摘要 |
During calibration, signals 302 and 304 of opposite phase are applied to the main and envelope paths so that the amplifier transits from saturation to linear operation twice per cycle. The amplitude of the amplifier output 306 is measured and the amplitudes of the peaks which occur during each transition are compared. The peak amplitudes will be the same if the delays in the envelope and main paths are the same but will be different if the delays are unequal. The relative delay between the main and envelope paths is adjusted until equality of pulse amplitude is obtained. |