Telecommunications – Transmitter and receiver at separate stations – Frequency or phase modulation
Patent
1989-06-21
1991-05-28
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at separate stations
Frequency or phase modulation
455 47, 455109, 375 61, 332170, H04B 100
Patent
active
050201336
ABSTRACT:
Phase or frequency modulators which utilize phase generators rather than se shifters to produce low frequency input voltages to single side band modulators. Two phase generators are used to supply the two low frequency input ports of a single side band modulator of the 90.degree. phase shift/side band cancellation type, with the voltage dividers of one phase generator being adjusted so that its output is displaced 90.degree. in phase from the output of the other phase generator.
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Charouel Lisa
Clohan Paul S.
Eisenzopf Reinhard J.
Elbaum Saul
Miller Guy M.
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