Coherent direct digital synthesizer

Details Coherent direct digital synthesizer Coherent direct digital synthesizer

1989-03-17

1990-08-21

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Afc with logic elements

307271, 328 14, 331 25, H03B 1900, H03L 718

Patent

active

049510045

ABSTRACT:
A coherent direct digital waveform synthesizer, capable of generating a waveform in response to a decimally or other non-binary related reference frequency while obtaining the advantages of the use of a binary radix phase accumulator generating binary addresses for a waveform memory. The interface between these elements include a frequency converter including a voltage controlled oscillator and a further binary radix phase accumulator in the feedback path of a phase locked loop. A binary radix related digital waveform synthesizer may be thus made to produce non-binary related frequency waveforms coherent with a non-binary radix reference frequency source, and of decimal or other non-binary radix related resolution.

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