INTERFERENCE-FREE TRANSMISSION SYSTEM WITH ANALOG SELECTION UNIT AND AUTOMATIC MATCHING DEVICE ON DISCRETE ELEMENTS Russian patent published in 2021 - IPC H03H7/40 H04B1/02 

FIELD: radio communication.

SUBSTANCE: invention relates to radio communication technology and can be used in radio stations of the shortwave (SW) band, as well as in radio stations of other bands operating in conditions of concentrated interference. An interference-free transmission system with an analog selection unit and an automatic matching device on discrete elements consists of a high-frequency generator (HFG), a bidirectional coupler, a matching circuit and an antenna, as well as a tuning unit, while the HFG has a sinusoidal signal generator (SSG), a power amplifier and switch, with additionally introduced an analog selection unit, made with ability to extract the useful signal and suppress other spectral components while maintaining the phase relationships of the useful signal from both outputs of the bidirectional coupler, four analog-to-digital converters and a microprocessor device.

EFFECT: increasing the noise immunity of the transmission system to interference induced into the antenna from the signals of powerful radio transmitting devices.

1 cl, 3 dwg