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AD9361 No-OS Driver RF Bandwidth Parameters

Question asked by tstrickland on Feb 7, 2014
Latest reply on Feb 18, 2014 by mhennerich

We're evaluating the AD9361 for a WiMAX application using the No-OS software and the FMCOMMS2 eval board. For our 14 MHz RF Bandwidth application we found that the rf_rx_bandwidth_hz and rf_tx_bandwidth_hz initialization parameters must be set to at least 16 MHz to produce a clean OFDM tramission with a Tx EVM near the 40 dB spec (at 2.4 GHz). At higher LO frequencies we had to increase these parameters even further. How should these parameters be set compared with the actual occupied RF bandwidth of the waveform?