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:
Apr. 26, 2011
Filed:
Oct. 27, 2006
Applicants:
Leonard Rexberg, Hässelby, SE;
Håkan Malmqvist, Hägersten, SE;
Thomas Lejon, Vallentuna, SE;
Inventors:
Assignee:
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 7/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
Switch-modulation of a radio-frequency power amplifier by-representing the input signal by the I-signal () and Q-signal () of the complex components (I+j−Q), and pulse width modulating the I-signal and the Q-signal separately to create a modulated I-signal pulse sequence () and a modulated Q-signal pulse sequence (). Further, the pulses corresponding to negative sample values are time-shifted relative the pulses corresponding to positive sample values, and each pulse of the I-signal pulse sequence is delayed by introducing a delaying time shift.