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Zhiqiang Wang, Jiawei Liu, Jun Wang, Guangrong Yue,wangzq@std.uestc.edu.cn,842927584@qq.com,junwang@uestc.edu.cn,yuegr@uestc.edu.cn
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 4, Pages 560-570 doi: 10.1631/FITEE.2000451
Keywords: 超大规模相控阵;毫米波;波束倾斜;Zadoff-Chu;单载波频域均衡
Research on the Impact of Mining in Steep Seam on Ground Struc ture
Gao Mingzhong,Wang Lieping
Strategic Study of CAE 2007, Volume 9, Issue 11, Pages 142-146
According to the complex geologic condition of deep excavat ion in Huainan, probability-integral method is ewployed to study the for surface displacement due to coal extraction by optimization mining layouts. Correlation parameters about subsidence under thick loose overburden and duplication mining are obtained. The results obtained may provide guidance for the subsidence-administrating. It is valuable of this paper to other coal mines which have similar geological and mining conditions.
Keywords: steep seam surface movement and deformation probability-integral method predictions
Dot-shaped beamforming analysis of subarray-based sin-FDA Research Article
Bo Wang, Jun-wei Xie, Jing Zhang, Jia-ang Ge,wb_wangbo1991@163.com
Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 10, Pages 1429-1444 doi: 10.1631/FITEE.1800722
Keywords: 频率分集阵列;子阵频率分集阵列;解耦;点状波束形成
Miniaturized Rotman lens with applications to wireless communication Research Articles
Bao-hua SUN, Qiu-yan LIANG, Gao-nan ZHOU
Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 1, Pages 144-158 doi: 10.1631/FITEE.1900501
Keywords: Rotman lens Miniaturization Multibeam Beamformer Wireless communication
Beamforming and fronthaul compression design for intelligent reflecting surface aided cloud radio access networks Research Article
Yu ZHANG, Xuelu WU, Hong PENG, Caijun ZHONG, Xiaoming CHEN,yzhang@zjut.edu.cn,ph@zjut.edu.cn,caijunzhong@zju.edu.cn,chen_xiaoming@zju.edu.cn
Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 1, Pages 31-46 doi: 10.1631/FITEE.2100307
Keywords: Cloud radio access network (C-RAN) Intelligent reflecting surface (IRS) Transmit beamforming Fronthaul compression
Yiming Yu,Zhilin Chen,Chenxi Zhao,Huihua Liu,Yunqiu Wu,Wen-Yan Yin,Kai Kang
Engineering 2023, Volume 22, Issue 3, Pages 125-140 doi: 10.1016/j.eng.2022.04.023
This article presents a 39 GHz transceiver front-end chipset for 5G multi-input multi-output (MIMO) applications. Each chip includes two variable-gain frequency-conversion channels and can support two simultaneous independent beams, and the chips also integrate a local-oscillator chain and digital module for multi-chip extension and gain-state control. To improve the radio-frequency performance, several circuit-level improvement techniques are proposed for the key building blocks in the front-end system. Furthermore, an advanced low-temperature co-fired ceramic process is developed to package the 39 GHz dual-channel transceiver chipset, and it achieves low packaging loss and high isolation between the two transmitting (TX)/receiving (RX) channels. Both the chip-level and system-in-package (SIP)-level measurements are conducted to demonstrate the performance of the transceiver chipset. The measurement characteristics show that the TX SIP provides 11 dB maximum gain and 10 dBm saturated output power, while the RX SIP achieves 52 dB maximum gain, 5.4 dB noise figure, and 7.2 dBm output 1 dB compression point. Single-channel communication link testing of the transceiver exhibits an error vector magnitude (EVM) of 3.72% and a spectral efficiency of 3.25 bit·s−1·Hz−1 for 64-quadrature amplitude modulation (QAM) modulation and an EVM of 3.76% and spectral efficiency of 3.9 bit·s−1·Hz−1 for 256-QAM modulation over a 1 m distance. Based on the chipset, a 39 GHz multi-beam prototype is also developed to perform the MIMO operation for 5G millimetre wave applications. The over-the-air communication link for one- and two-stream transmission indicates that the multi-beam prototype can cover a 5–150 m distance with comparable throughput.
