Plural oscillator phase continuous frequency encoder

Details Plural oscillator phase continuous frequency encoder Plural oscillator phase continuous frequency encoder

1976-11-12

1977-12-13

Grimm, Siegfried H.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

325163, 331 49, 331 56, 331117R, 331179, 332 21, 332 23R, H03C 302

Patent

active

040631966

ABSTRACT:
A frequency modulation oscillator is provided having three or more output frequencies corresponding to three or more possible input signals, the output frequency being a phase continuous frequency modulated signal with no discontinuities. For each desired output frequency, there is an input amplifier, responsive to an input binary signal, the output of that amplifier being summed with the outputs of the other amplifiers. For each input amplifier there is an active feedback network containing a delay element which will produce oscillation in the associated amplifier, the active feedback network from each amplifier being isolated from the other amplifiers and feedback networks.

REFERENCES:
patent: 2840713 (1958-06-01), Wulfsberg
patent: 3533019 (1970-10-01), Knirsch
Stewart, "Parallel-Network Oscillators", Proceedings of the IRE, vol. 43, May 1955, pp. 589-595.

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