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AssigneeFreescale Semiconductor, Inc.
InventorsMahibur Rahman, Manish Shah, Charles Sobchak
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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.
A method in radio frequency (RF) receiver circuitry having a warmup period and a receive path associated therewith and including at least one baseband analog gain control stage having a gain and a baseband path associated therewith, the method comprising 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, wherein the step of performing a DC correction calculation operation during the warmup period comprises the steps of:
Radio frequency (RF) receiver circuitry having a warmup period associated therewith, the RF receiver circuitry comprising:
Dependencies are inferred from the claim text.