| 摘要 |
<p>A power amplifier (20) for operation in at least a first and a second frequency band is disclosed. The power amplifier (20) comprises a transistor (35) for amplifying an input signal of the power amplifier (20). Furthermore, the power amplifier (20) comprises an output coupling network (45) for connecting the power amplifier to a resistive load (55), wherein the output coupling network (45) is operatively connected to an output terminal (40) of the transistor (35), has an output terminal (50) for connection to said resistive load (55), and is configured such that, when the power amplifier (20) is connected to said resistive load (55), the power amplifier (20) is arranged to operate in class E for frequencies in one of the first and the second frequency bands, and to operate in inverse class E for frequencies in the other one of the first and the second frequency band.</p> |
