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:
Jul. 17, 2018
Filed:
Oct. 19, 2015
Samsung Electro-mechanics Co., Ltd., Suwon-si, KR;
Jun Goo Won, Suwon-si, KR;
Youn Suk Kim, Suwon-si, KR;
Yoshiyuki Tonami, Suwon-si, KR;
Ki Joong Kim, Suwon-si, KR;
Samsung Electro-Mechanics Co., Ltd., Suwon-si, KR;
Abstract
A bias circuit providing different bias voltages depending on a power mode through a simple circuit, and a power amplifier having the same are provided. The bias circuit and the power amplifier include a bias setting unit configured to vary a voltage level of a control signal controlling a bias voltage according to an operation of a first transistor being switched-off in a high power mode and switched-on in a low power mode. A bias supplying unit includes a bias supplying transistor switched based on the control signal, to supply the bias voltage having a voltage level according to a switching operation of the bias supplying transistor.