Vitesse Semiconductor Corporation

Randy T Heilman

Raymond B Patterson, Iii

Taewon Jung

A stable high-frequency clock pulse apparatus and method including frequency source, overtone crystal unit coupled with a negative resistance oscillator, a bandpass overtone filter and a drive level control is provided. The apparatus can include a frequency multiplier. The frequency source can be a micromechanical resonator.

Method of overtone selection and level control in an integrated circuit CMOS negative resistance oscillator to achieve low jitter

A drive circuitry that drives a vertical cavity surface emitting laser is provided. The drive circuitry includes a modulator, a negative peak timer and a limiter. The negative peak timer causes the modulator to rapidly decrease the magnitude of the output signal of the modulator to dissipate charge stored on the laser. Thus, the vertical cavity surface emitting laser quickly turns off.

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Melbourne, FL, United States of America

Randy T Heilman