DETECTOR Russian patent published in 2013 - IPC G01S13/56 

FIELD: radio engineering, communication.

SUBSTANCE: detector has a first, a second and a third microwave balance mixer, a reference generator, transmitting and receiving antennae, a master generator, an intermediate frequency amplifier, a first and a second multiplier, a 90° phase changer, a 90° microwave phase changer, a power halver, a first and a second low frequency amplifier, a first and a second comparator with a reference voltage unit, a first and a second pulse counter with a count interval generator, a detection signal generator, connected to each other in a certain manner.

EFFECT: improved characteristics of detecting people from their breathing or heartbeat.

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