Broadband Printed Cross-Dipole Element with Four Polarization Reconfigurations for Mobile Base Station Array Antenna Applications by Soon-Young Eom, Ic-Pyo Hong, Jong-Myeon Kim

Get full text

Implementation of an Optical-Wireless Network with Spectrum Sensing and Dynamic Resource Allocation Using Optically Controlled Reconfigurable Antennas by E. Raimundo-Neto, J. R. G. da Rosa, M. A. F. Casaroli, I. Feliciano da Costa, A. M. Alberti, Arismar Cerqueira Sodré

“…This work proposes the concept and reports the implementation of an adaptive and cognitive radio over fiber architecture. It is aimed at dealing with the new demands for convergent networks by means of simultaneously providing the functionalities of multiband radiofrequency spectrum sensing, dynamic resource allocation, and centralized processing capability, as well as the use of optically controlled reconfigurable antennas and radio over fiber technology. …”
Get full text

A Novel Beam Downtilt Selection Method for 3D Active Antenna System Based Cellular Network by Kai Wang, Liang Zhang, Guoping Tan

“…Traditional 2D active antenna system can only carry on horizontal beam steering in cellular mobile radio system. …”
Get full text

A Review of Antenna Array Technologies for Point-to-Point and Point-to-Multipoint Wireless Communications at Millimeter-Wave Frequencies by G. Federico, D. Caratelli, G. Theis, A. B. Smolders

“…Particular focus is put on the review of the state-of-the art and most advanced antenna array concepts for point-to-point and point-to-multipoint radio links at said frequencies. …”
Get full text

Wideband Low-Profile 8 × 8 MIMO Antenna Based IFA Pair for Ultrathin 5G Smartphones by Hui Zhou, Di Wu, Mingmin Zhu, Yang Qiu, Guoliang Yu, Hao-Miao Zhou

“…Based on the original antenna, the 5G new radio (NR) band n77 (3.3–4.2 GHz) can be covered without adding any structure. …”
Get full text

Validation of the SMOS Mission for Space Weather Operations: The Potential of Near Real‐Time Solar Observation at 1.4 GHz by M. Flores‐Soriano, C. Cid, R. Crapolicchio

“…SMOS images are affected by a noise of solar origin produced by the Sun appearing in the antenna's field of view. In this paper, we study whether this solar signal is of any use for scientific and space weather observations. …”
Get full text

A Printed LPDA Antenna Fed by a Microstrip Line to Double Sided Parallel Strip Line from Backside by Zhou Yang, Huang Jingjian, Wu Weiwei, Yuan Naichang

“…Using this feeding technique makes the printed LPDA antenna easier to be integrated into radio frequency (RF) circuits. …”
Get full text

Towards Washable Wearable Antennas: A Comparison of Coating Materials for Screen-Printed Textile-Based UHF RFID Tags by Tiiti Kellomäki, Johanna Virkki, Sari Merilampi, Leena Ukkonen

“…(Radio frequency identification) RFID tags integrated into clothing enable monitoring of people without their conscious effort. …”
Get full text

Development of Ultra-Broadband Base Station Antenna for All Mainstream LTE 700/800/900 MHz Frequency Bands by Doudou Samb, Zhonglin Wu, Mulin Liu, Hu Bin Jie

“…LTE deployment is being accelerated due to its improved radio access structure meeting the requirements of current and next generation of wireless networks. …”
Get full text

Energy-Efficient Hybrid Precoding Scheme Based on Antenna Selection Technology in Massive Multiple-Input Multiple-Output Systems by Jian Jun Ding, Jing Jiang

“…It can reduce the number of radio frequency (RF) chains. However, the power consumption is still very high owing to the large-scale antenna array. …”
Get full text

A Bore-Integrated Patch Antenna Array for Whole-Body Excitation in Ultra-High-Field Magnetic Resonance Imaging by Svetlana S. Egorova, Nikolai A. Lisachenko, Egor I. Kretov, Yang Gao, Xiaotong Zhang, Stanislav B. Glybovski, Georgiy A. Solomakha

“…We propose using patch antenna elements separated by compact dual-loop decoupling resonators to overcome this limitation. …”
Get full text

Design method of energy efficiency optimization in PLC-RF wireless transmission networks by Yueyu JIANG, Haoxin CHENG, Kang WANG, Wenjun DAI, Xiaoyu LIU

