Pulse or digital communications – Systems using alternating or pulsating current – Angle modulation
Patent
1995-11-17
1998-09-22
Vo, Don N.
Pulse or digital communications
Systems using alternating or pulsating current
Angle modulation
375278, 375302, 375303, 375308, 455 42, 455 68, 455113, 455 78, H04L 2710
Patent
active
058126120
ABSTRACT:
A transmitter which can easily suppress diffusion of a spurious signal with a simple constitution, wherein the on/off operations of the transmitting circuit and the carrier signal generating circuit are controlled by the first control signal which rises at the predetermined timing and falls at the predetermined timing, and the on/off operation of the modulator is controlled by the second control signal which gently rises at the same or later timing than the rise timing of the first control signal and gently falls at the same or earlier timing than the fall timing of the first control signal, so that a phenomenon which is similar to pulse modulation of the leaked carrier signal fc becomes hard to be generated, therefore diffusion of the spurious signal can be suppressed.
REFERENCES:
patent: 4639938 (1987-01-01), Kennett
patent: 5130676 (1992-07-01), Mutz
patent: 5473290 (1995-12-01), Scomazzon et al.
Maioli Jay H.
Sony Corporation
Vo Don N.
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