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. 09, 2019
Filed:
Jan. 16, 2018
Applicant:
Industrial Technology Research Institute, Hsinchu, TW;
Inventors:
Tai-Hsing Lee, Hsinchu, TW;
Tsai-Kan Chien, Yunlin County, TW;
Assignee:
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/16 (2006.01); H03F 3/08 (2006.01); H03G 3/30 (2006.01); H03F 3/45 (2006.01);
U.S. Cl.
CPC ...
H03F 3/082 (2013.01); H03F 3/087 (2013.01); H03F 3/45183 (2013.01); H03G 3/3084 (2013.01);
Abstract
A wideband transimpedance amplifier circuit is provided. The wideband transimpedance amplifier circuit includes a common-gate transistor, a bias current controlling circuit and an amplifier circuit. The bias current controlling circuit is coupled to a source of the common-gate transistor. The amplifier circuit is coupled to a drain of the common-gate transistor. The bias current controlling circuit adjusts the input impedance of the wideband transimpedance amplifier circuit according to the output signal of the amplifier circuit.