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:
Mar. 29, 2022
Filed:
Dec. 21, 2020
Texas Instruments Incorporated, Dallas, TX (US);
Srinivas Theertham, Bengaluru, IN;
Jagdish Chand, Bengaluru, IN;
Yogesh Darwhekar, Bengaluru, IN;
Subhashish Mukherjee, Bengaluru, IN;
Jayawardan Janardhanan, Bengaluru, IN;
Uday Kiran Meda, Hyderabad, IN;
Arpan Sureshbhai Thakkar, Vadodara, IN;
Apoorva Bhatia, Lucknow, IN;
Pranav Kumar, Hatia, IN;
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Abstract
A frequency synthesizer includes a phase-locked loop (PLL). The PLL includes a first voltage-controlled oscillator (VCO) and a second VCO, each comprising an oscillator, a capacitor bank, and a bias circuit. The capacitor bank is configured to selectably adjust an output frequency of the oscillator. The bias circuit is configured to provide a bias current to the oscillator, and includes a current digital-to-analog converter (IDAC), and an amplifier coupled to the IDAC and configured to drive the oscillator.