System for suppressing sideband components of angle-modulated wa

Details System for suppressing sideband components of angle-modulated wa System for suppressing sideband components of angle-modulated wa

1976-05-13

1978-02-14

Griffin, Robert L.

325 10, 325138, H04B 160

Patent

active

040741982

ABSTRACT:
A system for suppressing a predetermined part of the sideband components of an angle-modulated wave in a frequency-division multiplex system is disclosed. The system branches the received angle-modulated wave into two angle-modulated waves, one of which is applied as the signal input of a phase modulator. The other of the two branched angle-modulated waves is demodulated to baseband. The demodulated signal is filtered, adjusted in level and phase and then supplied as the inversely modulating signal input of the phase modulator. The output of the phase modulator is therefore a wave which can be reused for transmission of other sideband components. The demodulated and filtered wave is provided as another output of the system.

REFERENCES:
patent: 3132339 (1964-05-01), Boughnou
patent: 3294914 (1966-12-01), Muller

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