NASA NTRS · 19720039751
A millimeter-wave pumped X-band uncooled parametric amplifier.
Abstract
GaAs Schottky barrier varactors with a cutoff frequency of 800 GHz are used in a balanced diode-type parametric amplifier operating with a signal frequency at 7.5 GHz. The room-temperature parameters of the amplifier are a gain of 15 dB, a bandwidth of 500 MHz, and an excess noise temperature of 63 K (a noise figure of 0.86 dB).
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Dickens, L. E.. 1972-03-01. A millimeter-wave pumped X-band uncooled parametric amplifier.. https://ntrs.nasa.gov/citations/19720039751
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