IEEE International Conference on Terahertz Electronics (THz)
A planar SIS mixer for 400-500 GHz
Rudolf Nitsch, Karl Jacobs
Abstract
We present a new planar SIS mixer for array applications in the 400-500 GHz range. The mixer consists of a double dipole antenna connnected to a pair of superconducting tunnel junctions by a novel tuning and matching structure. It is mounted in the focal plane of a silicon parabola collimating the broad double dipole beams into beams with f-numbers of /spl ap/13. Four mixers were built in an array configuration on a single substrate and two of them were tested. The receiver DSB noise temperatures are below 300 K in the 456-492 GHz range. The best results are 180 K and 163 K respectively at 473 GHz.