| 摘要 |
A radio receiver providing compensation for a direct current offset which includes a first frequency converter for converting a signal received by the receiver to first and second intermediate frequency signals, each signal having an angular frequency omegar and being in phase quadrature with respect to each other. All analog-to-digital converter for converting the first and second intermediate frequency signals to first and second intermediate frequency digital signals, each having an angular frequency omegar and being in phase quadrature with respect to each other, a direct current offset being generated within the analog-to-digital converter. A second frequency converter for converting the first and second digital signals and the direct current offset to first and second baseband signals, and low pass filters each having a cutoff frequency omegaT for removing frequency components of the first and second baseband signals which are higher than omegar.
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