| 摘要 |
<p>The invention relates to a Multi-band Doherty amplifier (1) for amplifying an input signal (7) in at least two frequency bands with different center frequencies (f1, f2), comprising: a main amplification path (2) with a main amplifier (3), and at least two auxiliary amplification paths (4a, 4b) with respective peak amplifiers (5a, 5b), wherein the main amplifier (3) is wideband matched and a first / second peak amplifier (5a, 5b) of a first / second auxiliary amplification path (4a, 5b) is matched to the first / second center frequency (f1, f2). The invention also relates to a power amplifier module (21) comprising such a Doherty amplifier (1) and to a base station (22) comprising such a power amplifier module (21).</p> |
