发明名称 |
ORTHOGONALITY DETECTOR, AND QUADRATURE DEMODULATOR AND SAMPLING QUADRATURE DEMODULATOR USING DETECTOR THEREOF |
摘要 |
To detect phase mismatches between in-phase and quadrature signals of a quadrature demodulator. The phase mismatches can be detected using the signals obtained by removing high frequency components of output of a multiplier by a low pass filter, the output being the product of the in-phase signals of which low frequency components are removed by a first high pass filter by the quadrature signals of which low frequency components are removed by a second high pass filter.
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申请公布号 |
US2011158353(A1) |
申请公布日期 |
2011.06.30 |
申请号 |
US201113043433 |
申请日期 |
2011.03.08 |
申请人 |
HITACHI, LTD. |
发明人 |
HAYASE SHIGENORI;HORI KAZUYUKI |
分类号 |
H04L27/00 |
主分类号 |
H04L27/00 |
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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