SU849421A1 - Amplification device - Google Patents

Description

(54) DEVICE STRENGTHENING

one

FIELD OF THE INVENTION The invention relates to radio engineering and can be used in microwave systems.

A gain device is known comprising p parallel gain channels (where n 2,3, ...), each of which is made on the first and second hybrid bridges having respectively the first and second inputs and outputs, the outputs of the first hybrid bridge being connected to the inputs of the second the hybrid bridge through amplifiers, the second input of the first hybrid bridge of the nth channel through the bslastic resistor is connected to the common bus of the gain device, the second outputs of the second hybrid bridges are connected via ballast resistors to the common bus of the gain device, and x first outputs - to the inputs of the adder, whose output is the output of the gain G1 of the device.

However, the known device has insufficient dynamic range.

The purpose of the invention is to expand the dynamic range.

This goal is achieved by the fact that in a gain device containing n parallel gain channels

(where n 2,3 ...), each of KOTOJ IX is made on the first and second hybrid bridges, having first and second inputs and outputs, respectively, with the outputs of the first hybrid bridge connected to the inputs of the second hybrid bridge through amplifiers, the second input of the first hybrid bridge n-th channel through the ballast resistor

is connected to a common bus gain device; , the second outputs of the second hybrid bridges are connected via ballast resistors to the common bus of the amplification device, and their first

15 outputs to the inputs of the adder, the output of which is the output of the gain device, the first input of the first hybrid bridge of each channel, except the first, is connected to the second

The 20th entrance of the first hybrid bridge of the previous channel, and the first entrance of the hybrid bridge of the first channel - to the input of the force device.

The drawing is structural

25 is an electrical circuit of the proposed device.

The amplification device contains n parallel amplification channels, each of which is made on the first and second hybrid bridges 1, 1.,. and 2

thirty

2, j.,. Amplifiers 3, ... and 4., 4, j. .. ballast loads 5, 5 - .. and 6 ... and adder 7.

The device works in the following way.

The input signal is fed to the input of the first hybrid bridge 1 of the first channel and is divided in half, amplified by amplifiers 3 and 4, and through the second hybrid bridge 2 of the first channel is fed to the adder 7, when the input signal reaches a value corresponding to the limiting level of amplifiers 3, and 4, the first channel, the signal from the arm connected to the amplifier 4 J is displayed and fed to the first input of the first hybrid IQ bridge of the second channel, where it is divided in half, amplified by amplifiers 3 and 4 of the second channel and through the BTopoif hybrid bridge 2 2 enters mmator 7 wherein summed with a limited signal output from the second axle 2 of the first fusion channel.

Thus, as a result of summing the output signals of the second hybrid bridges 2-, 2g, the dynamic range of the device as a whole is expanded.

Claims (1)

1. Handbook of electronic devices. Ed. D.P. Lindech M., Energie, 1978, vol. 1, p. 309, rice 3-129 (prototype).