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Marchetti, M. (author), Pelk, M.J. (author), Buisman, K. (author), Neo, W.C.E. (author), Spirito, M. (author), De Vreede, L.C.N. (author)A new wideband open-loop active harmonic load–pull measurement approach is presented. The proposed method is based on wideband data-acquisition and wideband signal-injection of the incident and device generated power waves at the frequencies of interest. The system provides full, user defined, in-band control of the source and load reflection...journal article 2008
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Pelk, M.J. (author), Neo, W.C.E. (author), Gajadharsing, J.R. (author), Pengelly, R.S. (author), De Vreede, L.C.N. (author)A three-way Doherty 100-W GaN base-station power amplifier at 2.14 GHz is presented. Simple, but accurate design equations for the output power combiner of the amplifier are introduced. Mixed-signal techniques are utilized for uncompromised control of the amplifier stages to optimize efficiency, as well as linearity. The combination of the above...journal article 2008