| 摘要 |
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.
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