Injection-locked frequency divider
US7557664B1 · kind B1 · utility
20Cited by
1References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2006 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | Oct 31, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B19/14
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An injection-locked frequency divider (ILFD) can go beyond simple frequency division by an even number. In one embodiment, another differential pair of transistors is added to convert the injection signal into differential currents, which are mixed in the original transistor pair such as that of the conventional ILFD shown above. In another, a double-balanced ILFD structure includes multiple ILFD's which are independently tunable to allow phase differences other than quadrature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.