Software aides design of envelope tracking PAs for 5G LTE
An envelope tracking power amplifier (ETPA) using real-time efficiency and linearity measurements for optimising ETPA design, with flexibility to accommodate different 5G signals has been developed by MaXentric Technologies. The use of NI AWR Design Environment, specifically Microwave Office circuit design software and AXIEM 3D planar EM simulator, enabled the designers to significantly reduce PA optimisation time without sacrificing measurement accuracy.
The close correlation between simulation and measurement enabled them to perform most of the optimising in software before physically implementing it on the board, thus reducing the number of iterations that had to be performed.
“NI AWR Design Environment enhances the designer’s experience by significantly reducing optimisation time,” said Johana Yan, lead engineer at MaXentric. “In addition, in envelope tracking, the ability to simultaneously simulate one’s design at the chip, board, and system level has become paramount in enabling next-generation wideband high-efficiency PA design.’’
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