Monday, January 09, 2012

Efficient FSK/PSK Modulator Uses Multichannel DDS to Switch at Zero Crossings

This article describes how two synchronized DDS channels can implement a zero-crossing FSK or PSK modulator. In phase-coherent radar systems, zero-crossing switching reduces the amount of post processing needed for target signature recognition; and zero-crossing switching reduces PSK spectral splatter. Here, the AD9958 two-channel complete DDS is used to switch at the zero crossing.


At 4:21 AM, Anonymous Adi said...

Hi, I'm looking to achieve zero cross BPSK using AD 9958. Can you provides steps specific to my requirement?



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