Switch mode power amplifiers offer high efficiency approaching 100% for an ideal case. This paper discusses the operation mode of broadband switch mode class-E power amplifier designed previously by the authors for UHF applications (600-1000 MHz). A method to extract the waveforms at the die reference plane from the time domain analysis using 50 Ω environment systems is discussed. It has been observed that the designed class-E power amplifier operation was not maintained ideally over the entire band; however, it was operating close to the class-E operation.
2. Gustavsson, U., "Design of an inverse class D amplifier using GaN HEMT technology,", M.S. Thesis, Orebro University, Department of Technology, Sweden, Jun. 2006.
doi:10.1109/JSSC.1975.1050582
3. Al Tanany, A., A. Sayed, and G. Boeck, "Broadband GaN switch mode class E power amplifier for UHF applications," IEEE MTT-S International Microwave Symposium Digest, MTT'09, 761-764, Boston, USA, Jun. 2009.
4. Sokal, N. O. and A. D. Sokal, "Class E --- A new class of high e±ciency tunes single-ended switching power amplifiers," IEEE J. Solid-State Circuits, Vol. 10, Jun. 1975.
doi:10.1109/TMTT.2003.812564
5. Pozar, D. M., Microwave Engineering, 3rd Ed., 183, Wiley, New York, 2005.
6. Kee, S. D., I. Aoki, A. Hajimiri, and D. B. Rutledge, "The class-E/F family of ZVS switching amplifiers," IEEE Trans. on Microw. Theory & Tech., Vol. 51, No. 6, 1677-1690, Jun. 2003.
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