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:
May. 18, 2010
Filed:
May. 27, 2004
John James Fitzpatrick, Indianapolis, IN (US);
Robert Warren Schmidt, Carmel, IN (US);
Robert Alan Pitsch, Carmel, IN (US);
John Joseph Curtis, Iii, Noblesville, IN (US);
John James Fitzpatrick, Indianapolis, IN (US);
Robert Warren Schmidt, Carmel, IN (US);
Robert Alan Pitsch, Carmel, IN (US);
John Joseph Curtis, III, Noblesville, IN (US);
Thomson Licensing, Boulgone-Billancourt, FR;
Abstract
The present invention relates to system diagnostic circuitry for antenna systems with active antenna components. More specifically, the present invention discloses an apparatus comprising a connection between an antenna and a power supply conducting a first DC voltage, a source of a pulse width modulated signal, a lowpass filter for converting the pulse width modulated signal to a second DC voltage, and a comparator for comparing the first DC voltage and the second DC voltage and generating an output signal responsive to the difference between the first DC voltage and the second DC voltage.