Method and apparatus for amplitude control using dynamic...

Details Method and apparatus for amplitude control using dynamic... Method and apparatus for amplitude control using dynamic...

2007-10-30

2007-10-30

Lee, Benny (Department: 2817)

Oscillators

Amplitude control or stabilization

Automatic

C331S1170FE, C331S1170FE, C331S167000, C331S182000

Reexamination Certificate

active

11196644

ABSTRACT:
A method, circuit, and/or system for controlling an amplitude and/or limiting or reducing the energy consumed by an LC voltage controlled oscillator (LCVCO). In one embodiment, an oscillator can include: (i) a bias circuit that can provide first and second bias signals; (ii) an oscillator core that can provide a periodic signal with a frequency related to the first bias signal and an amplitude, where the oscillator core can also provide a feedback signal; and (iii) a current/amplitude controller that can control the amplitude by dynamically dusting the first bias signal in response to the feedback signal. Embodiments of the present invention can advantageously provide a reliable and simplified design approach for amplitude control and substantial energy reduction in an oscillator, such as an LCVCO circuit or a Colpitts differential oscillator.

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patent: 2003/0025566 (2003-02-01), Rogers
patent: 2004/0104782 (2004-06-01), Ruffieux

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