Patent attributes
A high-frequency amplifier includes: a carrier amplifier which amplifies a first signal; a peak amplifier which amplifies a second signal; a first matching circuit which is connected to the output terminal of the carrier amplifier; a second matching circuit which is connected to the output terminal of the peak amplifier; a first transmission line which is connected between the first matching circuit and the second matching circuit, and has an electric length that is less than ¼ of the wavelength of the center frequency of a predetermined frequency band. The phase rotation by a series inductor which is included in each of the first matching circuit and the second matching circuit and has one end that has been grounded is opposite to the phase rotation by the first transmission line.
