TRANSMITTING SYSTEM OF HIGH SECRECY OF SETTING WITH AN AUTOMATIC MATCHING DEVICE USING A BROADBAND SIGNAL Russian patent published in 2023 - IPC H04B1/02 

FIELD: radio engineering.

SUBSTANCE: invention can be used in shortwave (HF), ultrashortwave (UHF) radio stations, as well as in radio stations of other bands. To do this, the first (7.1) and second (7.2) level analysers (LA) are introduced into the device, and the high-frequency signal generator (1) – a broadband signal generator (BBSG) (10) and a modulator (11) connected in series, the output of the former is connected to one of the key inputs (3). The outputs of the first (7.1) and second (7.2) LAs are connected to the corresponding inputs of the tuning unit (6). The output of the branched voltage of the incident wave Ui of the bidirectional coupler (BDC) (5) is connected to the input of the first LA (7.1); the output of the branched voltage of the reflected wave Uref of the BDC (5) is connected to the input of the second level analyser (7.2).

EFFECT: increase in the secrecy of the transmitting device during the tuning of the transmitting path, understood as the distance from which the signal emitted at this time can be detected.

5 cl, 5 dwg