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:
Mar. 06, 2012
Filed:
Dec. 03, 2010
Seong-il Kim, Daejeon, KR;
Jongmin Lee, Daejeon, KR;
Byoung-gue Min, Daejeon, KR;
Hyung Sup Yoon, Daejeon, KR;
Hae Cheon Kim, Daejeon, KR;
Eun Soo Nam, Daejeon, KR;
Seong-Il Kim, Daejeon, KR;
Jongmin Lee, Daejeon, KR;
Byoung-Gue Min, Daejeon, KR;
Hyung Sup Yoon, Daejeon, KR;
Hae Cheon Kim, Daejeon, KR;
Eun Soo Nam, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Provided is a power amplifier device. The power amplifier device includes: a cutoff unit cutting off a direct current (DC) component of a signal delivered from a signal input terminal; a circuit protecting unit connected to the cutoff unit and stabilizing a signal delivered from the cutoff unit; and an amplification unit connected to the circuit protecting unit and amplifying a signal delivered from the circuit protecting unit, wherein the amplification unit comprises a plurality of transistors connected in parallel to the circuit protecting unit and the circuit protecting unit comprises resistors connected to between bases of the plurality of transistors.