MODULE OF DOPPLER RADAR Russian patent published in 1997 - IPC

FIELD: radio engineering, devices detecting movement of man and various objects, burglar alarms. SUBSTANCE: proposed module includes resistor 4, capacitor 5, choke 6. Resistor 4 provides for zero bias across mixer diode 3. Generator 1 operates under pulse mode and due to this there appears possibility to filter away all noise signals which parameters differ from parameters of legitimate pulse signals with aid of capacitor 5 and choke 6. EFFECT: enhanced noise immunity of module. 2 cl, 2 dwg