Particle swarm optimization for design of class-E amplifier

Abstract

The class-E amplifier is one of the switching amplifiers, which satisfies the class-E switching conditions. It is, however, difficult to determine the values of the passive elements included in the circuit for achieving the class-E switching conditions. The particle swarm optimization algorithm for designing the class-E amplifier is presented in this paper. To reduce the computational cost and consider the nonlinear effects of MOSFET in the amplifier, a circuit simulator which finds the steady-state solution is introduced. Moreover, OpenMP, which is an API for multi-platform shared-memory parallel programming, is used in the developed program to accelerate the proposed procedure. In a design example, the class-E amplifier, the element values of which were obtained by the particle swarm optimization, showed a good performance.