发明名称 |
DC OFFSET CORRECTION SYSTEM FOR A RECEIVER WITH BASEBAND GAIN CONTROL |
摘要 |
<p>A method and apparatus are provided for providing improved radio frequency (RF) receiver signal correction. For RF receiver circuitry (106) having receive path and a warmup period associated therewith and including at least one analog baseband gain control stage (218) having a gain associated therewith, the method includes the step of performing a DC correction calculation operation during the warmup period to derive a DC correction value having a first component and a second component for each of the at least one gain control stage (218). The DC correction calculation step includes the steps of performing a first closed loop correction (460) of a baseband path to derive the first component of the DC correction value and performing a second closed loop correction (462) of the receive path as a function of the (218) gain during the warmup period to derive the second component of the DC correction value. During operation after the warmup period (464 , 466), an open loop correction is performed for instantaneous DC correction as function of the PMA (218) gain and the DC correction value.</p> |
申请公布号 |
EP1869855(A4) |
申请公布日期 |
2013.05.01 |
申请号 |
EP20060736439 |
申请日期 |
2006.02.28 |
申请人 |
FREESCALE SEMICONDUCTOR |
发明人 |
RAHMAN, MAHIBUR;SHAH, MANISH N.;SOBCHAK, CHARLES L. |
分类号 |
H04L27/08;H04L25/06 |
主分类号 |
H04L27/08 |
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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