SiGe and Ge Cryogenic Power Transistors

R. R. Ward, W. J. Dawson, L. Zhu, R. K. Kirschman*, G. Niu, R. M. Nelms, O. Mueller, M. J. Hennessy, E. K. Mueller, R. L. Patterson, J. E. Dickman and A. Hammoud GPD Optoelectronics Corp., 7 Manor Parkway, Salem, New Hampshire 03079, U.S.A. Tel: +1-603-895-6865, Fax: +1-603-895-6866, rrward@gpd-ir.com Auburn University, Dept. of Electrical and Computer Engineering, Auburn, Alabama, U.S.A LTE-Low Temperature Electronics, Ballston Lake, New York, U.S.A. MTECH Laboratories LLC, Ballston Lake, New York, U.S.A. NASA Glenn Research Center, Cleveland, Ohio, U.S.A. QSS Group Inc., Cleveland, Ohio, U.S.A.