INTERFERENCE-FREE TRANSMISSION SYSTEM WITH ANALOG SELECTOR UNIT AND AUTOMATIC MATCHING DEVICE WITH CONTINUOUS IMPEDANCE TRIMMING Russian patent published in 2021 - IPC H03H7/40 H04B1/02 

FIELD: radio communication technology.

SUBSTANCE: invention relates to radio communication technology and can be used in radio stations of the short-wave (SW) range, as well as in radio stations of other ranges, operating in conditions of concentrated interference. An interference-free transmission system with an analog selection unit and an automatic matching device with continuous impedance trimming contains a high-frequency generator (HFG), a bidirectional coupler, a matching circuit, and a trimming unit, while the HFG contains a sinusoidal signal generator (SSG), a power amplifier and a switch, while an analog selection unit is additionally introduced, made with the possibility of separating the useful signal and suppressing other spectral components while maintaining the phase relationships of the useful signal from both outputs of the bidirectional coupler.

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

2 cl, 3 dwg