Results 51 to 60 of about 2,282,353 (338)

A Meta-Surface Antenna Array Decoupling (MAAD) Method for Mutual Coupling Reduction in a MIMO Antenna System

Scientific Reports, 2018
In this paper, a method to reduce the inevitable mutual coupling between antennas in an extremely closely spaced two-element MIMO antenna array is proposed.
Ziyang Wang, Luyu Zhao, Yuan-Ming Cai, Shu-Feng Zheng, Ying-Zeng Yin   +4 more
semanticscholar   +1 more source

Preferential Interfacial Engineering of Hydrogels via Interdigitated Nanoparticle Assembly

Advanced Functional Materials, EarlyView.
Robust surface functionalization of hydrogel surfaces is performed via interdigitated metal nanoparticle assembly, inducing strong affinity with the hydrogel matrix. The partially exposed nanoparticle domains act as interfacial nanobridges that mediate both chemical and physical bonding with diverse materials, including small molecules, fluorous ...
Hyeonjin Kim, Hyeseoung Lim, Ji Min Lee, Heeyeon Kang, Yongkwon Song, Woojae Chang, So‐Jin Park, Jin Yoo, Atsushi Hozumi, Jinhan Cho, Jongkuk Ko, Sanghyuk Wooh   +11 more
wiley   +1 more source

An experimental evaluation of three candidate MIMO array designs for PDA devices [PDF]

, 2004
It is well known that multiple-input, multiple-output (MIMO) wireless channels, in which multi-element antenna arrays are used at both ends of the link, can in principle offer spectral efficiencies an order of magnitude or more above those available ...
Williams, C, Rogers, PR, Capstick, M, Kemp, B, Rogers, P, Hunukumbure, RMM, Hunukumbure, MR, Beach, MA, Hilton, GS   +8 more
core  

Small Aperture Antenna Arrays for Direction of Arrival Estimation

Sensors
In this paper, we establish criteria for the design of small aperture antenna arrays for Direction of Arrival (DOA) estimation. We define a small aperture antenna array as one consisting of a few elements with an average interelement spacing less than or
Krutant J. Mehta, Inder J. Gupta
doaj   +1 more source

Microscale Patterning of Ultrahigh‐Viscosity Metallic‐Polymer Composites via Embedded Droplet Writing

Advanced Functional Materials, EarlyView.
A hybrid additive manufacturing platform integrates direct droplet writing of metallic composite with VAT photopolymerization to fabricate architected soft magnetic composites. This approach enables microscale patterning of high‐viscosity materials for programmable actuators, adaptive fluidic devices, and switchable adhesives, offering tunable ...
Yeowon Yoon, Jian Ni, Sungmo Park, Yang Xu, Yong Chen   +4 more
wiley   +1 more source

Directive and Steerable Radiation Pattern using SASPA Array

Journal of Engineering, 2023
This work examines the ability of a special type of smart antenna array known as Switched Active Switched Parasitic Antenna (SASPA) to produce a directive and electronically steerable radiation pattern.
Rabah Abduljabbar Jasem
doaj   +1 more source

Mutual Coupling Reduction of a Circularly Polarized Four-Element Antenna Array Using Metamaterial Absorber for Unmanned Vehicles

IEEE Access, 2019
A double-layer metamaterial absorber is proposed to suppress the mutual coupling within a circularly polarized (CP) four-element antenna array operating at the Chinese Beidou navigation satellite system (BDS) B3 band, wherein four miniaturized patch ...
Jun Zhang, Jian-Xing Li, Juan Chen
semanticscholar   +1 more source

Directivity Enhancement of Movable Antenna Arrays With Mutual Coupling

IEEE Wireless Communications Letters
In conventional antenna arrays, mutual coupling between antenna elements is often regarded as detrimental. However, under specific conditions, it can be harnessed to enhance the far-field directivity (i.e., beamforming gain). Theoretically, the directivity of an N-antenna superdirective array over the endfire direction can reach N^{2}, significantly ...
Wei Xu 0051, Lipeng Zhu 0001, Wenyan Ma, An Liu 0001, Rui Zhang 0006   +4 more
openaire   +4 more sources

Out‐of‐Plane Strain‐Decoupled Architecture for High‐Fill‐Factor Stretchable OLED Displays

Advanced Functional Materials, EarlyView.
A vertically decoupled multilayer SOLED architecture separates emissive pixel islands from deformable interconnects, allowing low‐modulus elastomeric layers to accommodate applied strain and suppress strain transfer to the OLED region. This design, combined with transparent hybrid encapsulation, enables a high fill factor (∼75%), stretchability ...
Young Hyun Son, Kyung Cheol Choi, Jeong Hyun Kwon   +2 more
wiley   +1 more source

Characterizations of Mutual Coupling Effects on Switch-Based Phased Array Antennas for 5G Millimeter-Wave Mobile Communications

IEEE Access, 2019
The fifth generation (5G) millimeter-wave (mmWave) handset demands a cost-effective mmWave array antenna with beam steering capability to overcome the high-pass loss and to ensure seamless connectivity. Unlike sub-6-GHz handsets, emerging mmWave handsets
Xiaoming Chen, Muhammad Abdullah, Qinlong Li, Jianxing Li, Anxue Zhang, Tommy Svensson   +5 more
doaj   +1 more source