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:
May. 19, 2020
Filed:
Dec. 28, 2018
Applicant:
Rafael Microelectronics, Inc., Hsinchu County, TW;
Inventor:
Tzu-Yun Wang, Hsinchu County, TW;
Assignee:
Rafael Microelectronics, Inc., Hsinchu County, TW;
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/45 (2006.01); H03H 11/04 (2006.01);
U.S. Cl.
CPC ...
H03F 3/45264 (2013.01); H03F 3/45165 (2013.01); H03H 11/0422 (2013.01); H03F 2200/465 (2013.01); H03F 2203/45288 (2013.01); H03F 2203/45352 (2013.01);
Abstract
A circuit for implementing an operational transconductance amplifier (OTA) based on telescopic topology, wherein cascode transistors of the operational transconductance amplifier (OTA) are self-biased without using additional biasing circuitry, which not only reduces power consumption but also achieves high gain without extra current, and each cascode stage of the OTA has a pair of transistors so that the swing of the output differential signals of the OTA can be completely symmetrical so as to benefit second-order harmonic rejection, CMRR and PSRR.