High Efficiency Transmitter Using Varactor Based Dynamic Load Modulation
Paper in proceedings, 2010

This paper presents results for a dynamic load modulation transmitter where an existing 1 GHz LDMOS power amplifier is combined with a varactor based tuneable load network to produce a dramatic efficiency improvement for modulated signals. The transmitter is combined with a dedicated linearization method to achieve an average PAE of 53% for a WCDMA signal at 7 dB PAPR. The results demonstrate the potential of dynamic load modulation for future transmitters combining flexibility and high efficiency at a low cost.

Author

Christian Fager

GigaHertz Centre

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Haiying Cao

GigaHertz Centre

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Thomas Eriksson

GigaHertz Centre

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Hendrikus Jos

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

GigaHertz Centre

Hossein Mashad Nemati

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

GigaHertz Centre

Ali Soltani Tehrani

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

GigaHertz Centre

Herbert Zirath

GigaHertz Centre

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

IEEE International Microwave Workshop Series on “RF Front-ends for Software Defined and Cognitive Radio Solutions”

37-40

Subject Categories

Telecommunications

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/IMWS.2010.5441006

ISBN

978-1-4244-5752-6

More information

Created

10/7/2017