PT Unknown AU Baryshev, A Lauria, E Hesper, R Zijlstra, T Wild, W TI Fixed-tuned waveguide 0.6 THz SIS mixer with wide band IF SE Proc. 13[super:th] Int. Symp. Space Terahertz Technol. PY 2002 BP 1 EP 9 PI Cambridge, MA, USA ER