Bias and IF and Control

Russia. A wide band 500 GHz integrated receiver has been designed fabricated and tested. The receiver combines a ring slot antenna SIS mixer with a twin junction type tuning circuit and a Josephson Flux-Flow oscillator as LO. The receiver layout has been made using Nb technology. The receiver chip is glued on the silicon elliptical lens with antireflection coating. According to calculations a 30 % 3-dB bandwidth can be achieved with this design. Measured SIS mixer pumping level is sufficient for SIS mixer operation in the band 400-570 GHz. We present the antenna beam pattern of a ring slot antenna on a silicon elliptical lens, a DSB noise temperature of the receiver and a FTS spectrum. The measured receiver DSB noise temperature is analyzed