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Proceedings Paper

Fast digital phase detection or frequency discrimination using surface acoustic waves
Author(s): Robert B. Ward
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Paper Abstract

In the present device, which consists of a SAW sensor and a specialized IC processor, the former generates a set of voltages whose pattern represents the delay or phase difference of the input signals, while the latter produces a parallel digital readout of delays or phases on the bases of voltage comparisons and unclocked logic operations. If equipped with a delay on one input branch, this SAW sensor can measure frequency using the same processor. Six- and seven-bit devices are envisioned with response times of the order of 100 nsec.

Paper Details

Date Published: 1 September 1990
PDF: 9 pages
Proc. SPIE 1297, Hybrid Image and Signal Processing II, (1 September 1990); doi: 10.1117/12.21295
Show Author Affiliations
Robert B. Ward, Lockheed Palo Alto Research La (United States)


Published in SPIE Proceedings Vol. 1297:
Hybrid Image and Signal Processing II
David P. Casasent; Andrew G. Tescher, Editor(s)

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