HTS diplexer and low noise amplifier rf module

The design and performance of a 77 K, thin film HTS diplexer and low noise amplifier subassembly is described. The diplexer circuit is an all planar design with a 50 /spl Omega/ match at the filter/diplexer manifold interconnect. The low noise amplifier has very low noise figure (0.2 dB) and simultaneously good input/output VSWR when operated at 77 K.