Keywords: 5G Multi-beam Multi-input multi-output Millimeter-wave Transceiver Wireless communication
Modeling of a dynamic dual-input dual-output fast steeringmirror system Article
Hong SONG, Jia-heng ZHANG, Ping YANG, Hao-cai HUANG, Shu-yue ZHAN, Teng-jun LIU, Yi-lu GUO, Hang-zhou WANG, Hui HUANG, Quan-quan MU, Mei-fen FANG, Ming-yuan YANG
Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 10, Pages 1488-1498 doi: 10.1631/FITEE.1601221
Keywords: Fast steering mirror Dynamic system Input-output coupling Physical modeling Subspace identification
Xun Li, Baoyan Duan, Yiqun Zhang, Yongxin Guo
Engineering 2023, Volume 30, Issue 11, Pages 63-74 doi: 10.1016/j.eng.2023.07.016
This work presents an optimal design method of antenna aperture illumination for microwave power transmission with an annular collection area. The objective is to maximize the ratio of the power radiated on the annular collection area to the total transmitted power. By formulating the aperture amplitude distribution through a summation of a special set of series, the optimal design problem can be reduced to
finding the maximum ratio of two real quadratic forms. Based on the theory of matrices, the solution to the formulated optimization problem is to determine the largest characteristic value and its associated characteristic vector. To meet security requirements, the peak radiation levels outside the receiving area are considered to be extra constraints. A hybrid grey wolf optimizer and Nelder–Mead simplex method is developed to deal with this constrained optimization problem. In order to demonstrate the effectiveness of the proposed method, numerical experiments on continuous apertures are conducted; then, discrete arrays of isotropic elements are employed to validate the correctness of the optimized results. Finally, patch arrays are adopted to further verify the validity of the proposed method.
Keywords: Microwave power transmission Beam collection efficiency Ring-shaped beam Annular collection area Grey wolf optimizer Nelder–Mead simplex method
Deceptive jamming discrimination based on range-anglelocalization of a frequency diverse array Article
Zhao-jian ZHANG, Jun-wei XIE, Chuan SHENG, Zhun TANG
Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 9, Pages 1437-1446 doi: 10.1631/FITEE.1601577
Keywords: Frequency diverse array (FDA) Deceptive jamming Range-angle coupling Sum-difference beam Double-pulse
Lu-lu ZHAO, Xing-long JIANG, Li-min LI, Guo-qiang ZENG, Hui-jie LIU
Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 11, Pages 1432-1443 doi: 10.1631/FITEE.1601268
We investigate a collaborative-relay beamforming design for simultaneous wireless information and power transfer. A non-robust beamforming design that assumes availability of perfect channel state information (CSI) in the relay nodes is addressed. In practical scenarios, CSI errors are usually inevitable; therefore, a robust collaborativerelay beamforming design is proposed. By applying the bisection method and the semidefinite relaxation (SDR) technique, the non-convex optimization problems of both non-robust and robust beamforming designs can be solved. Moreover, the solution returned by the SDR technique may not always be rank-one; thus, an iterative sub-gradient method is presented to acquire the rank-one solution. Simulation results show that under an imperfect CSI case, the proposed robust beamforming design can obtain a better performance than the non-robust one.
Keywords: Simultaneous wireless information and power transfer Channel state information Robust beamforming Semidefinite relaxation Iterative sub-gradient
Wideband circular-polarized transmitarray for generating a high-purity vortex beam Correspondence
Liangjie QIU, Xiuping LI, Zihang QI, Wenyu ZHAO, Yuhan HUANG,xpli@bupt.edu.cn
Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 6, Pages 927-934 doi: 10.1631/FITEE.2200539
Keywords: 轨道角动量;涡旋波束;透射阵;宽带;高纯度
An array of two periodic leaky-wave antennas with sum and difference beam scanning for application in target detection and tracking Research Article
Mianfeng HUANG, Juhua LIU,liujh33@mail.sysu.edu.cn
Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 4, Pages 567-581 doi: 10.1631/FITEE.2200473
Keywords: Antenna Leaky-wave antenna (LWA) Substrate-integrated waveguide (SIW) Sum and difference beam Target detection and tracking
Correspondence: A low-profile dual-polarization programmable dual-beam scanning antenna array Perspective
Shichao ZHU, Yuanfan NING, Hongbo CHU, Pei XIAO, Gaosheng LI,Gaosheng7070@vip.163.com
Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 10, Pages 1504-1512 doi: 10.1631/FITEE.2300253
Xin Wang, Long Li, Tie Jun Cui, Mingyu Lu
Engineering 2023, Volume 30, Issue 11, Pages 55-62 doi: 10.1016/j.eng.2023.08.010
An experimental study is conducted on several retro-reflective beamforming schemes for wireless power transmission to multiple wireless power receivers (referred to herein as "targets"). The experimental results demonstrate that, when multiple targets broadcast continuous-wave pilot signals at respective frequencies, a retro-reflective wireless power transmitter is capable of generating multiple wireless power beams aiming at the respective targets as long as the multiple pilot signals are explicitly separated from one another by the wireless power transmitter. However, various practical complications are identified when the pilot signals of multiple targets are not appropriately differentiated from each other by the wireless power transmitter. Specifically, when multiple pilot signals are considered to be carried by the same frequency, the wireless power transmission performance becomes heavily dependent on the interaction among the pilot signals, which is highly undesirable in practice. In conclusion, it is essential for a retro-reflective wireless power transmitter to explicitly discriminate multiple targets' pilot signals among each other.
