Polyphase numerically controlled oscillator and method for...

Details Polyphase numerically controlled oscillator and method for... Polyphase numerically controlled oscillator and method for...

2006-09-19

2006-09-19

Kinkead, Arnold (Department: 2817)

Oscillators

Polyphase output

C331S046000, C331S049000, C331S074000, C331S002000, C327S105000, C327S106000, C327S107000

Reexamination Certificate

active

07109808

ABSTRACT:
A polyphase numerically controlled oscillator (PNCO) is defined to include a plurality of sub-numerically controller oscillators (SNCO's). Each SNCO is capable of receiving a clock signal at a first clock rate and an assigned phase offset signal. Each SNCO is configured to generate a digital waveform for the assigned phase offset signal. The PNCO also includes a plurality of frequency multipliers for generating a frequency multiplied representation of the digital waveform generated by each SNCO. The PNCO further includes a multiplexer configured to receive output from each of the frequency multipliers according to the first clock rate. The multiplexer is further configured to receive a select signal, wherein the select signal triggers the multiplexer at a second clock rate.

REFERENCES:
patent: 6411093 (2002-06-01), Schwilch et al.

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