In English

A Class-J Power Amplifier with Varactor Based Dynamic Load Modulation

William Hallberg
Göteborg : Chalmers tekniska högskola, 2014. 56 s.
[Examensarbete på avancerad nivå]

In order to reach increasingly higher data rates and energy requirements in mobile networks, energy efficiency and broadband operation in power amplifiers have been driving parameter in the research of wireless transmitters. This thesis presents the theory for a broadband design of a dynamic load modulated class-J power amplifier. Calculations show that a drain efficiency higher than 70% down to an output power back off

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