发明名称 |
INTEGRATED CIRCUITS, COMMUNICATION UNITS AND METHODS OF CANCELLATION OF INTERMODULATION DISTORTION |
摘要 |
A wireless communication unit includes a transmitter for processing a baseband transmit signal to produce a first radio frequency signal. A receiver is arranged to convert a second radio frequency signal to a baseband receive signal, where the receiver has a summation module arranged to add a cancellation signal to the baseband receive signal. A selectivity element is arranged to couple the transmitter and the receiver to an antenna, where a reduced portion of the first radio frequency signal is introduced into the second radio frequency signal thereby creating a second order inter-modulation distortion component in the baseband receive signal. An adaptive estimator module has a filter for filtering the baseband receive signal to remove dc offsets associated with the second order inter-modulation distortion component and generate the cancellation signal based on the baseband transmit signal and the filtered baseband receive signal for inputting to the summation module.
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申请公布号 |
US2011195672(A1) |
申请公布日期 |
2011.08.11 |
申请号 |
US20100704484 |
申请日期 |
2010.02.11 |
申请人 |
PRATT PATRICK;PLUMB WILLIAM;GAULT SOPHIE;CHUNG PEI-SHIUN |
发明人 |
PRATT PATRICK;PLUMB WILLIAM;GAULT SOPHIE;CHUNG PEI-SHIUN |
分类号 |
H04B1/10;H04B1/44 |
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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