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:
Feb. 15, 2011
Filed:
Mar. 14, 2008
Michael J. Cascone, Sunnyvale, CA (US);
John Arthur Lazar, Jr., Menlo Park, CA (US);
John Brinson Overstreet, Los Gatos, CA (US);
Michael J. Cascone, Sunnyvale, CA (US);
John Arthur Lazar, Jr., Menlo Park, CA (US);
John Brinson Overstreet, Los Gatos, CA (US);
Communications and Power Industries, Inc., Palo Alto, CA (US);
Abstract
A biasing system for use with a multi-stage depressed collector of a high power amplifier includes one or more adjustable power sources. A power controller provides control signals to the power sources depending on the operational RF power level. For low power applications, biasing of collector electrodes is reduced such that savings in energy costs are realized, and operational temperature and wear are reduced. The control signals are based on values stored in a look-up table. For multiple depressed electrodes, biasing can be controlled in tandem or independently.