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230 and 492 GHz LOW NOISE SIS WAVEGUIDE RECEIVERS EMPLOYING TUNED Nb/AlO x/Nb TUNNEL JUNCTIONS

J.W. Kooi1, M. Chan1, B. Bumble2, H.G. LeDuc2, P.L. Schaffer1, and T.G. Phillips1

1- Caltech Submillimeter Observatory

Division of Physics, Mathematics and Astronomy California Institute of Technology, Pasadena, California 91125

2- Center for Space Micorelectronics Technology, Jet Propulsion Laboratory

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