Two port voltage controlled oscillator for use in wireless...

Details Two port voltage controlled oscillator for use in wireless... Two port voltage controlled oscillator for use in wireless...

2006-01-17

2006-01-17

Shingleton, Michael B (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Particular frequency control means

C331S185000, C331S074000, C331S077000, C331S016000, C331S17700V, C331S135000, C327S268000, C327S276000, C327S283000

Reexamination Certificate

active

06987423

ABSTRACT:
A voltage controlled oscillator (VCO) for use in a personal area network synthesizer includes a delay cell (100), a first current amplifier (201, 203) for amplifying an input current, a resister capacitor (RC) tuning network (207, 209, 211) for varying the amount of amplification and delay of an output of the first current amplifier. A second current amplifier (213, 215) is then used for amplifying an output current from the RC tuning network. The invention includes a unique composite voltage variable capacitor (CVVC) (300) for precisely tuning the amount of delay presented by the delay cell. The unique topology of the delay cell (100) allows it to be readily used in voltage controlled oscillators (VCOs) operable at frequencies above 1 GHz.

REFERENCES:
patent: 5880631 (1999-03-01), Sahota
patent: 6011443 (2000-01-01), Chen et al.
patent: 6175279 (2001-01-01), Ciccarelli et al.
patent: 6304149 (2001-10-01), Kim
patent: 6348839 (2002-02-01), Aramaki
patent: 6566970 (2003-05-01), Ingino, Jr.
patent: 6803831 (2004-10-01), Nishikido
patent: 2002/0014925 (2002-02-01), Ochiai

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