Patent · US Expired

Phase-loched loop circuits and voltage controlled oscillator circuits

US5650754A · kind A · utility

30Cited by

34References

22Claims

0Family size

Assignee

Synergy Microwave Corporation · US

Inventors

Shankar Joshi · Bengaluru, IN
Ulrich L. Rohde · Upper Saddle River, US
Klaus Eichel · Weißenhorn, DE

Key dates

Filing date	Feb 15, 1995
Grant date	Jul 22, 1997
Priority date	—
Expiry date	Feb 15, 2015

Classification

Technology area (CPC H)Electricity
CPC primaryH03L2207/10
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

Voltage controlled oscillator (VCO) circuits include a VCO and voltage regulator provided on an integrated VCO module, balanced control input for the VCO, buffering of the VCO and frequency multiplication of the VCO output signal. Such improved VCO circuits are especially useful in phase-locked loop (PLL) circuits. Improved PLL circuits are also provided, including a PLL circuit with separate analog and digital grounds.

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