
基本信息:
- 专利标题: QUADRATURE DEMODULATOR
- 申请号:EP12758261.7 申请日:2012-03-08
- 公开(公告)号:EP2688262A1 公开(公告)日:2014-01-22
- 发明人: MATUSHIMA, Sadao , FUKUCHI, Toshihide , TAKAHASHI, Kei
- 申请人: Furukawa Electric Co., Ltd. , Furukawa Automotive Systems Inc.
- 申请人地址: 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo 100-8322 JP
- 专利权人: Furukawa Electric Co., Ltd.,Furukawa Automotive Systems Inc.
- 当前专利权人: Furukawa Electric Co., Ltd.,Furukawa Automotive Systems Inc.
- 当前专利权人地址: 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo 100-8322 JP
- 代理机构: advotec.
- 优先权: JP2011055253 20110314
- 国际公布: WO2012124586 20120920
- 主分类号: H04L27/38
- IPC分类号: H04L27/38 ; G01S7/285 ; H04B1/30 ; H04L27/00
摘要:
Provided is a quadrature demodulator capable of appropriately correct an amplitude error and a quadrature error even with respect to a pulse-modulated signal. In the quadrature demodulator 100, in order to compensate an amplitude error and a quadrature error, the phase adjuster 112 is provided in the local oscillation unit 110, and the quadrature detection error detector 131 and the quadrature detection error compensator 132 are provided in the signal processing unit 130. The quadrature detection unit 120 outputs two sets of I and Q-components of an RF signal using two LO signals that have been phase-shifted by the phase adjuster 112. In the quadrature detection error detector 131, an amplitude error and a quadrature error are calculated using the two sets of I and Q-components. The quadrature detection error compensator 132 compensates a received signal using the amplitude error and the quadrature error.
摘要(中):
提供了一种正交解调器,即使对于脉冲调制信号也能够适当地校正振幅误差和正交误差。 在正交解调器100中,为了补偿幅度误差和正交误差,相位调整器112被提供在本地振荡单元110中,并且正交检测误差检测器131和正交检测误差补偿器132被设置在信号中 处理单元130.正交检测单元120使用已由相位调整器112移相的两个LO信号输出RF信号的两组I和Q分量。在正交检测误差检测器131中, 使用两组I和Q分量计算正交误差。 正交检测误差补偿器132使用幅度误差和正交误差补偿接收的信号。
IPC结构图谱:
H | 电学 |
--H04 | 电通信技术 |
----H04L | 数字信息的传输,例如电报通信 |
------H04L27/00 | 调制载波系统 |
--------H04L27/02 | .调幅载波系统,例如应用通/断键控的;单边带或残留边带调制 |
----------H04L27/34 | ..幅度和相位调制载波系统,例如正交调幅载波系统 |
------------H04L27/38 | ...解调器电路,接收机电路 |