Phase Coherent FSK Modulator

By Analog Devices
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The standard single channel direct digital synthesizer (DDS) does not switch between frequencies in a phase coherent manner. By design, DDS frequency transitions are phase continues. However, this paper demonstrates how to configure the C multichannel DDS for a robust phase coherent FSK (frequency shift keying) modulator by summing the outputs of the multichannel DDS together. Read More

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