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:
Oct. 06, 2009
Filed:
Nov. 30, 2007
Applicant:
Bun Kobayashi, Cypress, CA (US);
Inventor:
Bun Kobayashi, Cypress, CA (US);
Assignee:
Silicon Storage Technology, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/68 (2006.01);
U.S. Cl.
CPC ...
Abstract
An RF power amplifier includes a plurality of amplifier cells. Each amplifier cell includes a bipolar transistor and a base circuit that comprises an RF coupling capacitor, a bias resistor, a base capacitor, and a base resistor. The base circuit transmits DC bias current and an RF signal to the base of the bipolar transistor to provide a selectable frequency response. The base circuit may be implemented using a structure of stacked capacitors.