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A 6x-oversampling 10GS/s 60GHz polar transmitter with 15.3% average PA efficiency in 40nm CMOS Host Publication: European Solid-State Circuits Conference Authors: K. Khalaf, V. Vidojkovic, J. R. Long and P. Wambacq Publisher: IEEE Publication Year: 2015 ISBN: 978-1-4673-7470-5
Abstract: A polar TX based on a 10GSample/s RF-DAC aimed at 802.11ad applications realizes more than 30dB alias attenuation and exceeds 3GHz input bandwidth with 6x oversampling factor. The PA drain efficiency is 29.8% with a Psat of 10.8dBm. Average TX output power is 5.3dBm with 15.3% PA efficiency running QPSK at 3.3Gb/s datarate and ᆫ.6dB EVM. Corresponding 16-QAM values are: 3.6dBm with 11.6% at 6.7Gb/s and ᆦ.1dB EVM. The 0.18mm2 TX core in 40nm bulk-CMOS consumes 40.2mW from 0.9V.
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