“…An energy efficiency optimization transmission scheme using angular information-based channel state information (AI-CSI) was proposed for indoor communications, which integrated the power line communication (PLC) with radio frequency (RF) wireless communication.Specifically, by considering that the Wi-Fi wireless network and the PLC network were the primary and secondary networks, an optimization problem was established to maximize the total energy efficiency of the secondary network.Then, in order to solve the problem, the beam forming weight vector was obtained by using zero-forcing method based on AI-CSI, and an optimization algorithm joint Dinkelbach with Lagrange multiplier was further presented to achieve the optimal power allocation.Finally, computer simulations were given to verify the effectiveness and superiority of the proposed scheme.Besides, the influence of key parameters such as the number of employed antennas and served users was also analyzed.…”
Get full text

Hardware and Deep Learning-Based Authentication Through Enhanced RF Fingerprints of 3D-Printed Chaotic Antenna Arrays by Justin O. McMillen, Fawaz Abdul Razak, Gokhan Mumcu, Yasin Yilmaz

“…Radio frequency (RF) fingerprinting is a hardware-based authentication technique utilizing the distinct distortions in the received signal due to the unique hardware differences in the transmitting device. …”
Get full text

Brush-Painting and Photonic Sintering of Copper Oxide and Silver Inks on Wood and Cardboard Substrates to Form Antennas for UHF RFID Tags by Erja Sipilä, Johanna Virkki, Jianhua Wang, Lauri Sydänheimo, Leena Ukkonen

“…The optimized parameters were utilized to manufacture passive ultra high frequency (UHF) radio frequency identification (RFID) tag antennas. …”
Get full text

Outage probability of multiuser cognitive MIMO system by WU Ying-xiao1, ZHU Qi2

“…To analyze the multi-antenna gain in multiuser cognitive radio system, a multiuser cognitive MIMO framework was presented. …”
Get full text

Spatio-frequency domain opportunistic access in CR-MIMO system based on primary transmission mode information by Zhao LI, Jian-dong LI, Li-yuan XIAO

Get full text

Mechanical/Electrical Hybrid Two-Dimensional Beam Scanning Cylindrical Dielectric Lens Antenna Fed by a Phased Array Primary Radiator by Yoshiki Sugimoto, Kunio Sakakibara, Tuan Hung Nguyen, Takanori Narita, Nobuyoshi Kikuma

Get full text

Research and evaluation of sparse array for massive MIMO by Mengting LOU, Jing JIN, Hanning WANG, Qixing WANG, Jiangzhou WANG

“…Massive multiple-input multiple-output (mMIMO) enables higher spectrum efficiency by deploying a large number of antenna elements.However, mMIMO will bring a substantial increase in the number of radio frequency (RF) channel, which will result in a sharp increase in cost.Therefore, it is necessary to design mMIMO with comprehensive consideration of the trade-off between the performance and the cost.Sparse array technology can approach the performance of the uniform array with less number of antenna elements by optimizing the position distribution and excitation amplitudes of the antenna elements, thereby reducing the number of RF channels and controlling the cost, and achieving a better cost-effective balance.Both link-level and system-level evaluations and analysis of sparse array based mMIMO that targets for 6G were performed under realistic simulation settings.The results show that with little performance loss, the sparse array based mMIMO can significantly reduce the number of antenna elements and the cost of base station infrastructure.…”
Get full text

A High-Precision Dynamic Six Degree-of-Freedom Pose Measurement of the Subreflectors of Large Antennas Based on a Position Sensitive Detector and Laser Array by Shangmin Lin, Wei Wang, Hu Wang, Yang Song, Yue Pan, Jiang Qiao, Yaoke Xue, Qinfang Chen, Meiying Liu, Yang Shen, Jie Liu, Yang Liu, Yongjie Xie, Canglong Zhou

“…Subreflector misalignment of a large steerable radio telescope induces a pointing error and reduces the gain of the antenna system. …”
Get full text

UHF RFID anti-collision algorithm based on blind separation and dynamic bit-slot grouping by Hua LI, Zhi-ping JIA, Hong-jun WANG, Ju LIU

“…A novel ultra high frequency(UHF)radio frequency identification（RFID）anti-collision algorithm based on independent components analysis(ICA)and dynamic bit-slot grouping technology was proposed.The ICA algorithm was used for identifying several tags simultaneously.The dynamic bit-slot tags grouping technology was used for ensuring the number of tags read by a reader at the same time was less than or equal to its antennas’number,and enabling the ICA wouldn’t work in an underdetermined state.Theoretical analysis and simulated experimental results show that the tags identification rate of the proposed algorithm is far more than that of traditional stochastic or deterministic TDMA RFID anti-collision algorithms.…”
Get full text