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:
Nov. 29, 2016
Filed:
Aug. 13, 2014
Xiaohua Yi, Atlanta, GA (US);
Chunhee Cho, Atlanta, GA (US);
Benjamin Cook, Atlanta, GA (US);
Yang Wang, Atlanta, GA (US);
Manos Tentzeris, Atlanta, GA (US);
Roberto T. Leon, Atlanta, GA (US);
Xiaohua Yi, Atlanta, GA (US);
Chunhee Cho, Atlanta, GA (US);
Benjamin Cook, Atlanta, GA (US);
Yang Wang, Atlanta, GA (US);
Manos Tentzeris, Atlanta, GA (US);
Roberto T. Leon, Atlanta, GA (US);
Georgia Tech Research Corporation, Atlanta, GA (US);
Abstract
A strain and crack sensor senses an amount of strain induced in an object. A receiving planar antenna has a first resonant frequency and is configured to receive a querying signal at the first resonant frequency. A transmitting planar antenna has a second resonant frequency that is twice the first resonant frequency. At least one of the receiving planar antenna and the transmitting planar antenna is bonded to the object so that at least one of strain induced in the object or a crack formed in the object causes a shift in at least one of the first resonant frequency or the second resonant frequency. A matching element is in electrical communication with the first planar antenna and the second planar antenna. The matching element is configured to cause the transmitting planar antenna to radiate a response signal in response to the querying signal.