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:
Jan. 30, 2007
Filed:
Aug. 05, 2003
Clark Conrad, Chicago, IL (US);
Armin Klomsdorf, Libertyville, IL (US);
Ernest Schirmann, Lake Zurich, IL (US);
Clark Conrad, Chicago, IL (US);
Armin Klomsdorf, Libertyville, IL (US);
Ernest Schirmann, Lake Zurich, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A power amplification circuit () includes a scalable power amplifier () to produce an RF output signal () at an output of the power amplification circuit (), and a variable impedance circuit () coupled to the output of the power amplification circuit (). The scalable power amplifier () includes a plurality of selectively activated amplifier elements (), (), () to produce the RF output signal () in accordance with a desired RF output signal power level. The power amplification circuit () selectively activates individual amplifier elements by, for example reducing power or increasing power to at least one amplifier element. The variable impedance circuit () varies an impedance of the variable impedance circuit () to dynamically load the output of the scalable power amplifier ().