A 57.5–65.5 GHz Phased-Array Transmit Beamformer in 45 nm CMOS SOI With 5 dBm and 6.1% Linear PAE for 400 MBaud 64-QAM Waveforms
In: IEEE Transactions on Microwave Theory and Techniques, Jg. 69 (2021-03-01), S. 1772-1779
Online
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Zugriff:
This article presents a low-power, high-gain, high-linearity phased-array transmit (Tx) beamformer chip in a 45-nm RFSOI process. An architecture employing a power amplifier with neutralization, a 180° active phase shifter and 11/22/45/90° passive phase shifter result in high linearity and low power consumption. The measured gain is 22 dB with a 3-dB bandwidth of 57.5–65.5 GHz and an ${\mathrm{ OP}}_{1\,{\mathrm{ dB}}}$ and ${\mathrm{ OP}}_{\mathrm{ sat}}$ of 7.5–10 dBm and 9.5–11.5 dBm at 57–64 GHz, respectively. A peak power-added efficiency (PAE) of 14.6% and 17.6% at 60 GHz is achieved at $P_{1\,{\mathrm{ dB}}}$ and $P_{\mathrm{ sat}}$ , respectively. The measured rms phase and gain errors are $ and ${\mathrm{ OP}}_{1\,{\mathrm{ dB}}}$ . Complex modulation measurements using a 400 MBaud 64-QAM waveform show an error vector magnitude (EVM) of 5% (−26 dB) at an average power of 5 dBm and with a dc power consumption of only 52 mW, resulting in a linear PAE of 6.1%. Also, 18–20 Gbps data rates are demonstrated with an EVM < 5% (64-QAM) and < 9% (16-QAM) at 60 GHz. To the author’s knowledge, this work achieves state-of-the-art linearity and efficiency for 60-GHz communication systems.
Titel: |
A 57.5–65.5 GHz Phased-Array Transmit Beamformer in 45 nm CMOS SOI With 5 dBm and 6.1% Linear PAE for 400 MBaud 64-QAM Waveforms
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Autor/in / Beteiligte Person: | Wang, Yaochen ; Chung, Hyunchul ; Ma, Qian ; Rebeiz, Gabriel M. |
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Zeitschrift: | IEEE Transactions on Microwave Theory and Techniques, Jg. 69 (2021-03-01), S. 1772-1779 |
Veröffentlichung: | Institute of Electrical and Electronics Engineers (IEEE), 2021 |
Medientyp: | unknown |
ISSN: | 1557-9670 (print) ; 0018-9480 (print) |
DOI: | 10.1109/tmtt.2020.3039748 |
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