Wideband High Power Amplifier Design

This thesis aims for high power wideband amplifiers suitable for base station instrumentation purposes. A power combing topology is introduced, not only to achieve high power but also good input and output matching. Two kinds of broadband 3-dB quadrature couplers, which are important components in the power combing topology, are designed and implemented. In order to reduce the cost, broadband Wilkinson dividers are designed to replace some of the 3-dB quadrature couplers in the topology. Both NXP LDMOS die and Cree GaN packaged transistors are reviewed for the wideband PA. Two bandwidth extension design methods are studied and developed within this thesis. The design using the Cree GaN packaged transistors was implemented and measured. Beside the high power wideband amplifier design, additional investigation on adaptive matching using duty-cycle control in Class-E power amplifier is presented.

Subject

power amplifier
high power
wideband

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http://resolver.tudelft.nl/uuid:fdf758f2-ea47-44a5-b384-806464750dee

Embargo date

2012-09-01

Part of collection

Student theses

Document type

master thesis

Rights

Files

PDF

Thesis_report_J_LI.pdf

3.32 MB

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