Testing Power Amplifiers for 802.11ax

This paper examines the demands that the new 802.11ax Wi-Fi standard places upon the design validation, characterization and testing of power amplifiers (PA). With the EVM contribution of the PA limited for 802.11ax to at most -46 dB, greater linearity and dynamic range requirements are needed for the PA and the RF test equipment. This paper defines a number of requirements and techniques for 802.11ax PA testing. The zSeries-PA/FEM test equipment and zSignal software provide a complete solution for qualifying PA performance for operation within an 802.11ax transmitter design.