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Proceedings Paper

Superconductive digital instantaneous frequency-measurement subsystem
Author(s): Guochun Liang; C. F. Shih; Richard S. Withers; B. F. Cole; Marie E. Johansson; L. P. Suppan
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Paper 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.

Paper Details

Date Published: 4 January 1994
PDF: 12 pages
Proc. SPIE 2156, High Tc Microwave Superconductors and Applications, (4 January 1994); doi: 10.1117/12.166144
Show Author Affiliations
Guochun Liang, Conductus, Inc. (United States)
C. F. Shih, Conductus, Inc. (United States)
Richard S. Withers, Conductus, Inc. (United States)
B. F. Cole, Conductus, Inc. (United States)
Marie E. Johansson, Conductus, Inc. (United States)
L. P. Suppan, Conductus, Inc. (United States)


Published in SPIE Proceedings Vol. 2156:
High Tc Microwave Superconductors and Applications
Robert B. Hammond; Richard S. Withers, Editor(s)

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