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. 08, 2012
Filed:
Jan. 17, 2007
Moshe Ben-ayun, Shoham, IL;
Paul H. Gailus, Prospect Heights, IL (US);
Ovadia Grossman, Tel Aviv-Yaffo, IL;
Mark Rozental, Gedera, IL;
Moshe Ben-Ayun, Shoham, IL;
Paul H. Gailus, Prospect Heights, IL (US);
Ovadia Grossman, Tel Aviv-Yaffo, IL;
Mark Rozental, Gedera, IL;
Motorola Solutions, Inc., Schaumburg, IL (US);
Abstract
A wireless communication unit includes a linearised transmitter having a forward path and a feedback path, respectively comprising at least one up-mixer and down-mixer, and forming two loops in quadrature. A phase training signal is applied to the at least one down-mixer in the feedback path in an open loop mode of operation to identify a loop phase adjustment to be applied. At least one of the two loops is switched to a closed loop mode of operation and the loop phase adjustment is applied to at least one up-mixer located in the forward path.