Digital phase shifter

Details Digital phase shifter Digital phase shifter

1994-10-07

1996-05-14

Mis, David

Oscillators

Automatic frequency stabilization using a phase or frequency...

Tuning compensation

327106, 327237, 332103, 332144, H03L 700, H03L 7193

Patent

active

055171567

ABSTRACT:
A digital phase shifter is provided which uses a direct digital synthesizer. The digital phase shifter is provided with a digital phase-shifted waveform signal generator in which a plurality of digital phase-shifted waveform signals having different phase shifts are stored. The generator outputs a digital phase-shifted waveform signal corresponding to a specified phase shift from a phase shift specifying section in synchronism with an oscillation signal from a PLL circuit. The output is converted to an analog form by a D/A convertor to generate a phase-shifted waveform.

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patent: 4965533 (1990-10-01), Gilmore
patent: 5126960 (1992-06-01), Thong
patent: 5146186 (1992-09-01), Vella

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