A Single-Board Integrated Millimeter-Wave Asymmetric Full-Digital Beamforming Array for B5G/6G Applications

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外文摘要：In this article,a single-board integrated millimeter-wave(mm-Wave)asymmetric full-digital beamform-ing(AFDBF)array is developed for beyond-fifth-generation(B5G)and sixth-generation(6G)communica-tions.The proposed integrated array effectively addresses the challenge of arranging a large number of ports in a full-digital array by designing vertical connections in a three-dimensional space and success-fully integrating full-digital transmitting(Tx)and receiving(Rx)arrays independently in a single board.Unlike the traditional symmetric array,the proposed asymmetric array is composed of an 8 × 8 Tx array arranged in a square shape and an 8+8 Rx array arranged in an L shape.The center-to-center distance between two adjacent elements is 0.54 λ0 for both the Tx and Rx arrays,where λ0 is the free-space wave-length at 27 GHz.The proposed AFDBF array possesses a more compact structure and lower system hard-ware cost and power consumption compared with conventional brick-type full-digital arrays.In addition,the energy efficiency of the proposed AFDBF array outperforms that of a hybrid beamforming array.The measurement results indicate that the operating frequency band of the proposed array is 24.25-29.50 GHz.An eight-element linear array within the Tx array can achieve a scanning angle ranging from-47° to+47° in both the azimuth and the elevation planes,and the measured scanning range of each eight-element Rx array is-45° to+45°.The measured maximum effective isotropic radiated power(EIRP)of the eight-element Tx array is 43.2 dBm at 28.0 GHz(considering the saturation point).Furthermore,the measured error vector magnitude(EVM)is less than 3％when 64-quadrature amplitude modulation(QAM)waveforms are used.

外文关键词：

Full-digital beamforming arrayAsymmetric structureSingle-board integratedBeyond fifth-generation and sixth-generationMillimeter-wave communicationComplex modulationPrinted circuit boardVertical connection

作者：

Qingqing Lin、Jun Xu、Kai Chen、Long Wang、Wei Li、Zhiqiang Yu、Guangqi Yang、Jianyi Zhou、Zhe Chen、Jixin Chen、Xiaowei Zhu、Wei Hong

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作者单位：

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

Frontiers Science Center for Mobile Information Communication and Security,Southeast University,Nanjing 210096,China

Purple Mountain Laboratories,Nanjing 211111,China

基金：

National Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaFundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central UniversitiesNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaYouth Talent Promotion Foundation of Jiangsu Science and Technology AssociationStartup Research Fund of Southeast University

项目编号：

2020YFB18049002022YFE02109002242022k600082242022k300036230115261627801TJ-2023-074RF1028623286

出版年：

2024

DOI：

10.1016/j.eng.2024.04.013

工程(英文)

CSTPCDEI

ISSN：2095-8099

年,卷(期)：2024.41(10)