Architecture for maintaining constant voltage-controlled oscillator gain
US7741919B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2008 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Jul 1, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L2207/06
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A voltage controlled oscillator and a method of operating a voltage-controlled oscillator are disclosed. The oscillator comprises a current controlled oscillator having a variable frequency current output, a first control path for generating a first control current having a first adjustable gain, and a second control path for generating a second control current having a second adjustable gain. A summer is provided for adding the first and second control currents to obtain a summed control current, and for applying the summed control current as an input current to the current controlled oscillator. A control sub-circuit is used for controlling the gain of the first control current as a function of a defined voltage on the second control path to maintain constant the gain of the current output of the current controlled oscillator over a given operating range of the current controlled oscillator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.