PT Unknown AU Hübers, H Semenov, AD Richter, H Schubert, J Hadjiloucas, S Bowen, JW Gol'tsman, G Voronov, BM Gershenzon, EM TI Antenna pattern of the quasi-optical hot-electron bolometric mixer at terahertz frequencies SE Proc. 12[super:th] Int. Symp. Space Terahertz Technol. PY 2001 BP 286 EP 296 DE NbN HEB mixers PI San Diego, CA, USA ER