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Digital Phase Adjuster Circuit

Digital Phase Adjuster Circuit

Digital Phase Adjuster Circuit

I am currently working on a college project (on PSK)
In order to decode a PSK 'transmission', I need to be able to 'correct' the phase of a squarewave signal(f=4500Hz).
Is there a simple circuit I can use which will vary the phase of such a signal ( 0  -  180  degrees)?


RE: Digital Phase Adjuster Circuit

Since you have the waveform in squarewave form, it should be easy to convert to logic level. Then send this to a settable digital delay to adjust the phase.

Ten years ago I programmed a Xilinx Field Programmable Gate Array (FPGA) to variably delay the phase of a 2400 Hz tone 0-180 degrees with 1 degree resolution. Very precise and repeatable. A microcontroller or DSP could do this too, or use a tapped digital delay line.

If you must stay analog, try a Phase Locked Loop (PLL) IC.

Good luck!

Kevin VanZuilen "KevinVZ"

RE: Digital Phase Adjuster Circuit

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