| 摘要 |
<p>In order to boost the output power of a first amplifier (A1) a second amplifier (A2) can increase the supply voltage difference across the first amplifier (A1). However, variations of the supply voltage difference are attended with a comparatively high distortion. In order to minimize this distortion while maintaining the output power a signal-follower circuit (M1, M2, S) generates a direct voltage level of which tracks a first output signal (Vuit1) of the first amplifier (A1), for which purpose the signal-follower circuit (M1, M2, S) is driven by a third amplifier (A3), which compares the first output signal (Vuit1) with a reference signal (Vref).</p> |
