Patent · US Active

Quadrature oscillator

US10826432B2 · kind B2 · utility

0Cited by

1References

17Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Filip Oredsson · Malmö, SE
Andreas Mårtensson · Staffanstorp, SE
Sven Mattisson · Bjärred, SE

Key dates

Filing date	Jan 4, 2017
Grant date	Nov 3, 2020
Priority date	—
Expiry date	Jan 4, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH03B2202/05
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

An oscillator circuit (10) for generating quadrature-related first and second oscillation signals having equal frequencies comprises a first oscillation circuit (VCO_I) configured to generate the first oscillation signal having a first controllable frequency, a second oscillation circuit (VCO_Q) configured to generate the second oscillation signal having a second controllable frequency; and a controller (100) configured to enable and disable oscillation of the first and second oscillation circuits (VCO_I, VCO_Q) and to control the first and second controllable frequencies, such that when the oscillation is enabled, the first and second controllable frequencies are controlled to be initially unequal and then to become equal.

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