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. 04, 2014
Filed:
Oct. 26, 2010
Applicants:
Steven L. Dvorak, Tucson, AZ (US);
Ben K. Sternberg, Tucson, AZ (US);
Inventors:
Steven L. Dvorak, Tucson, AZ (US);
Ben K. Sternberg, Tucson, AZ (US);
Assignee:
Arizona Board of Regents on behalf of the University of Arizona, Tucson, AZ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 23/02 (2006.01); G01V 3/10 (2006.01);
U.S. Cl.
CPC ...
G01V 3/104 (2013.01); G01R 23/02 (2013.01);
Abstract
Sub-surface detection systems include a transmitter antenna and a receiver antenna that is coupled to a receiver circuit. The receiver antenna is rotated to three different orientations, and a reference null field direction is determined. Based on variations in the null field direction at other frequencies or variations in a magnitude of a field component in the reference null field direction, the presence, location, depth, size, and electrical properties of a target can be determined.