To provide technology which can control of directivity of transmission of an array antenna and which can reduce processing load when correcting distortions of transmission signals output from an amplifier.
A weight/correction value calculation part 4 calculates transmission weight SW to control directivity of transmission of an array antenna 1. A distortion correction value calculation part calculates a distortion correction value DC to correct distortion of a signal amplified by an amplifier 307 based on a transmission signal output from the amplifier 307. An adjustment value calculation part 302 calculates an adjustment value α in relation to the transmission signal input into the amplifier 307 from the transmission weight SW and the distortion correction value DC. A transmission signal adjustment part 303 adjusts a transmission complex signal SS2 based on the adjustment value α in order to control the directivity of the transmission of the array antenna and to correct the distortion of the transmission signal output from the amplifier 307 simultaneously.
NARITA MASAHIRO
OSHIMA YOSHITAKA
KOYAMA YOHEI
| JP2005318328A | 2005-11-10 | |||
| JPH1065570A | 1998-03-06 |
Takahiro Arita