High temperature superconductor analog electronics for millimeter-wavelength communicationsThe performance of high temperature superconductor (HTS) passive microwave circuits up to X-band was encouraging when compared to their metallic counterparts. The extremely low surface resistance of HTS films up to about 10 GHz enables a reduction in loss by as much as 100 times compared to copper when both materials are kept at about 77 K. However, a superconductor's surface resistance varies in proportion to the frequency squared. Consequently, the potential benefit of HTS materials to millimeter-wave communications requires careful analysis. A simple ring resonator was used to evaluate microstrip losses at Ka-band. Additional promising components were investigated such as antennas and phase shifters. Prospects for HTS to favorable impact millimeter-wave communications systems are discussed.
Document ID
19910069084
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Romanofsky, R. R. (NASA Lewis Research Center Cleveland, OH, United States)
Bhasin, K. B. (NASA Lewis Research Center Cleveland, OH, United States)