Amplifier and amplifying method

摘要

An amplifier includes: an amplifying device configured to amplify an input signal; and a matching circuit coupled to the amplifying device, and including an impedance transformer and a parallel resonance circuit coupled to a wiring which spans from the impedance transformer to the amplifying device, wherein a circuit length of the impedance transformer is longer than one-fourth of wavelength of an electronic wave having a frequency which is substantially equal to a resonance frequency of the parallel resonance circuit.

主权项

1. An amplifier comprising:
an amplifying device configured to amplify an input signal; and a matching circuit coupled to the amplifying device, the matching circuit being configured to include:
a connecting portion coupled to the amplifying device,an impedance transformer coupled to the connecting portion at an opposing side of the amplifying device, anda parallel resonance circuit coupled to a portion of the connecting portion between the impedance transformer and the amplifying device, wherein a circuit length of the impedance transformer is longer than one-fourth of a wavelength of an electronic wave having a frequency which is substantially equal to a resonance frequency of the parallel resonance circuit.