Load impedance perturbation formulas for class-E power amplifiers

DOI Web Site 5 Citations 4 References Open Access
  • Ohira Takashi
    Research Center for Future Vehicle City, Toyohashi University of Technology

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<p>This paper considers how a class-E amplifier behaves when the load deviates from its nominal impedance. The Kirchhoff’s law and Fourier series formulate the circuit into three simultaneous equations. These equations are decomposed into zeroth- and first-order terms to apply the perturbation technique. The zeroth-order solutions meet the zero-voltage and zero-current switching conditions. The first-order formulas express the DC current consumption, RF output amplitude and phase, equivalent output impedance, and periodic turn-on power dissipation in terms of the load resistance and reactance deviations.</p>

Journal

  • IEICE Communications Express

    IEICE Communications Express 9 (10), 482-488, 2020-10-01

    The Institute of Electronics, Information and Communication Engineers

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