| 摘要 |
The power amplifier device comprises one or more transistors ( 16 ) with an output electrode and on top of that a thin-film capacitor. The capacitor comprises a first conductive layer ( 18 ), that is also the output terminal of the transistor. It further comprises a first dielectric layer ( 20 ) and a second conductive layer ( 22 ), that is connected by at least one first connecting wire ( 30 ) to said first conductive layer ( 18 ). A second connecting wire ( 34 ) connects said second conductive layer ( 22 ) to an output terminal of the power amplification device ( 40 ). In this manner a parallel LC circuit is created, and it is designed such that said parallel LC circuit shows resonance at a harmonic of a frequency (2Fo, 3Fo, 4Fo, 5Fo and so on) amplified by said power amplifier.
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