发明名称 |
WIRELESS COMMUNICATION APPARATUS, DOHERTY AMPLIFIER, AND METHOD FOR CONTROLLING WIRELESS COMMUNICATION |
摘要 |
A wireless communication apparatus includes: a first amplifier configured to amplify an input signal; a second amplifier configured to amplify the input signal when an input level of the input signal is equal to or larger than a given level; an impedance converter configure to switch an load impedance of the first amplifier and output a composite output of an output from the first amplifier and an output from the second amplifier; an impedance controller section configured to control a switching of the load impedance of the first amplifier based on a bandwidth of the input signal; a distortion compensation section configured to perform distortion compensation of the input signal and supply a compensated input signal to the first amplifier and the second amplifier; and a filter section configured to limit a band of a signal output from the impedance converter. |
申请公布号 |
US2014155122(A1) |
申请公布日期 |
2014.06.05 |
申请号 |
US201314049013 |
申请日期 |
2013.10.08 |
申请人 |
FUJITSU LIMITED |
发明人 |
OKAZAKI Yousuke;MAEDA Hiroaki;HONDA Hirotake;SHIZAWA Yoshinobu;OGAWA Hiroyuki;OKAWA Yasuhiro |
分类号 |
H04B1/38 |
主分类号 |
H04B1/38 |
代理机构 |
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代理人 |
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主权项 |
1. A wireless communication apparatus comprising:
a first amplifier configured to amplify an input signal; a second amplifier configured to amplify the input signal when an input level of the input signal is equal to or larger than a given level; an impedance converter configure to switch an load impedance of the first amplifier and output a composite output of an output from the first amplifier and an output from the second amplifier; an impedance controller section configured to control a switching of the load impedance of the first amplifier based on a bandwidth of the input signal; a distortion compensation section configured to perform distortion compensation of the input signal and supply a compensated input signal to the first amplifier and the second amplifier; and a filter section configured to limit a band of a signal output from the impedance converter.
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地址 |
Kawasaki-shi JP |