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. 09, 2006
Filed:
Apr. 26, 2004
Ray Myron Parkhurst, Fremont, CA (US);
Bartholomeus Hendrik Jansen, San Jose, CA (US);
Lovell H. Camnitz, Santa Clara, CA (US);
Camille a Lesko, Los Gatos, CA (US);
Ray Myron Parkhurst, Fremont, CA (US);
Bartholomeus Hendrik Jansen, San Jose, CA (US);
Lovell H. Camnitz, Santa Clara, CA (US);
Camille A Lesko, Los Gatos, CA (US);
Other;
Abstract
A power amplifier circuit includes an adjustable gain power amplifier for amplifying an RF input signal. An isolated node in the adjustable gain power amplifier is isolated from the output load by a gain stage of the adjustable gain power amplifier. The power level of a signal at the isolated node corresponds to the power level of a signal at the output load. A detector is either capacitively coupled to the isolated node or connected by a direct current (DC) connection. The detector detects the power level of the signal at the isolated node. The detector generates a power level indicator that is sent to a gain control circuit. The gain control circuit adjusts the gain of the adjustable gain power amplifier to maintain a constant drive level at the isolated node.