Results 41 to 50 of about 1,855 (196)

Additive Manufacturing of Broadband Dielectric Resonator Antennas Using Graded Permittivity and Modal Analysis

open access: yesElectronics Letters, Volume 62, Issue 1, January/December 2026.
This study enhances the bandwidth of dielectric resonator antennas (DRAs) by introducing a linearly graded permittivity profile. Characteristic Mode Analysis reveals that this approach broadens the modal distribution and extends the dominant resonant mode bandwidth.
Romain Ammar   +8 more
wiley   +1 more source

Electromagnetic Scattering of Electrically Large Ship above Sea Surface with SBR-SDFM Method

open access: yesInternational Journal of Antennas and Propagation, 2017
Hybrid scheme combining shooting and bouncing ray with semi-deterministic facet model is proposed to analyze composite scattering from ship-ocean scene in this study.
Lixin Guo, Tiantian Feng
doaj   +1 more source

GPR Antenna Modelling Based on DML Exploiting Cosine Similarity Metric

open access: yesIET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.
The proposed SNN‐KNN‐GPR framework. ABSTRACT Traditional full‐wave electromagnetic simulation software, such as HFSS or CST, requires substantial computational resources and time consumption, as does the construction of surrogate models when acquiring new samples. To overcome this data efficiency challenge, we propose a Data Augmentation (DA) modelling
Shenghao Ye, Yubo Tian, Guangshen Tan
wiley   +1 more source

Analysis of Wave Propagation Models With Radio Network Planning Using Dual Polarized MIMO Antenna for 5G Base Station Applications

open access: yesIEEE Access, 2022
Dual polarized printed multiple input multiple output (MIMO) antenna for Band 42 (3.4 - 3.6 GHz) with wave propagation models is presented. Polarization and spatial diversity are achieved by utilizing two printed bow-tie antennas in orthogonal ...
Anudeep Bellary   +2 more
doaj   +1 more source

Open‐Set Recognition of Radar One‐Dimensional Range Profiles Based on Attention Mechanism and Multi‐Task Joint Training

open access: yesIET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
To address the issues in radar automatic target recognition (RATR) based on high‐resolution range profiles (HRRP)—specifically, the inability of closed‐set methods to handle unknown categories and the limitation of conventional open‐set methods that can only reject unknown categories without further subdivision—this paper proposes the MHA–CoST open‐set
Bowen Bai   +3 more
wiley   +1 more source

Full-Wave Electromagnetic Model Simulations of P-Band Radio Signal Propagation Through Forest Using the Fast Hybrid Method

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
This article presents an analysis of P-band radio signal propagation through forest based on 3D Numerical Method of Maxwell's equations (NMM3D). The simulation domain of the forested region covers an area of 35.8 × 35.8 m2 that includes 112&
Jongwoo Jeong   +4 more
doaj   +1 more source

Reduction of Proximity Effects on UHF Passive RFID Systems by Using Tags with Polarization Diversity [PDF]

open access: yes, 2015
A new technique that enables passive ultra high fre- quency (UHF) radio frequency identification (RFID) tags to be read when they are placed in close proximity in an array is pre- sented.
Crisp, MJ   +3 more
core   +2 more sources

Numerical simulation of Single-dish antenna radiation characteristics

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The numerical simulation results of scattering characteristics of a single-dish antenna obtained by commercial Program FEKO and in the specialized program are given. The results are compared on different criteria.
M. M. Dghali
doaj  

Scattered Field Calculation From Microstrip Arrays Using the Combination of Discrete Bodies of Revolution and Domain Decomposition Methods

open access: yesIEEE Access, 2023
This paper analyzes electromagnetic scattering from a microstrip array with a homogeneous dielectric substrate in two symmetry cases. In the first case, the entire structure has discrete rotational symmetry, and the discrete bodies of revolution method ...
Hossein Mohammadzadeh   +2 more
doaj   +1 more source

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