Voltage-controlled oscillator and communication apparatus using same
US6411168B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 21, 2001 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Feb 21, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B5/1243
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A voltage-controlled oscillator is constructed to greatly reduce the number of parts required, its overall size, and manufacturing cost. The voltage-controlled oscillator includes first and second resonance circuits, first and second oscillation circuits, a buffer circuit amplifying the oscillation signals output from the first and second oscillation circuits, and an output-matching circuit. In addition, the voltage-controlled oscillator includes a first switching circuit for controlling the oscillation of the first oscillation circuit and a second switching circuit for controlling the oscillation of the second oscillation circuit. The impedance changing of the matching circuit is simultaneously performed while switching between the switching circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.