Superconductive digital instantaneous frequency-measurement subsystem

Guochun Liang; C. F. Shih; Richard S. Withers; B. F. Cole; Marie E. Johansson; L. P. Suppan

doi:10.1117/12.166144

4 January 1994 Superconductive digital instantaneous frequency-measurement subsystem

Guochun Liang, C. F. Shih, Richard S. Withers, B. F. Cole, Marie E. Johansson, L. P. Suppan

Proceedings Volume 2156, High Tc Microwave Superconductors and Applications; (1994) https://doi.org/10.1117/12.166144
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

A five-bit high-temperature-superconductive digital instantaneous frequency-measurement (DIFM) subsystem has been constructed for the determination of the frequency of unknown signals over a 500 MHz bandwidth, centered on 4 GHz, with a resolution of +/- 7.8 MHz. The subsystem contains a cryogenic section with five discriminator modules utilizing superconductive delay lines, GaAs mixers, and power dividers. With a single-tone cw input between -40 dBm and +10 dBm, the frequency quantization boundaries of the subsystem are, on average, 3.1 MHz from their design values. This system demonstrates the potential system-level application of high-temperature superconductive electronics in instrumentation, communication, radar, and electronic warfare.

Citation Download Citation

Guochun Liang, C. F. Shih, Richard S. Withers, B. F. Cole, Marie E. Johansson, and L. P. Suppan "Superconductive digital instantaneous frequency-measurement subsystem", Proc. SPIE 2156, High Tc Microwave Superconductors and Applications, (4 January 1994); https://doi.org/10.1117/12.166144

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