Patent ID: 6281936
Filing Date: 2001-08-28
Classification: H03F

Abstract:
A broadcast transmitter system comprising:signal provision means for providing an information signal;power amplifier means for amplifying the information signal to a broadcast transmission power level, said power amplifier means subjecting the information signal to distortion shifts away from intended values;pre-amp conditioning means for conditioning the information signal before the information signal is amplified by said power amplifier means, said pre-amp conditioning means being located upstream of said power amplifier means, and said pre-amp conditioning means subjecting the information signal to distortion shifts away from intended values;post-amp conditioning means for conditioning the information signal after the information signal is amplified by said power amplifier means, said post-amp conditioning means being located downstream of said power amplifier means, and said post-amp conditioning means subjecting the information signal to distortion shifts away from intended values;first compensating means for modifying the information signal to compensate for the distortion shifts imposed by said post-amp conditioning means, said first compensating means being located upstream of said pre-amp conditioning means;second compensating means for modifying the information signal to compensate for the distortion shifts imposed by said power amplifier means, said second compensating means being located downstream of said first compensating means and upstream of said pre-amp conditioning means; andthird compensating means for modifying the information signal to compensate for the distortion shifts imposed by said pre-amp conditioning means, said third compensating means being located downstream of said second compensating means and upstream of said pre-amp conditioning means.