The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 2012
Filed:
Mar. 12, 2009
Reza Tayrani, Marina Del Rey, CA (US);
Richard D. Young, Lawndale, CA (US);
Nick J. Rosik, Torrance, CA (US);
Mark E. Stading, Hermosa Beach, CA (US);
Shaun L. Champion, Redondo Beach, CA (US);
Ives H. Philip, Redondo Beach, CA (US);
Tho X. Nguyen, Los Angeles, CA (US);
Reza Tayrani, Marina Del Rey, CA (US);
Richard D. Young, Lawndale, CA (US);
Nick J. Rosik, Torrance, CA (US);
Mark E. Stading, Hermosa Beach, CA (US);
Shaun L. Champion, Redondo Beach, CA (US);
Ives H. Philip, Redondo Beach, CA (US);
Tho X. Nguyen, Los Angeles, CA (US);
Raytheon Company, Waltham, MA (US);
Abstract
A wireless temperature sensor network includes a base station unit which transmits query signals cyclically addressing a plurality of temperature sensor transponder units. The transponder units are passive and derive operating power from the query signal to encode measured temperature data into a reply signal which is received by the base station. In a dual carrier embodiment, the query signal and reply signals are transmitted on separate frequencies. In a backscattering embodiment, the antennas of the transponder units can be switched between an absorption mode in which the query signal is received and a reflection mode in which the query signal is reflected back to the base station. The transponder antennas are switched in such a manner as to encode temperature data in the reflected signal to form a reply signal. The network embodiments are particularly applicable to space based platforms.