Linearizer circuit for frequency modulation oscillator

Details Linearizer circuit for frequency modulation oscillator Linearizer circuit for frequency modulation oscillator

1986-06-09

1987-06-23

Grimm, Siegfried H.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

332 21, 375 44, 375 58, 375 60, 455 42, 455 63, H03C 308

Patent

active

046756183

ABSTRACT:
A system for frequency modulation by a signal, the system including an oscillator having a known linearity distortion, a circuit for selecting one from a plurality of predetermined constants, a circuit for operating on the signal with the selected constant, and a digital to analog converter in an embodiment where the signal is digital, for converting the signal having been operated on to an analog signal for modulating the oscillator is disclosed. One embodiment includes a circuit for determining the magnitude of the input signal.

REFERENCES:
patent: 3353117 (1967-11-01), Renkowitz
patent: 4003004 (1977-01-01), Fletcher et al.

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