Low power voltage controlled oscillator
US8766735B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2012 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Dec 25, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B5/124
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An enhanced negative resistance voltage controlled oscillator (VCO) is provided, in which the body of each transistor within a pair of cross-coupled transistors is coupled to the gate of the same transistor through a resistor. The body transconductance is employed to enhance the negative resistance of the cross-coupled pair of transistors. At the same time, a forward body bias voltage reduces the threshold voltage of the cross-coupled pair to allow the VCO to operate at a low power supply voltage. Further, the resistor connected between the body and the drain of each transistor voids the leakage in the substrate, and thus, reduces power consumption of the VCO further. This VCO provides low power operation with enhanced figure of merit without employing any extra inductors besides the inductors that are part of the LC tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.