首页|A Retrodirective Array Enabled by CMOS Chips for Two-Way Wireless Communication with Automatic Beam Tracking

A Retrodirective Array Enabled by CMOS Chips for Two-Way Wireless Communication with Automatic Beam Tracking

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This article proposes and demonstrates a retrodirective array(RDA)for two-way wireless communica-tion with automatic beam tracking.The proposed RDA is enabled by specifically designed chips made using a domestic complementary metal-oxide semiconductor(CMOS)process.The highly integrated CMOS chip includes a receiving(Rx)chain,a transmitting(Tx)chain,and a unique tracking phase-locked loop(PLL)for the crucial conjugated phase recovery in the RDA.This article also proposes a method to reduce the beam pointing error(BPE)in a conventional RDA.To validate the above ideas simply yet without loss of generality,a 2.4 GHz RDA is demonstrated through two-way communication links between the Rx and Tx chains,and an on-chip quadrature coupler is designed to achieve a non-retrodirective signal suppression of 23 dBc.The experimental results demonstrate that the proposed RDA,which incorporates domestically manufactured low-cost 0.18 pm CMOS chips,is capable of auto-matically tracking beams covering±40° with a reduced BPE.Each CMOS chip in the RDA has a compact size of 4.62 mm2 and a low power consumption of 0.15 W.To the best of the authors'knowledge,this is the first research to demonstrate an RDA with a fully customized CMOS chip for wireless communi-cation with automatic beam tracking.

Automatic beam trackingCMOSRetrodirective arrayTwo-way communication

Jiacheng Guo、Yizhu Shen、Guoqing Dong、Zhuang Han、Sanming Hu

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State Key Laboratory of Millimeter Waves,School of Information Science and Engineering,Southeast University,Nanjing 210096,China

Purple Mountain Laboratories,Nanjing 211111,China

National Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaBig Data Computing Center at Southeast University for numerical calculation

2019YFB2204701618310066202202362250610223

2024

10.1016/j.eng.2023.12.010

工程(英文)

工程(英文)

CSTPCDEI
ISSN：2095-8099
年,卷(期)：2024.37(6)
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