Broadband frequency multiplier
US6564045B1 · kind B1 · utility
21Cited by
2References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 14, 1999 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Dec 14, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D2200/009
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An LO generation circuit generates an LO signal by doubling and quadrupling the frequency of a VCO signal. The frequency doubling and quadrupling provides high VCO-RF isolation as well as suppression of spurious noise signals in the LO output. The frequency doubler takes a quadrature signal input and utilizes mixer cores having double balanced transistor pairs to provide an output signal having doubled frequency but maintaining the phase balance of the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.