Patent · US Active

Frequency synthesizer

US11290118B2 · kind B2 · utility

0Cited by

1References

16Claims

0Family size

Assignee

TEXAS INSTRUMENTS INCORPORATED · US

Inventors

Srinivas Theertham · Bengaluru, IN
Jagdish Chand · Dublin, US
Yogesh Darwhekar · Bengaluru, IN
Subhashish Mukherjee · Kanchinakote, IN
Jayawardan Janardhanan · Bengaluru, IN
Uday Kiran Meda · Hyderabad, IN
Arpan Sureshbhai Thakkar · Vadodara, IN
Apoorva Bhatia · Lucknow, IN
Pranav Kumar · Atrauli, IN

Key dates

Filing date	Dec 21, 2020
Grant date	Mar 29, 2022
Priority date	—
Expiry date	Dec 21, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH03M1/66
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.