FREQUENCY-MODULATED SIGNAL TRANSCEIVER Russian patent published in 2014 - IPC H04B1/38 

FIELD: radio engineering, communication.

SUBSTANCE: transceiver comprises a modulating signal source, a main high-pass filter, an integrator, a phase modulator, a frequency multiplier, a power amplifier, an antenna, a synchroniser, a modulator, a controlled crystal oscillator, an indicator, a frequency mixer, an intermediate frequency amplifier, a frequency detector, an additional high-pass filter, a first delay element, an adder, an additional low-pass filter and a second delay element, connected to each other in a certain manner.

EFFECT: high information concealment and noise-immunity of transmitted information.

2 dwg