Patent Number: 8,717,114

Title: Low-noise fine-frequency tuning

Abstract: Circuits, methods, apparatus, and code that provide low-noise and high-resolution electronic circuit tuning. An exemplary embodiment of the present invention adjusts a capacitance value by pulse-width modulating a control voltage for a switch in series with a capacitor. The pulse-width-modulated control signal can be adjusted using entry values found in a lookup table, by using analog or digital control signals, or by using other appropriate methods. The capacitance value tunes a frequency response or characteristic of an electronic circuit. The response can be made to be insensitive to conditions such as temperature, power supply voltage, or processing.

Inventors: Greenberg; Jody (Sunnyvale, CA), Sutardja; Sehat (Los Altos Hills, CA)

Assignee: Marvell World Trade Ltd.

International Classification: H03L 1/02 (20060101)

Expiration Date: 5/06/12018