17th International Symposium on Space Terahertz Technology P1-08 16 Pixel HEB Heterodyne Receiver for 2.5 THz

Abstract — A 16 pixel heterodyne receiver for 2.5 THz has been developed based on NbN superconducting hot-electron bolometer (HEB) mixers. The receiver uses a quasioptical RF coupling approach where IIEB mixers are integrated into double dipole antennas on 1.5p,m thick Si 3 N4 / SiO2 membranes. Spherical mirrors (one per pixel) and backshort distance from the antenna have been used to design the output mixer beam profile. We present here the results of the antenna simulations using HFSS and ADS, as well as the beam calculations after the collimating mirror. Index Terms — HEB mixer, THz camera, NbN films, membrane