Initiating spread spectrum modulation

Details Initiating spread spectrum modulation Initiating spread spectrum modulation

2006-07-19

2010-10-12

Tse, Young T. (Department: 2611)

Pulse or digital communications

Spread spectrum

Reexamination Certificate

active

07813410

ABSTRACT:
An apparatus and a method to initiate spread spectrum modulation have been presented. In one embodiment, a spread spectrum off to spread spectrum on transition circuit is used to start spread spectrum modulation. The spread spectrum off to spread spectrum on transition circuit may include a phase lock loop (PLL) to output a clock signal. The spread spectrum off to spread spectrum on transition circuit may further include a control block coupled to the PLL to cause the PLL to lock the clock signal to a predetermined center frequency before transitioning from a non-spread spectrum mode into a spread spectrum mode.

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