Results 31 to 40 of about 916,407 (328)

Antenna Activation for NOMA Assisted Pinching-Antenna Systems [PDF]

IEEE Wireless Communications Letters
In this letter, a nonorthogonal multiple access (NOMA) assisted downlink pinching-antenna system is investigated, where multiple pinching antennas can be activated at preconfigured positions along a dielectric waveguide to serve users via NOMA.
Kaidi Wang, Zhi-Guo Ding, Robert Schober
semanticscholar   +1 more source

Novel small-size directional antenna for UWB WBAN/WPAN applications [PDF]

, 2005
This paper presents a novel small-size directional antenna design for ultrawide-band wireless body area networks/wireless personal area networks applications.
G. Troster, Klemm, M, Pedersen, Gert F, Kovcs, I Z, M. Klemm, Troster, G, Troster, Gerhard, Pedersen, Gert Frølund; id_orcid, G.F. Pedersen, Kovacs, Istvan Z, I.Z. Kovcs   +10 more
core   +2 more sources

Joint Optimal Power Allocation and Relay Selection Scheme in Energy Harvesting Two-Way Relaying Network

Future Internet, 2019
In this paper, we propose a joint power allocation, time switching (TS) factor and relay selection scheme for an energy harvesting two-way relaying communication network (TWRN), where two transceivers exchange information with the help of a wireless ...
Xin Song, Siyang Xu, Zhigang Xie, Xiuwei Han   +3 more
doaj   +1 more source

Broadband Antennas and Antenna Arrays [PDF]

International Journal of Antennas and Propagation, 2014
Abstract is not available in fulltext.
Dou, Wenbin, Shen, Zhongxiang, Li, Xiuping, Xiao, Shaoqiu   +3 more
openaire   +2 more sources

Movable-Antenna Position Optimization: A Graph-Based Approach [PDF]

IEEE Wireless Communications Letters
Fluid antennas (FAs) and movable antennas (MAs) have emerged as promising technologies in wireless communications, which offer the flexibility to improve channel conditions by adjusting transmit/receive antenna positions within a spatial region.
Weidong Mei, Xin Wei, Boyu Ning, Zhi Chen, Rui Zhang   +4 more
semanticscholar   +1 more source

Design of a polarization selective surface for co‐channel interference suppression

Electronics Letters, 2022
In this paper, a novel design of polarization selective surface (PSS) is proposed for co‐channel interference (CCI) suppression. By establishing a switchable doublet topology, two types of second‐order filtering responses with two transmission zeros are ...
Xian Wang, Yue Wang, Qikun Liu, Dongfang Zhou, Dalong Lv   +4 more
doaj   +1 more source

Effect of wall thickness on broadband design of a Ka-band TE21-mode coupler

Journal of Electronic Science and Technology, 2021
Commonly, the classical formulas for designing TE21-mode coupler are suitable for the operating frequency under Ka-band by virtue of ignoring wall thickness.
Wei Zheng, Chao Wang, Wen-Li Yang, Chun-Bang Wu   +3 more
doaj   +1 more source

Balanced‐to‐unbalanced and balanced‐to‐balanced filtering rat‐race couplers using multilayer substate integrated waveguide cavities

IET Microwaves, Antennas & Propagation, 2021
This study reports a class of balanced‐to‐unbalanced (BTU) and balanced‐to‐balanced (BTB) filtering rat‐race couplers (FRCs) based on multilayer substrate integrated waveguide (SIW) cavities.
Xian Wang, Dongfang Zhou, Dewei Zhang, Yue Wang, Dalong Lv, Yi Zhang   +5 more
doaj   +1 more source

Antenna Designs for CubeSats: A Review

IEEE Access, 2021
Cube Satellites, aka CubeSats, are a class of nano satellites that have gained popularity recently, especially for those that consider CubeSats as an emerging alternative to conventional satellites for space programs.
Suhila Abulgasem, Faisel E. M. Tubbal, R. Raad, P. Theoharis, Sining Lu, Saeid Iranmanesh   +5 more
semanticscholar   +1 more source

Performance Limits of Fluid Antenna Systems [PDF]

IEEE Communications Letters, 2020
Fluid antenna represents a concept where a position-flexible antenna can switch its location freely within a given space. Recently, it has been demonstrated that even with a tiny space, a single-antenna fluid antenna system (FAS) can outperform an $L ...
Kai-Kit Wong, Arman Shojaeifard, K. Tong, Yangyang Zhang   +3 more
semanticscholar   +1 more source