Results 71 to 80 of about 1,807 (185)
An Improved Crayfish Algorithm‐Based Neural Network Method for Modeling Microstrip Patch Antennas
International Journal of Antennas and Propagation, Volume 2025, Issue 1, 2025.Artificial neural networks (ANNs) have shown remarkable advantages in antenna modeling and optimization as surrogate models. However, in single‐objective modeling, the convergence accuracy of ANN‐based antenna models is often insufficient. This paper proposes an improved crayfish optimization algorithm (ICOA) to optimize the initial weights and biases ...
Shao-Long Cao +5 more
wiley +1 more source
Singly-fed shaped planar inverted-F antenna for circular polarization [PDF]
, 2016 © 2016 IEEE. We propose a singly-fed planar inverted-F antenna (PIFA), with double-shorting planes and a tapered patch for radiating circular polarization. FEKO® simulations are employed to optimize the geometry of the antenna.
Boddupalli, A +3 more
core +1 more source
Compact Wideband Folded Dipole Antenna With a Parasitic Dipole
International Journal of Antennas and Propagation, Volume 2025, Issue 1, 2025.A wideband folded dipole antenna with stable radiation patterns and a compact size is proposed. A folded bowtie dipole and a reflector with two vertical metal plates are applied to achieve compact dimensions. By introducing a parasitic dipole orthogonal to the folded bowtie dipole and a cylindrical substrate placed on these two dipoles, the impedance ...
Ling-Lu Chen +3 more
wiley +1 more source
Физика волновых процессов и радиотехнические системы, 2018 This article is devoted to the development of correct methods of electrodynamic analysis of microstrip antennas with substrates of chiral metamaterials.
A.M. Neshcheret
doaj
Variable-fidelity optimization of microwave filters using co-kriging and trust regions [PDF]
, 2012 In this paper, a variable-fidelity optimization methodology for simulation-driven design optimization of filters is presented. We exploit electromagnetic (EM) simulations of different accuracy.
Couckuyt, Ivo +2 more
core
Combined Field Integral Equation Based Theory of Characteristic Mode [PDF]
, 2015 Conventional electric field integral equation based theory is susceptible to the spurious internal resonance problem when the characteristic modes of closed perfectly conducting objects are computed iteratively. In this paper, we present a combined field
Chew, Weng Cho +3 more
core +2 more sources
Frequency‐diverse aperture imaging using an open cavity with a rough base
IET Microwaves, Antennas &Propagation, Volume 18, Issue 12, Page 1139-1147, December 2024.Single‐shot computational microwave imaging of a target is obtained using a frequency‐diverse aperture. Radiation from a conducting rough reflector, illuminated by an ultra‐wideband antenna provides random patterns. To obtain spatially uncorrelated near‐field scans, four conducting walls are placed around the rough surface.
Ehsan Rashidi‐Ranjbar +2 more
wiley +1 more source
ELECTRICALLY SMALL DIPOLE, SPIRAL AND LOOP ANTENNAS [PDF]
Радиофизика и электроника, 2017 The results of studies in the range of microwave radio characteristics of linear wire electrically small antennas, which important properties are small size and weight, are presented.
V. V. Ovsyanikov
doaj +1 more source
GLRT‐based detection of targets composed of distributed scattering centres
IET Radar, Sonar &Navigation, Volume 18, Issue 10, Page 1767-1778, October 2024.A new method is presented to distinguish between the distributed and centralised scattering centres which is helpful in automatic target recognition. Experimental results demonstrates the effectiveness of the proposed algorithm which is superior to existing methods.
Amir Mohammad Hatami +2 more
wiley +1 more source