摘要 |
<p>A method and apparatus (100) for optimizing the performance of a power amplifier circuit (120) includes a linearity monitor (130) which receives the output signal at lead (117). Adjustable attenuator (110) receives an input signal (105) and adjusts the signal level prior to its presentation to power amplifier (120) in accordance with signal (150) received from linearity monitor (130). One of the intermodulation products generated during a power amplifier's operation is selected. This selection is based upon the intermodulation product's amplitude. Next, the intermodulation product's amplitude is compared to a predetermined threshold. Based upon this comparison, various operating parameters are altered in order to improve the circuit's intermodulation performance or to maximize its operating capacity.</p> |