DOPPLER RADAR UNIT Russian patent published in 1997 - IPC

FIELD: radio engineering, in particular, alarm security devices. SUBSTANCE: conducting screen, dielectric layer, strip element and corresponding connections are introduced to accomplish the goal of invention. Strip element is designed as resistor for microwave oscillations of given wavelength while it freely passes direct bias current of mixing diode. EFFECT: simplified design, increased effective distance, decreased losses of microwave power in bias circuit. 2 cl, 2 dwg