Voltage-controlled oscillator and radar system
US8441324B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 13, 2008 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Jan 9, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B5/1243
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A voltage-controlled oscillator circuit comprises an output terminal for providing an oscillatory output signal thereat, a first inductor, a varactor, and a negative-resistance element. The varactor's capacitance is a function of a tuning potential applied at a first terminal of the varactor. A bias branch is present for coupling a second terminal of the varactor to a bias potential. The bias branch comprises a second inductor or a transmission line. The bias branch may comprise a transmission line the length of which is one quarter wavelength associated with the resonance frequency of the voltage-controlled oscillator circuit. A radar system including a VCO circuit is further disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.