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.

Date of Patent:
Mar. 25, 2014

Filed:

Mar. 29, 2012
Applicants:

Moon Suk Jeon, Seoul, KR;

Jung-rin Woo, Seoul, KR;

Sang Hwa Jung, Kyunggi-do, KR;

Young Kwon, Thousand Oaks, CA (US);

Inventors:

Moon Suk Jeon, Seoul, KR;

Jung-Rin Woo, Seoul, KR;

Sang Hwa Jung, Kyunggi-do, KR;

Young Kwon, Thousand Oaks, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 1/22 (2006.01);
U.S. Cl.
CPC ...
Abstract

A power amplifier includes first and second amplification stages. The first amplification stage is configured to amplify a radio frequency (RF) input signal. The second amplification stage includes at least one transistor configured to amplify an output of the first amplification stage, the second amplification stage being configured to have a capacitance between a gate of the at least one transistor and a first power supply voltage. The capacitance automatically varies with amplitude of the output of the first amplification stage.


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