| 摘要 |
An RF power amplifier according to the present invention includes: an RF power amplifying element, a first switch provided in a first transmission path for transmitting a first RF signal output from the RF power amplifying element, a second transmission unit which transmits a second RF signal of higher frequency than the first RF signal output from the RF power amplifying element, and a second second-order harmonic trap circuit connected to an output terminal, and the second transmission unit includes a grounded capacitor, a second transmission path, a Band-I matching circuit, a second switch connected in series to the second transmission path, and the second switch connects the second transmission path to the grounded capacitor when the first RF signal is amplified, and connects the second transmission path to the Band-I matching circuit when the second RF signal is amplified.
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