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. 27, 2021
Filed:
May. 21, 2020
Applicant:
International Business Machines Corporation, Armonk, NY (US);
Inventors:
Sudipto Chakraborty, Plano, TX (US);
Yang You, Austin, TX (US);
Assignee:
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/183 (2006.01); H03K 21/02 (2006.01); H03L 7/191 (2006.01); G05F 1/575 (2006.01); H03L 7/187 (2006.01);
U.S. Cl.
CPC ...
H03L 7/191 (2013.01); G05F 1/575 (2013.01); H03K 21/026 (2013.01); H03L 7/183 (2013.01); H03L 7/187 (2013.01);
Abstract
A method and apparatus for controlling a frequency range of a self-resonant frequency (SRF) of a high speed divider implemented in current mode logic (CML) D triggers by controlling a field effect transistor (FET) load resistor bias voltage to FETs operating in linear regions in load resistors in the CML D triggers. Tail currents of the CML D triggers are controlled to track inversely to a resistor value.