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:
Aug. 05, 2008
Filed:
Jul. 20, 2005
Hyun-il Kang, Ansan-si, KR;
Young-hwan Kim, Gyeonggi-do, KR;
Jae-sup Lee, Yongin-si, KR;
Sang-hyun Woo, Seoul, KR;
Hyun-Il Kang, Ansan-si, KR;
Young-Hwan Kim, Gyeonggi-do, KR;
Jae-Sup Lee, Yongin-si, KR;
Sang-Hyun Woo, Seoul, KR;
Samsung Electronics Co., Ltd, , KR;
Abstract
A predistorter that linearizes the nonlinearity of a power amplifier in a system supporting a multimode and a multiband (frequency band). The predistorter includes a field-effect transistor, an impedance transform unit, a first inductor, a first capacitor, and a second capacitor. The field-effect transistor has a source connected to the ground and uses a variable gate bias voltage. The impedance transform unit is connected to a drain of the field-effect transistor to perform impedance transform. The first inductor is connected between the impedance transform unit and a voltage provided to the field-effect transistor. The first capacitor is connected between a power input terminal and the impedance transform unit. The second capacitor is connected between a power output terminal and the impedance transform unit.