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:
Oct. 18, 2016
Filed:
Apr. 30, 2013
Applicant:
Metrotech Corporation, Santa Clara, CA (US);
Inventors:
Stephen John Petherick, Exeter, GB;
George Mainescu, Hillsdale, NJ (US);
Ion Dracea, Campina, RO;
Razvan Gabriel Stefanoiu, Campina, RO;
John Mark Royle, Exeter, GB;
Assignee:
METROTECH CORPORATION, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 9/00 (2006.01); H03F 3/45 (2006.01); H04B 3/04 (2006.01); G01S 17/10 (2006.01); H04B 3/46 (2015.01); G01V 3/08 (2006.01); G01V 3/15 (2006.01);
U.S. Cl.
CPC ...
H04B 3/04 (2013.01); G01S 17/10 (2013.01); G01V 3/08 (2013.01); H04B 3/46 (2013.01); G01V 3/15 (2013.01);
Abstract
A transmitter and receiver for performing a signal select algorithm are provided. A transmitter for providing a signal on a line to be located includes at least one direct digital synthesizer, the direct digital synthesizer producing two component frequencies in response to an input square wave signal; and a feedback loop providing the input square wave.