Doherty amplifier
AssigneeMitsubishi Electric Corporation
InventorsKei FUKUNAGA, Yuji KOMATSUZAKI, Shintaro SHINJO
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Abstract
A Doherty amplifier includes: amplifiers including a main amplifier and an auxiliary amplifier; output circuits for increase in back-off amount including a first output circuit disposed between the main amplifier and an output combination unit provided by the amplifiers, and having a first electric length, and a second output circuit disposed between the auxiliary amplifier and the output combination unit, and having a second electric length; and a frequency characteristic compensation circuit for band broadening disposed electrically in parallel to the first output circuit, for compensating for the frequency characteristics of the impedances in the output circuits.
Claims10
A Doherty amplifier comprising:
- amplifiers including a main amplifier and an auxiliary amplifier;
- output circuits for increase in back-off amount including a first output circuit disposed between the main amplifier and an output combiner provided by the amplifiers, and having a first electric length, and a second output circuit disposed between the auxiliary amplifier and the output combiner, and having a second electric length;
- and
- a frequency characteristic compensation circuit for band broadening disposed electrically in parallel to the first output circuit, to compensate for frequency characteristics of impedances in the output circuits.
Dependencies are inferred from the claim text.