A 28/39-GHz Reconfigurable Phased-Array Transmitter Front-End for 5G New Radio in a 65-nm CMOS

IF 3.4 0 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE microwave and wireless technology letters Pub Date : 2025-03-15 DOI:10.1109/LMWT.2025.3565703

Ruiqi Wang;Yiming Yu;Runyu Liu;Yanpeng Wu;Xin Xie;Zhiguang Chen;Zhinan Jing;Zhixiong Li;Mengqian Geng;Huihua Liu;Chenxi Zhao;Yunqiu Wu;Kai Kang

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Abstract

This article presents a reconfigurable phased-array transmitter (TX) front-end for 5G new radio (NR) in 65-nm CMOS. A reconfigurable up-converter is implemented to support dual-band operation around K-/Ka-bands without increasing LO or intermediate frequency (IF) bandwidth. The circuit moves image signals and spurs outside the passband of the RF channels, achieving a high image rejection ratio (IRR). Measured results show the chip covers both bands of 24–30 GHz and 36–40 GHz with 10–12 GHz LO and 4–6 GHz IF bands, with an IRR over 44 dB. Utilizing a PCB-based Vivaldi antenna array, a four-element phased-array TX front-end system is designed. The beam scanning ranges are ±30° and ±15° at 28 and 39 GHz, respectively. In addition, TX-to-RX wireless communication is demonstrated with the TX system and a K-/Ka-band receiver front-end. The over-the-air (OTA) tests reveal that the data rate is up to 1.2 Gbps/800 Mbps at 27/34.6 GHz over a 1-m distance.

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用于5G新无线电的65纳米CMOS 28/39 ghz可重构相控阵发射机前端

本文提出了一种用于5G新无线电（NR）的65纳米CMOS可重构相控阵发射机（TX）前端。实现了可重构的上变频器，支持K / ka波段的双频工作，而不增加LO或中频（IF）带宽。该电路将图像信号和杂散移动到射频通道的通带之外，实现了高图像抑制比（IRR）。测试结果表明，该芯片覆盖了24 - 30ghz和36 - 40ghz两个频段，10 - 12ghz本端和4 - 6ghz中频频段，IRR超过44 dB。利用基于pcb的Vivaldi天线阵列，设计了一个四元相控阵TX前端系统。在28 GHz和39 GHz下，波束扫描范围分别为±30°和±15°。此外，还演示了TX系统和K / ka波段接收器前端的TX到rx无线通信。空中（OTA）测试表明，在27/34.6 GHz下，在1米距离内的数据速率高达1.2 Gbps/800 Mbps。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE microwave and wireless technology letters

CiteScore

6.00

自引率

0.00%

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