A document proposes the development of several alternative types of electronic circuits for wristband transponders for the system described in "Person-Locator System Based on Wristband Radio Transponders" (NPO-19280) NASA Tech Briefs, Vol. 19, No. 12 (December 1995), page 40. To recapitulate: microscopic transponder circuits embedded in wristbands would be powered by modulated signals radiated by transceiver nodes and would respond by transmitting signals modulated with unique digital codes to identify the wearers. The document includes a brief discussion of the advantages of the current mode in the proposed application; these advantages include superior high-frequency performance and independent control of closed-loop gain and bandwidth.

This work was done by Victor Boyadzhyan and Frederick Mintz of Caltech forNASA's Jet Propulsion Laboratory. In accordance with Public Law 96-517, the contractor has elected to retain title to this invention. Inquiries concerning rights for its commercial use should be addressed to

Technology Reporting Office
Mail Stop 122-116
4800 Oak Grove Drive
Pasadena, CA 91109
(818) 354-2240

Refer to NPO-20100

This Brief includes a Technical Support Package (TSP).
Development of ciruitry for wristband radio transponders

(reference NPO20100) is currently available for download from the TSP library.

Don't have an account? Sign up here.

NASA Tech Briefs Magazine

This article first appeared in the October, 1998 issue of NASA Tech Briefs Magazine.

Read more articles from the archives here.