Amplitude-modulated transmitter with controlled carrier value
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United States of America Patent
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Dec 30, 1986
Grant Date -
N/A
app pub date -
Jul 24, 1984
filing date -
Aug 12, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An amplitude-modulated transmitter wherein the carrier value (T) is controlled in accordance with an improved HAPUG (controlled-carrier) method. Increased energy saving with simultaneous increase of the signal-to-noise ratio at the reception site is achieved by controlling the carrier along a static characteristic (SK) which begins, with a decreasing modulation level (P), with a residual carrier value (R), drops with increasing modulation levels to a minimum carrier value (T.sub.min) and passes into an ideal carrier-control characteristic only above a first level value (P.sub.1). Additional dynamic control results in a reduction in cross-over distortions.
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