| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power amplifier with minimum backoff and high C/N and a signal peak level adjustment method therefor. <P>SOLUTION: CCDFs of input/output of a CFR section 1, output of a DPD section 2, and loop-back signals of signals output to an antenna are respectively measured by CCDF monitors 11, 13, 22, 24. Further, a peak setter 14 and a peak adjuster 12 are controlled so that PAPR of the CCDF measured by the CCDF monitor 24 is not smaller than that of the CCDF monitor 13. <P>COPYRIGHT: (C)2013,JPO&INPIT |
