| 摘要 |
<p>A multimode receiver/down converter architecture for use with narrow channel bandwidth and channel bandwidth system signals is described. Interfering signals for a selected narrowband channel are attenuated using a method that reduces the dynamic range of the signal for further processing. The proposed method can be used with a receiver architecture, such as Direct-Conversion, low IF, Super heterodyne, and the like. The downconverted signal is split into two paths. One signal path is delayed and subtracted from the signal from the other path. By controlling the delay value,the interference signals at a given offset are attenuated. Based on the chosen architecture, the desired signal is placed so that the signal undergoes minimal distortion.</p> |
