DOPPLER SHIFT SIMULATOR Russian patent published in 1998 - IPC

FIELD: microwave engineering; Doppler radar calibration and checking. SUBSTANCE: Doppler shift simulator has antenna-waveguide channel and continuous-action reflecting electromechanical phase shifter. Novelty is that it is provided with n-arm circulator and additional (n-2) similar continuous-action electromechanical reflecting phase shifters; antenna-waveguide channel is connected to first arm of circulator and each of remaining (n-1) arms is connected with respective phase shifter; Doppler frequency being simulated, number of circulator arms, and Doppler shift of each i-th phase shifter are interrelated by expression , where Tdg

is Doppler frequency being simulated; n is number of circulator arms, fdgi is Doppler shift of i-th phase shifted; i=1,2,3,...(n-1). EFFECT: enlarged functional capabilities. 1 dwg