Arc-cosine phase modulators

Details Arc-cosine phase modulators Arc-cosine phase modulators

1977-07-20

1978-06-13

Kominski, John

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

307262, 328142, H03C 300

Patent

active

040951960

ABSTRACT:
Arc-cosine phase modulation is achieved by transforming the baseband signal with a tanh.sup.-1 transformation function, by modulating a carrier signal with a quadrature sum of two exponential signals related to the inverse hyperbolic tangent signal, and by hard limiting and filtering the modulated signal.

REFERENCES:
patent: 3777275 (1973-12-01), Cox
patent: 3798573 (1974-03-01), Seidel

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