An MIC Doppler Module with Output Radiation Normal to the Substrate Plane

A flat Doppler module, only 18 mm thick, was fabricated. The module is based on a microwave integrated circuits (MIC) stabilized oscillator having a dipole antenna on a single substrate. It emits a microwave beam normal to the substrate plane whose radiation pattern is nearly symmetrical around the normal axis with a half-power-angle of about 60/spl deg/.