Linear transmitter
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United States of America Patent
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Oct 5, 1993
Grant Date -
N/A
app pub date -
Apr 19, 1991
filing date -
Jun 30, 1989
priority date (Note) -
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Abstract
This invention relates to a linear transmitter which controls the bias voltage of either the drain electrode or collector electrode of an amplifier for radio frequency based on the envelope of the modulated signal, and is characterized in that it controls the bias voltage of the radio frequency amplifier in digital arithmetic processing by generating the envelope using in-phase envelope component and quadrature envelope component obtained from the base band signals.
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