An 18 GHz Single-Tuned Parametric Amplifier with Large Gain Bandwidth Product (Correspondence)

A single-tuned parametric amplifier was experimentally demonstrated at 18 GHz. A coaxial signal circuit and a radial idler cavity were used to obtain a large voltage-gain bandwidth product of 1440 MHz and a low noise temperature of 245/spl deg/K including the circulator loss contribution.