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. 03, 2015
Filed:
Mar. 13, 2013
Applicant:
Postech Academy-industry Foundation, Pohang-si, Gyungbuk, KR;
Inventors:
Assignee:
Postech Academy-Industry Foundation, Pohang-Si, Gyungbuk, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/68 (2006.01); H03F 3/21 (2006.01); H03F 1/02 (2006.01); H03F 3/72 (2006.01); H03F 3/60 (2006.01);
U.S. Cl.
CPC ...
H03F 3/211 (2013.01); H03F 3/68 (2013.01); H03F 1/0277 (2013.01); H03F 1/0288 (2013.01); H03F 3/72 (2013.01); H03F 3/602 (2013.01); H03F 2203/7236 (2013.01); H03F 2203/7239 (2013.01);
Abstract
The present invention relates to a Doherty power amplifier in which a new operation mode for accomplishing high efficiency at a lower output power level is added to operation of a conventional Doherty power amplifier, thereby achieving high efficiency at various output power levels of the power amplifier. The multi-mode Doherty power amplifier to which a second power mode is added may be reduced in size so as to be integrated into a chip.