Variable-Load Constant-Efficiency Power Amplifier for Mobile Communications Applications

Leuzzi, Giorgio ; Micheli, Claudio (2003) Variable-Load Constant-Efficiency Power Amplifier for Mobile Communications Applications. In: Gallium Arsenide applications symposium. GAAS 2003, 6-10 October 2003, Munich.
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Abstract

A SiGe HBT Class-B power amplifier has been developed with a voltage-controlled variable loaf,for constant efficiency also a low power levels.The output matching network includes varactor diodes that can change the load impedance at the collector of the transistor.The load line can therefore be adjusted to provide a variable output power saturation level,shifting the peak of the efficiency to the desired power level.Constant efficiency over a wide input power range is obtained.This amplifier minimises power consumption for variable output power applications,as required in mobile communications systems.

Abstract
Document type
Conference or Workshop Item (Paper)
Creators
CreatorsAffiliationORCID
Leuzzi, Giorgio
Micheli, Claudio
Subjects
DOI
Deposit date
17 Jun 2004
Last modified
17 Feb 2016 13:57
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