Differential type voltage controlled oscillator
US6621363B2 · kind B2 · utility
6Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2002 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Mar 18, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B5/124
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A differential type VCO (Voltage Controllable Oscillator) is disclosed. The VCO has a differential amplifier having a couple of transistors and a couple of LC tanks. At each LC tank, a transformer is connected to form a buffer. An oscillating signal is output through the buffer with no power consumption. Additionally, a capacitor is connected to the secondary coil of the transformer to form a bandpass filter, thereby attenuating a harmonic signal included in the oscillating signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.