发明名称 |
Multi-carrier transmitter circuit and communication equipment |
摘要 |
<p>To reduce the size of a multi-carrier transmitter circuit for a mobile communication base station, by suppressing instantaneous peak output power to a small value with respect to a wide-band signal of a few MHz to tens of MHz so that the peak factor of a multi-carrier signal is reduced. <??>In a multi-carrier transmitter circuit for modulating carriers with corresponding input signals to generate modulated signals and then multiplexing said modulated signals and outputting a multiplexed signal, the multi-carrier transmitter circuit is equipped with carrier generators 3-1 to 3-n for generating each said carrier, modulators 5-1 to 5-n for modulating-each carrier with each input signal and outputting said modulated signal, an adder 6 for multiplexing said modulated signals and outputting the multiplexed signal, variable attenuators 2-1 to 2-n for directly or indirectly adjusting a level of each input signal, phase detectors 4-1 to 4-n for detecting a phase of each carrier, and a control circuit 7 for controlling the variable attenuators 2-1 to 2-n in accordance with the phase of each carrier. <IMAGE></p> |
申请公布号 |
EP0982906(A2) |
申请公布日期 |
2000.03.01 |
申请号 |
EP19990116572 |
申请日期 |
1999.08.24 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
ISHIDA, KAORU;MIYAJI, MASAYUKI;KOSUGI, HIROAKI;KUGOU, SHIN'ICHI |
分类号 |
H04L27/26;(IPC1-7):H04L27/26;H04L5/02 |
主分类号 |
H04L27/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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