A simple circuit synthesis method for microwave class-F ultra-high-efficiency amplifiers with reactance-compensation circuits
K Honjo - Solid-State Electronics, 2000 - Elsevier
A class-F amplifier circuit by which the transistor load impedance, for even-order higher
harmonics, can be kept “zero” and that for odd-order higher harmonics can be kept “open”
without affecting the impedance at the fundamental frequency has been developed. This
circuit basically consists of transmission lines with lengths equal to a half wavelength and a
quarter wavelength at the fundamental frequency where the residual reactance at the
fundamental frequency, due to the higher harmonic-frequency circuits, is compensated …
harmonics, can be kept “zero” and that for odd-order higher harmonics can be kept “open”
without affecting the impedance at the fundamental frequency has been developed. This
circuit basically consists of transmission lines with lengths equal to a half wavelength and a
quarter wavelength at the fundamental frequency where the residual reactance at the
fundamental frequency, due to the higher harmonic-frequency circuits, is compensated …
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