Apparatus for FM-modulation of digital signals

Details Apparatus for FM-modulation of digital signals Apparatus for FM-modulation of digital signals

1992-05-29

1994-03-15

Kuntz, Curtis

Pulse or digital communications

Repeaters

Testing

375 45, 375 62, 375 64, 332100, H04L 2710, H04L 2712, H03C 300, H03K 706

Patent

active

052951600

ABSTRACT:
One of a reference phase signal and an orthogonal phase signal is inverted to provide an inverted phase signal. when an arrangement of a local frequency is the same between transmitting and receiving sides, a carrier wave signal is FM-modulated by the reference and orthogonal phase signals. On the other hand, when the above arrangement is different between the transmitting and receiving sides, a carrier wave signal is FM-modulated by the inverted phase signal and the remaining one of the reference and orthogonal phase signals.

REFERENCES:
patent: 4390987 (1983-06-01), Best
patent: 4584540 (1986-04-01), DuBose et al.

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