Power amplifier, power distributor, and power combiner

a b aa ba bbIn a power amplifier of the present invention, distributed constant lines and have a total line length corresponding to a ½ wavelength of a fundamental wave so as to invert the phase of a fundamental wave component of a first signal amplified by a first amplification element . A series r...

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Bibliographic Details
Main Authors Morimoto, Shigeru, Adachi, Hisashi
Format Patent
LanguageEnglish
Published 27.12.2005
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Summary:a b aa ba bbIn a power amplifier of the present invention, distributed constant lines and have a total line length corresponding to a ½ wavelength of a fundamental wave so as to invert the phase of a fundamental wave component of a first signal amplified by a first amplification element . A series resonant circuit is connected a tone end between the distributed constant lines and , which invert the phase of a second-order harmonic component, so as to be in parallel connection with the distributed constant lines and . Further, the series resonant circuit is connected at the other end to an output side of the second amplification element . The series resonant circuit resonates with a second-order harmonic frequency, thereby canceling out the second-order harmonic component.