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80 - 360 GHz very wide band millimeter wave network analyzer

F. Mattiocco, M.Carter
Institut de Radio Astronomie Millimétrique, 38406 St. Martin d'Hères, France
Abstract: Millimeter receivers made for the Radio Astronomy use devices and materials whose transmission, and reflection properties have to be known over a 40% bandwidth. We have made a millimeter extension to an HP8510C vector analyzer, which at present allows magnitude and phase measurement between 80 and 360 GHz with a sensitivity of dB and deg rms respectively over 30% instantaneous bandwidth for the transmission, and 23% for the reflection. Improvements relative to the first version include new harmonic mixers, and an active doubler. Dynamic ranges up to 60 dB in transmission and 50 dB in reflection are obtained up to 280 GHz, with more than 50 GHz instantaneous bandwidth using waveguide calibration. Detection with a 30 dB dynamic range is obtained at 320 - 360 GHz. Time domain measurements give spatial resolution down to 2 mm.
To appear in: Digest of the 20th Int. Conf. on Infrared and Millimeter Waves, Florida, USA, Dec. 1995.