Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Generating sinusoidal output
Patent
1995-10-10
1997-04-08
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Generating sinusoidal output
327100, 327105, 327156, 327158, 327147, 327149, 327336, 327146, 331 1A, 364721, 375373, H03D 324
Patent
active
056191545
ABSTRACT:
A numerical voltage controlled oscillator comprising an integrator for generating an estimated sine waveform and an estimated cosine waveform from a variable control signal; a normalizer, connected to the integrator, for generating a normalization factor from the estimated sine waveform and the estimated cosine waveform; and a multiplier, connected to the normalizer, for multiplying the normalization factor with the estimated sine waveform and the estimated cosine waveform. The multiplication of the estimated sine waveform and the normalization factor produces the sine waveform and the multiplication of the estimated cosine waveform and the normalization factor produces the cosine waveform. The frequency and phase of the sine and cosine waveforms vary with changes in amplitude of the variable control signal.
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Jaffe Steven T.
Strolle Christopher H.
Burke William J.
Callahan Timothy P.
David Sarnoff Research Center Inc.
Le Dinh T.
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