Results 81 to 90 of about 583,687 (273)

Engineering Cathode–Electrolyte Interphase for High‐Performance Li–S Batteries

Carbon Neutralization, Volume 5, Issue 1, January 2026.
This review focuses on electrode surface modification strategies to fundamentally enhance battery cyclability and charge–discharge kinetics, addressing critical limitations in contemporary energy storage systems. ABSTRACT Lithium–sulfur (Li–S) batteries exhibit notable advantages, such as lower cost, due to the abundance and affordability of sulfur ...
Anni Ai, Wei Wei, Kaijie Miao, Jiangqi Zhou   +3 more
wiley   +1 more source

Broadband HMSIW antenna using a demi hexagonal ring slot for X-band application

Jurnal Ilmiah SINERGI
Microstrip antennas offer several advantages, including small size, easy fabrication, controllable polarity and radiation patterns, and easy integration with other components.
Dian Widi Astuti, Muslim Muslim, Umaisaroh Umaisaroh, Huda A Majid, Syah Alam   +4 more
doaj   +1 more source

Comparative Study of Antenna Designs for RF Energy Harvesting

International Journal of Antennas and Propagation, 2013
In the last few years, several antenna designs of rectenna that meet various objectives have been proposed for use in RF energy harvesting. Among various antennas, microstrip patch antennas are widely used because of their low profile, light weight, and ...
Sika Shrestha, Sun-Kuk Noh, Dong-You Choi   +2 more
doaj   +1 more source

Investigation of the Resonance Phenomenon in a Microstrip to Grounded Coplanar Waveguide Structure

International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, Volume 39, Issue 1, January/February 2026.
ABSTRACT In this paper, we investigate the resonance phenomenon in a microstrip (MS) to grounded coplanar waveguide (GCPW) to MS structure. We demonstrate that the resonance arises from the relative phase difference between two excited modes in the GCPW.
Navid Elahi, Jian‐Ming Jin
wiley   +1 more source

Penghasilan panduan keselamatan industri bagi kegunaan bakal graduan Kejuruteraan Elektrik Politeknik [PDF]

, 2003
Panduan keselamatan industri merupakan satu bentuk bimbingan yang penting kepada pelajar supaya mereka dapat mengetahui dengan jelas tentang amalan dan pengurusan keselamatan keija.
Wan Mahmud, Wan Mahzhir
core  

A Microstrip Monopole Antenna Design for 5G Sub‐6 GHz Applications Using Deep Learning

IET Communications, Volume 20, Issue 1, January/December 2026.
This study presents the design and optimization of a SIW antenna for 5G sub‐6 GHz applications, employing a deep learning‐based surrogate model combined with Honeybee Mating Optimization (HBMO). To generate training and test datasets efficiently, LHS was used.
Berker Çolak, Mehmet Ali Belen, Farzad Kiani, Ozlem Tari, Peyman Mahouti, Oguzhan Akgol   +5 more
wiley   +1 more source

Wideband Circularly Polarised Metasurface Microstrip Patch Antenna Using Characteristic Mode Analysis

IET Microwaves, Antennas & Propagation
A double‐layer wideband circularly polarised (CP) metasurface (MTS) antenna is proposed. The MTS consists of a 4 × 4 L‐shaped patch array. The modal behaviours of the proposed MTS are investigated using the characteristic mode theory.
Jiangwei Li, Ye Zhao, Haiqing Guo, Rui Gao, Zhihui He, Zhimin Yang   +5 more
doaj   +1 more source

Technologies for Near-Field Focused Microwave Antennas

International Journal of Antennas and Propagation, 2017
This paper provides a review spanning different technologies used to implement near-field focused antennas at the microwave frequency band up to a few tens of GHz: arrays of microstrip patches and printed dipoles, arrays of dielectric resonator antennas,
Paolo Nepa, Alice Buffi, Andrea Michel, Giuliano Manara   +3 more
doaj   +1 more source

Polarization Enhancement of Microstrip Antennas by Asymmetric and Symmetric Grid Defected Ground Structures

IEEE Open Journal of Antennas and Propagation, 2020
A new approach to controlling cross-polarization (XP), for either suppressing XP or exciting circular polarization (CP), in single-fed microstrip antennas using novel grid defected ground structures (GDGSs) is proposed.
Yujie Zhang, Zixiang Han, Shanpu Shen, Chi-Yuk Chiu, Ross Murch   +4 more
doaj   +1 more source

A New Technique Using Axially Slotted Microstrip Line for Antenna Impedance Matching Designs

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
A new technique is presented for designing microstrip patch antennas with very good input impedance matching. The analysis is carried out for 1.78 GHz, 2.42 GHz and 3.46 GHz rectangular patch antennas printed on low-cost fiberglass substrates (FR-4 ...
André N. da Silva, Rafaela G. G. de Carvalho, Adaildo G. D’Assunção Junior, Adaildo G. D’Assunção   +3 more
doaj   +1 more source