HF outphasing transmitter using class-E power amplifiers

@article{Beltrn2009HFOT,
  title={HF outphasing transmitter using class-E power amplifiers},
  author={R. Ruiz Beltr{\'a}n and Frederick H. Raab and Arturo Velazquez},
  journal={2009 IEEE MTT-S International Microwave Symposium Digest},
  year={2009},
  pages={757-760}
}
Chireix outphasing systems have been used successfully with power amplifiers operating in class-B and F. However, when class-E PAs are used in these systems, either the efficiency or the dynamic range is poor. The asymmetric combining technique described here uses transmission lines or equivalent networks of different electrical lengths to position the impedance loci to provide good dynamic range while maintaining high efficiency. This in turn allows linear power amplification of amplitude… CONTINUE READING
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