Patent ID: 8164396
Filing Date: 2012-04-24
Classification: H01P,H03F

Abstract:
1. A harmonic processing circuit, connected between an output terminal of an amplifier and a load resistance, for processing harmonics appearing at the output terminal of the amplifier, comprising: a first impedance adjustment section and a second impedance adjustment section, wherein the first impedance adjustment section comprises a coupled distributed constant line; the coupled distributed constant line receive as input the output of the amplifier, and have a length of ¼ the wavelength (λ) of the fundamental of the output of the amplifier, and wherein the coupled distributed constant line comprises an input side distributed constant line and an output side distributed constant line coupled with the input side distributed constant line so that the coupled distributed constant line process even harmonics at the coupled distributed constant line, and wherein the first impedance adjusting section is configured to adjust input impedance with respect to the even harmonics to one of effectively infinity or zero; and the first impedance adjusting section and the second impedance adjustment section are configured to adjust input impedance with respect to the odd harmonics to the other of effectively infinity or zero.