Results 201 to 210 of about 32,801 (229)

A Compact Multibeam Folded Transmitarray Antenna at Ku-Band

IEEE Antennas and Wireless Propagation Letters, 2021
Multibeam antennas have found more and more applications in current and future communication systems. In this letter, a low-profile multibeam fully planar folded transmitarray antenna (FTA) based on the bifocal principle is proposed.
Guo-Wei Li, Y. Ge, Z. Chen
semanticscholar   +1 more source

Indoor Positioning With Multibeam CSI From a Single 5G Base Station

IEEE Sensors Letters
Fifth-generation (5G) networks have been deployed to serve a massive number of users. The new properties of 5G, such as large bandwidth, high data rates, and extensive coverage, provide promising possibilities for positioning and navigation.
Xin Zhou, Liang Chen, Yan-Lin Ruan
semanticscholar   +1 more source

A Double-Fold 7×8 Butler Matrix-Fed Multibeam Antenna With a Boresight Beam for 5G Applications

IEEE Antennas and Wireless Propagation Letters, 2022
A substrate integrated waveguide multibeam antenna fed by a double-fold 7×8 Butler matrix (BM) beam-forming network (BFN) is presented. The proposed antenna is composed of a 7×8 BM feeding network and an 8×8 slot array.
Ming-Hsi Wu, Bing Zhang, Yanping Zhou, Kama Huang   +3 more
semanticscholar   +1 more source

2-D Orthogonal Multibeam Antenna Arrays for 5G Millimeter-Wave Applications

IEEE transactions on microwave theory and techniques, 2022
In this article, a 2-D $16 \times 16$ Butler matrix-based passive multibeam antenna array (MBAA) and a 2-D active–passive hybrid MBAA (APHMBAA) are both presented for fifth-generation (5G) millimeter-wave (mmWave) applications, which demonstrate that a 2-
Wei-Bing Kong, Yun Hu, Jia-Wang Li, Lei Zhang, Wei Hong   +4 more
semanticscholar   +1 more source

Compact Broadband Substrate-Integrated Coaxial Line 2-D Beamforming Network and Its Multibeam Array Antenna Applications

IEEE transactions on microwave theory and techniques
This article presents a compact broadband 16-way two-dimensional (2-D) Butler matrix (BM)-based beamforming network (BFN) using multilayer substrate-integrated coaxial line (SICL).
W. Li, Jun Xu, Renrong Zhao, W. Hong
semanticscholar   +1 more source

2-D Multibeam Leaky-Wave Antenna Based on Modified Luneburg Lens

IEEE Antennas and Wireless Propagation Letters
In this letter, a multibeam leaky-wave antenna (LWA) based on a modified Luneburg lens (LL) beamforming network is proposed. The antenna performs a simple structure and low profile with 2-D beam scanning.
Siyuan Lei, Gao Wei, Kangkang Han, Tiancheng Qiu, Min Wang   +4 more
semanticscholar   +1 more source

Stepped Waveform Time-Modulated Multibeam Array With Beam Suppression Functionality

IEEE Antennas and Wireless Propagation Letters
Time-modulated array (TMA) naturally generates a large number of sidebands to achieve multibeam radiation. Conventional multibeam TMAs using rectangular modulation signals lack design flexibility, and recent high-flexibility designs are mostly ...
Qiaoyu Chen, Jin-Dong Zhang, Mingxuan Cai, Deng-Yue Luo, Wen Wu, Da-Gang Fang   +5 more
semanticscholar   +1 more source

Differentially Fed Dual-Polarized 2-D Multibeam Dielectric Resonator Antenna Array Based on Printed Ridge Gap Waveguide

IEEE Transactions on Antennas and Propagation, 2022
In this article, a differentially fed dual-polarized dielectric resonator antenna (DRA) subarray excited by a substrate integrated waveguide (SIW) cavity is proposed.
Chao Chen, Ji-Xin Chen, W. Hong
semanticscholar   +1 more source

Single-Feed Multibeam Conformal Transmitarrays With Phase and Amplitude Modulations

IEEE Antennas and Wireless Propagation Letters, 2022
Single-feed multibeam conformal transmitarrays using a superposition method are presented in this letter. The arrays consist of ultrathin Huygens elements with independent amplitude and phase manipulations. Three cylindrical conformal transmitarrays with
Li-Zhao Song, Xuan Wang, P. Qin
semanticscholar   +1 more source

A Triple-Band High-Gain Multibeam Ambient RF Energy Harvesting System Utilizing Hybrid Combining

IEEE transactions on industrial electronics (1982. Print), 2020
Overcoming the challenge of battery recharging and replacement in industry Internet-of-Things (IoT) applications is considered by proposing the design of a triple-band high-gain multibeam ambient radio frequency (RF) energy harvesting system utilizing ...
Shan-Pu Shen, Yu-Jie Zhang, Chi-Yuk Chiu, R. Murch   +3 more
semanticscholar   +1 more source