A5019847057- Advanced Antenna and Metasurface Technologies
- Electromagnetic wave absorption materials
- Electromagnetic Compatibility and Measurements
- Electromagnetic Compatibility and Noise Suppression
- Electromagnetic Scattering and Analysis
- Structural Behavior of Reinforced Concrete
- Antenna Design and Analysis
- Advanced ceramic materials synthesis
- Microwave Engineering and Waveguides
- Electromagnetic Fields and Biological Effects
- Dielectric materials and actuators
- Material Properties and Applications
- Advanced Energy Technologies and Civil Engineering Innovations
- Microwave and Dielectric Measurement Techniques
- Conducting polymers and applications
Polytechnic School of Algiers
2018-2025
This paper develops a single-layer equivalent model for multilayered shielding materials using measurements of complex permittivity and permeability. Through rectangular waveguide Transmission/Reflection measurements, electromagnetic parameters effectiveness (SE) are evaluated. The aim is to establish an structure matching the SE original structure. Initial validation involves testing on simulated experimental data reference material. methodology then applied novel three-layer...
ABSTRACT The characteristics of multilayered microwave absorbing materials are very efficient compared with those single layer. In this article, a hybrid optimization algorithm (genetic + pattern search) combined transmission line matrix method has been presented. selection parameters, including the arrangement layers, thickness absorption index, and shielding efficiency, forms foundation process. was applied to two new structures. first structure consists conductive layers (CLs) carbon...
The conventional electromagnetic interference (EMI) shielding materials are being gradually replaced by a new generation of supported conducting polymer composites (CPC) films due to their many advantages. This work presents contribution on the effects silane surface–modified flexible polypyrrole-silver nanocomposite effectiveness (EMI-SE). Thus, UV-polymerization was used in-situ deposit PPy-Ag biaxial oriented polyethylene terephthalate (BOPET) substrates whose surfaces were treated...
The development of novel nanomaterials with superior reflection loss (RL), thin thickness, wide bandwidth, and low density has recently received significant attention in an effort to increase their effectiveness electromagnetic (EM) microwave absorption while maintaining easy manufacturing process. Naturally, using conventional materials magnetic or dielectric makes it difficult achieve the last criterion limitations thickness absorber mass production. In this work, nanocomposites samples...
In this paper, a study of electromagnetic shielding effectiveness Polyaniline-Silver (PANI-Ag) nanocomposite films using coaxial open-ended waveguide is presented. Ansys HFSS software used to model the and thus evaluate S-parameters calculate different polyaniline samples. The composite material synthesized within laboratory facile UV induced polymerization aniline in presence AgNO3. simulation results are confirm experimental measurements on sample with frequency band from 8 GHz 18 GHz....
Abstract Conductive flexible polypyrrole-silver (PPy-Ag) composite films were prepared on Biaxial Oriented Polyethylene Terephthalate (BOPET) substrate with surfaces treated by (3-aminopropyl) trimethoxysilane (APTMS). The surface treatment was carried out to improve the adhesion, morphology, and electrical properties of deposited film enhance Electromagnetic Interference Shielding Effectiveness (EMI-SE). APTMS grafting BOPET confirmed X-ray Photoelectron Spectroscopy (XPS) Atomic Force...
This work aims to validate a characterisation method using Poly-Tetra-Fluore-Ethylen. The has been verified by three models: analytical model, numerical simulation and an experimental measurement. model is based on Nicolson-Ross-Weir (NRW) method. performed (Ansys HFSS) meaning rectangular waveguide. measurement done vector network analyzer (VNA) associated X-band waveguide system where the test samples were introduced filling cross-section of result accuracy are enhanced removing phase...