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. 25, 2017
Filed:
Dec. 08, 2015
Applicant:
Mediatek Inc., Hsin-Chu, TW;
Inventors:
Tsun-Yuan Fan, Tianwei Township, Changhua County, TW;
Wen-Hua Chang, Tainan, TW;
Assignee:
MEDIATEK INC., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F 3/04 (2006.01); H03K 19/0175 (2006.01); H03F 3/19 (2006.01); H04B 1/04 (2006.01); H03F 3/45 (2006.01); G05F 3/26 (2006.01);
U.S. Cl.
CPC ...
H03K 19/017509 (2013.01); H03F 3/19 (2013.01); H03F 3/45188 (2013.01); H03F 3/45273 (2013.01); H03F 3/45659 (2013.01); H04B 1/04 (2013.01); G05F 3/26 (2013.01); H03F 2200/84 (2013.01); H03F 2200/91 (2013.01); H03F 2203/45008 (2013.01); H03F 2203/45082 (2013.01); H03F 2203/45418 (2013.01); H03F 2203/45481 (2013.01); H04B 2001/0408 (2013.01);
Abstract
A current amplifier and a transmitter using the same. The current amplifier has a first and second transistor and a voltage level shifting unit. The first transistor has a gate receiving an input current and a drain receiving a driving current. The voltage level shifting unit providing a voltage shift is coupled between the drain of the first transistor and the gate of the second transistor. An output current is generated at the drain of the second transistor.