Multiple carrier modulation synthesis

Details Multiple carrier modulation synthesis Multiple carrier modulation synthesis

1976-07-27

1977-07-19

Grimm, Siegfried H.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

325142, 332 11R, 332 21, 332 23R, 332 40, 343108R, G01S 116, G01S 118, H03K 708

Patent

active

040371735

ABSTRACT:
Two carriers are gated on and off in an alternating sequence. The same group of different digital sample point values signifying various modulation levels required for each carrier at successive points in time are read out in timed sequence and applied to modify each of the carrier waves by one sample point value during each period when a carrier wave is gated on to thus modify the carriers in a manner recognized by a receiver as modulation.

REFERENCES:
patent: 3487411 (1969-12-01), Toman
patent: 3808558 (1974-04-01), Toman et al.

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