PT Unknown AU Gao, JR Hajenius, M Baselmans, JJA Yang, ZQ Baryshev, AM Barends, R Klapwijk, TM Voronov, B Gol'tsman, G Callaos, N TI Twin-slot antenna coupled NbN hot electron bolometer mixers for space applications SE Proc. 9-th WMSCI PY 2005 BP 148 EP 153 VL 9 DE NbN HEB mixers ER