IP2 and IP3 Nonlinearity Specifications for 3G/WCDMA Receivers
High Frequency Electronics, Broadcom Corporation
Chris Liu and Morten Damgaard
In 3G/WCDMA mobile handsets, the direct conversion receiver (DCR) architecture is commonly used due to its simplicity and low cost, where interstage filters are completely eliminated. However, with less filtering, the linearity requirement for a direct conversion receiver is very critical. It is essential to define system linearity requirements properly for the receiver to meet the performance requirements.
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