Multiplex communications – Communication over free space – Combining or distributing information via code word channels...
Patent
1995-12-27
1999-10-26
Ton, Dang
Multiplex communications
Communication over free space
Combining or distributing information via code word channels...
455 134, H04J 1300
Patent
active
059740418
ABSTRACT:
An amplifier circuit for providing an amplified signal in response to an input signal. The amplifier circuit includes an input network for applying the input signal to a selected at least one of a plurality of amplifier stages. An output network is provided for coupling the amplified signal from the selected at least one amplifier stage. The appropriate amplifier stage is selected by a control circuit in response to a desired power value of the amplified signal. By selectively activating only the amplifier stage(s) that are necessary to provide the desired level of output power, increased DC efficiency can be accomplished in applications that require an amplifier which operates linearly over a wide dynamic range.
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Camarillo Richard J.
Kornfeld Richard K.
Wheatley III Charles E.
White Katherine W.
Edmonston Brian S.
Martin Roger W.
Miller Russell B.
Qualcomm Incorporated
Ton Dang
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