DEVELOPMENT OF A LOW-NOISE MILLIMETER-WAVE PARAMETRIC AMPLIFIER.
Quarterly progress rept. no. 3, 1 Jan-1 Apr 64,
CONTROL DATA CORP MELVILLE N Y TRG DIV
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The self-resonant frequency of an unpackaged GaAs varactor die was measured and found to be 44 Gc. This result is encouraging because the optimum idler frequency required for minimum amplifier excess noise temperature is approximately 40 Gc. As a preliminary step in the development of a 94 Gc Y-junction circulator, a unit having a 7 bandwidth has been fabricated and tested at 35 Gc. The use of a laser beam welder appears to be a practical technique for bonding ribbons to extremely small mesa contacts, even after the die is etched. Author