Keywords: Wireless power transmission Microwave antenna array Retro-reflective beamforming Pilot signal Multiple access
Optimal design of a large dual-polarization microstrip reflectarray with China-coverage patterns for satellite communications Research Articles
Gang ZHAO, Yong-chang JIAO, Guan-tao CHEN
Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 1, Pages 159-173 doi: 10.1631/FITEE.1900496
Keywords: Reflectarray Dual-polarization Shaped beam Phase-only synthesis
Title Author Date Type Operation
Beam squint effect on high-throughput millimeter-wave communication with an ultra-massive phased array
Zhiqiang Wang, Jiawei Liu, Jun Wang, Guangrong Yue,wangzq@std.uestc.edu.cn,842927584@qq.com,junwang@uestc.edu.cn,yuegr@uestc.edu.cn
Journal Article
Research on the Impact of Mining in Steep Seam on Ground Struc ture
Gao Mingzhong,Wang Lieping
Journal Article
Dot-shaped beamforming analysis of subarray-based sin-FDA
Bo Wang, Jun-wei Xie, Jing Zhang, Jia-ang Ge,wb_wangbo1991@163.com
Journal Article
Miniaturized Rotman lens with applications to wireless communication
Bao-hua SUN, Qiu-yan LIANG, Gao-nan ZHOU
Journal Article
Beamforming and fronthaul compression design for intelligent reflecting surface aided cloud radio access networks
Yu ZHANG, Xuelu WU, Hong PENG, Caijun ZHONG, Xiaoming CHEN,yzhang@zjut.edu.cn,ph@zjut.edu.cn,caijunzhong@zju.edu.cn,chen_xiaoming@zju.edu.cn
Journal Article
A 39 GHz Dual-Channel Transceiver Chipset With an Advanced LTCC Package for 5G Multi-Beam MIMO Systems
Yiming Yu,Zhilin Chen,Chenxi Zhao,Huihua Liu,Yunqiu Wu,Wen-Yan Yin,Kai Kang
Journal Article
Modeling of a dynamic dual-input dual-output fast steeringmirror system
Hong SONG, Jia-heng ZHANG, Ping YANG, Hao-cai HUANG, Shu-yue ZHAN, Teng-jun LIU, Yi-lu GUO, Hang-zhou WANG, Hui HUANG, Quan-quan MU, Mei-fen FANG, Ming-yuan YANG
Journal Article
Optimal Design of Aperture Illuminations for Microwave Power Transmission with Annular Collection Areas
Xun Li, Baoyan Duan, Yiqun Zhang, Yongxin Guo
Journal Article
Deceptive jamming discrimination based on range-anglelocalization of a frequency diverse array
Zhao-jian ZHANG, Jun-wei XIE, Chuan SHENG, Zhun TANG
Journal Article
Optimization of a robust collaborative-relay beamforming design for simultaneous wireless information and power transfer
Lu-lu ZHAO, Xing-long JIANG, Li-min LI, Guo-qiang ZENG, Hui-jie LIU
Journal Article
Wideband circular-polarized transmitarray for generating a high-purity vortex beam
Liangjie QIU, Xiuping LI, Zihang QI, Wenyu ZHAO, Yuhan HUANG,xpli@bupt.edu.cn
Journal Article
An array of two periodic leaky-wave antennas with sum and difference beam scanning for application in target detection and tracking
Mianfeng HUANG, Juhua LIU,liujh33@mail.sysu.edu.cn
Journal Article
Correspondence: A low-profile dual-polarization programmable dual-beam scanning antenna array
Shichao ZHU, Yuanfan NING, Hongbo CHU, Pei XIAO, Gaosheng LI,Gaosheng7070@vip.163.com
Journal Article
On Differentiation Among Pilot Signals of Multiple Mobile Targets in Retro-Reflective Beamforming for Wireless Power Transmission
Xin Wang, Long Li, Tie Jun Cui, Mingyu Lu
Journal Article