发明名称 |
DIRECT CONVERSION RECEIVER AND METHOD FOR CORRECTING PHASE IMBALANCE THEREIN |
摘要 |
A direct conversion receiver and a method for correcting phase imbalance therein is disclosed. An input signal is applied to an in-phase channel and a quadrature channel of the receiver. The input signal is processed by the direct conversion receiver to obtain an in-phase zero intermediate frequency (IF) signal in the in-phase channel and a quadrature zero-IF signal in the quadrature channel. The in-phase zero-IF signal and the quadrature zero-IF signal are filtered to obtain a fixed band signal. A phase imbalance correction value is obtained for the fixed-band quadrature zero-IF signal as a function of the frequency of the fixed-band in-phase zero-IF signal and the fixed-band quadrature zero-IF signal. The in-phase zero-IF signal and the quadrature zero-IF signal are sampled and the phase imbalance correction value is applied using an interpolation to the sampled quadrature zero-IF signal or to the sampled in-phase zero-IF signal to correct the phase imbalance in the direct conversion receiver.
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申请公布号 |
US2009116586(A1) |
申请公布日期 |
2009.05.07 |
申请号 |
US20070933579 |
申请日期 |
2007.11.01 |
申请人 |
INTEL CORPORATION |
发明人 |
ARAMBEPOLA BERNARD;COWLEY NICK |
分类号 |
H04B1/10;H04L27/22 |
主分类号 |
H04B1/10 |
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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