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Now showing items 81-90 of 101
A Novel Fractal Arrow-Shaped mmWave Flexible Antenna for IoT and 5G Communication Systems
(Electromagnetics Academy, 2022)
In this paper, a novel flexible antenna for the new ISM band is proposed. A multi-objective optimization based on DDEA-SE is performed to optimize the antenna bandwidth and gain. The proposed optimized antenna has a 4 dB ...
An innovative fractal monopole MIMO antenna for modern 5G applications
(Elsevier GmbH, 2023)
Proposed in this paper is the design of an innovative and compact antenna array which based on four radiating elements for multi-input multi-output (MIMO) antenna applications used in 5G communication systems. The radiating ...
High performance antenna-on-chip inspired by SIW and metasurface technologies for THz band operation
(Nature Research, 2023)
In this paper, a high-performance antenna-on-chip (AoC) is implemented on gallium arsenide (GaAs) wafer based on the substrate integrated waveguide (SIW) and metasurface (MTS) technologies for terahertz band applications. ...
Experimental Evaluation of Trilateration-Based Outdoor Localization with LoRaWAN
(Tech Science Press, 2023)
Long Range Wide Area Network (LoRaWAN) in the Internet of Things (IoT) domain has been the subject of interest for researchers. There is an increasing demand to localize these IoT devices using LoRaWAN due to the quickly ...
Fabrication of a large scale metasurface with high resolution and enhanced absorption
(Optica Publishing Group (formerly OSA), 2023)
Plasmonic metasurface nanostructures have the potential to enable nonlinear optical functionality in metasurfaces by reducing power operating thresholds and enabling ultra-thin subwavelength devices. However, low absorption ...
A Compact Filtering Coupler with Unwanted Harmonic Rejection Using LC Composite Lines for Communication Systems Applications
(MDPI, 2023)
In this paper, new LC lumped components and composite lines are used to create a filtering branch line coupler (FBLC) with a small size and wide suppression band. New composite lines are proposed using applied LC lumped ...
A Cross-Layer Solution for Contention Control to Enhance TCP Performance in Wireless Ad-hoc Networks
(Institute of Electrical and Electronics Engineers Inc., 2023)
With the development of wireless technology, users not only have wireless access to the Internet, but this has also sparked the emergence of Wireless Ad-hoc Networks (WANETs); this promising networking paradigm has the ...
Energy-Efficient Bi-Objective Optimization Based on the Moth–Flame Algorithm for Cluster Head Selection in a Wireless Sensor Network
(MDPI, 2023)
Designing an efficient wireless sensor network (WSN) system is considered a challenging problem due to the limited energy supply per sensor node. In this paper, the performance of several bi-objective optimization algorithms ...
Jamming Resilient Multi-Channel Transmission for Cognitive Radio IoT-based Medical Networks
(Korean Institute of Communication Sciences, 2022)
The era of the Internet-of-things (IoT) comes with tremendous burdens on pre-existing network infrastructures and protocols due to spectrum scarcity and reliability concerns. Cognitive radio (CR) technology is proposed for ...
On-Chip Terahertz antenna array based on amalgamation of metasurface-inspired and artificial magnetic conductor technologies for next generation of wireless electronic devices
(Elsevier GmbH, 2023)
The paper presents a feasibility study on an innovative terahertz (THz) on-chip antenna array designed to reliably meet the high-performance connectivity requirements for next generation of wireless devices to enable ...