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Class E RF/microwave power amplifier: linear "equivalent" of transistor's nonlinear output capacitance, normalized design and maximum operating frequency vs. output capacitance

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3 Author(s)
Mediano, A. ; Dept. of Electron. Eng. & Commun., Zaragoza Univ., Spain ; Molina, P. ; Navarro, J.

Previous studies led by the authors yield a maximum operating frequency value for a class E amplifier considering a linear capacitance shunting the device. This linearity also appears in most classical mathematical analyses published so far. This paper faces the problem of finding a linear equivalent capacitance (easy to handle) of the nonlinear voltage-dependent output capacitance of the semiconductor device. A novel definition for equivalence is herein presented, as well as further important consequences in the class E amplifier's normalisation and design and in the frequency scheme.

Published in:

Microwave Symposium Digest. 2000 IEEE MTT-S International  (Volume:2 )

Date of Conference:

11-16 June 2000