System and method for generating local oscillator (LO) signals for a quadrature mixer
US7605669B2 · kind B2 · utility
12Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 2006 |
| Grant date | Oct 20, 2009 |
| Priority date | — |
| Expiry date | Dec 6, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B27/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system for generating local oscillator (LO) signals for a quadrature mixer includes an oscillator configured to provide a reference frequency signal, at least one frequency divider configured to divide the reference frequency signal into three offset phase signals, a first summing circuit configured to generate two nominal 90 degree offset phase signals from the three offset phase signals, and a second summing circuit configured to generate at least two amplitude-corrected 90 degree offset-phase quadrature signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.