Buffering for LC-based stage
US6525617B1 · kind B1 · utility
0Cited by
9References
14Claims
0Family size
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Key dates
| Filing date | Aug 9, 2001 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | Oct 3, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B5/24
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A two-stage ring oscillator system that provides a phase shift of 90° in each of the two stages. Each stage includes an LC-based stage including a voltage controlled oscillator (VCO) and an in-line signal buffer that provides an additional controllable phase shift in the forward path and reduces loading capacitance of each LC-based stage by an estimated 10-50 percent. In-phase and quadrature output signals are provided by the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.