similarly channelized. Inter-transmitter transmission takes place via hybrid connection 3, which is a bridge device or 3 dB directional coupler tuned to the transmission bandwidth. channels.

Signals received by antenna sh 6 and 7 are fed to the common inputs of the separation filters -1 and 2 and through the high-frequency channels of these filters, podak: 1 gs to hybrid connection 4 and from it to receivers 8 and 9.

The frequency ranges of the transmitting and receiving channels of the device can differ from one another by an arbitrary value, and the greater this difference, the easier it is to implement separation filters 1 and 2. Selective switching of antennas 6 and 7 on the transmitting or receiving channels is accomplished using switch 5, which at the specified inclusion can turn off the antenna 7 only on the receiving channel. Similarly, any other channel is disconnected from one of the antennas.

Claims (1)

DEVICE FOR SEPARATION OF RECEIVING AND TRANSMITTING CHANNELS WHEN OPERATING ON TWO ANTENNA, consisting of • two reception and transmission separation filters and hybrid connections, characterized in that, in order to expand its operating frequency range and selectively switch antennas for each channel, reception separation filters - transmissions are connected by common inputs to each of the antennas and are connected by high-frequency and low-frequency outputs through switches with two hybrid connections, the untied shoulders of one of which are connected us to the receiver and the other - to the transmitters. Soo m QO & sl