A 39GHz 64-Element Phased-Array CMOS Transceiver with Built-in Calibration for Large-Array 5G NR

• Published in: 2019 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) pp. 279 - 282
• Main Authors: Wang, Yun, Wu, Rui, Pang, Jian, You, Dongwon, Fadila, Ashbir Aviat, Saengchan, Rattanan, Fu, Xi, Matsumoto, Daiki, Nakamura, Takeshi, Kubozoe, Ryo, Kawabuchi, Masaru, Liu, Bangan, Zhang, Haosheng, Qiu, Junjun, Liu, Hanli, Deng, Wei, Oshima, Naoki, Motoi, Keiichi, Hori, Shinichi, Kunihiro, Kazuaki, Kaneko, Tomoya, Shirane, Atsushi, Okada, Kenichi
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.06.2019
• Subjects: 39 GHz; 5G New Radio; Calibration; CMOS; Gain; LO phase shifting; LO-feedthrough (LOFT); millimeter wave; Mixers; Phased-array; Radio frequency; Semiconductor device measurement; Transceiver; Transceivers; Tuning
• ISSN: 2375-0995
• DOI: 10.1109/RFIC.2019.8701856

This paper presents a 39GHz 64-element phased-array transceiver based on 4-element transceiver chipset with LO phase shifting architecture and built-in gain phase calibration. A phase-to-digital-convertor (PDC) and a high-resolution phase detection mechanism are proposed. The built-in calibration has an measured accuracy of 0.08-degree RMS phase error and 0.01-dB RMS gain error. The LO phase shifting based transceiver has a 0.04-dB maximum gain variation over the 360 ◦ full tuning range. The proposed pseudo-single-balanced mixer realizes -70 dBm LO-feedthrough (LOFT) cancellation and maximum 0.5° LO-to-LO isolation. The 8TX-8RX phased-array transceiver module 1-m OTA measurement supports 5G new radio (NR) 400MHz 256QAM OFDMA modulation with -30.0dB EVM. The 64-element transceiver has a EIRP MAX of 53dBm. The 4-element chip consumes a power of 1.5W in TX mode and 0.5W in RX mode.