发明授权
- 专利标题: Method and apparatus for I/Q imbalance compensation
- 专利标题(中): 用于I / Q不平衡补偿的方法和装置
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申请号: US11452824申请日: 2006-06-14
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公开(公告)号: US07830954B2公开(公告)日: 2010-11-09
- 发明人: Jared Welz , Henrik Jensen
- 申请人: Jared Welz , Henrik Jensen
- 申请人地址: US CA Irvine
- 专利权人: Broadcom Corporation
- 当前专利权人: Broadcom Corporation
- 当前专利权人地址: US CA Irvine
- 代理机构: Brake Hughes Bellermann, LLP
- 主分类号: H04B1/38
- IPC分类号: H04B1/38 ; H04B17/00 ; H03D3/00
摘要:
Various embodiments are disclosed relating to a wireless transceiver. In an example embodiment, a method of compensating for phase imbalance and amplitude imbalance between corresponding in-phase signals and quadrature-phase signals includes providing a plurality of test tones of various frequencies to a receiver and determining, for each of the test tones, a respective phase imbalance and a respective amplitude imbalance between an in-phase (I) signal and a quadrature-phase (Q) signal of the test tone. The example method also includes determining a set of filter coefficients based on the determined phase and amplitude imbalances of the plurality of test tones and applying the set of filter coefficients to a plurality of filters. In the example method, a phase imbalance between an I signal and a Q signal of a received wireless signal is compensated for using a first filter of the plurality of filters. Further, an amplitude imbalance between the I and Q signals of the received wireless signal is compensated for using a second filter of the plurality of filters.
公开/授权文献
- US20070291883A1 Method and apparatus for I/Q imbalance compensation 公开/授权日:2007-12-20
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