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:
Jan. 31, 2012
Filed:
Feb. 24, 2009
Cheol-woo Ahn, Suwon-si, KR;
Keun-hyo Song, Seongnam-si, KR;
Cheol-soo Seo, Suwon-si, KR;
Young-yoon Woo, Suwon-si, KR;
Bum-man Kim, Pohang-si, KR;
Il-du Kim, Pohang-si, KR;
Cheol-Woo Ahn, Suwon-si, KR;
Keun-Hyo Song, Seongnam-si, KR;
Cheol-Soo Seo, Suwon-si, KR;
Young-Yoon Woo, Suwon-si, KR;
Bum-Man Kim, Pohang-si, KR;
Il-Du Kim, Pohang-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Postech Foundation, Pohang-si, KR;
Abstract
An apparatus and a method for an Envelope Elimination and Restoration (EER) power transmitter are provided. The apparatus includes a signal separator for splitting a transmit signal to an amplitude component and a phase component, an orthogonal modulator for modulating the phase component into a Radio Frequency (RF) signal, a bias modulator for linearly amplifying the amplitude component, for determining a bias voltage according to a magnitude of the amplitude component, and for providing a current generated using the determined bias voltage to a high-efficiency power amplifier and the high-efficiency power amplifier for amplifying the RF signal using the linearly amplified amplitude component as a drain bias voltage and using the generated current as a drain bias current.