Results 61 to 70 of about 3,037 (262)

Traditional Techniques and Modern Microwave Antenna Designs for Breast Cancer Detection: A Comprehensive Review

International Journal of Antennas and Propagation, Volume 2026, Issue 1, 2026.
Microwave breast imaging has become a significant area of research due to the high incidence of breast cancer in women and the limitations of conventional detection methods. In recent years, this field has gained momentum as it offers improved detection rates and several advantages like it is nonionizing and safe, cost‐effective, portable and flexible,
Chinmoy Das, Mostafa Zaman Chowdhury, Liton Chandra Paul   +2 more
wiley   +1 more source

Simple Compact UWB Vivaldi Antenna Arrays for Breast Cancer Detection

Telecom
In this study, at ultra-wideband (UWB) frequency band (3.1–10.6 GHz), we propose the use of compact 2:1 and 3:1 nonuniform transmission line Wilkinson power dividers (NTL WPDs) as feeding networks for simple 2 × 1 linear UWB Vivaldi tapered and ...
Sahar Saleh, Tale Saeidi, Nick Timmons
semanticscholar   +1 more source

A New Antenna Capable of Generating Broadband Plane Spiral Orbital Angular Momentum

IEEE Access
The plane spiral orbital angular momentum (PS-OAM), which is a special form of orbital angular momentum (OAM) beams, solves the problem of OAM beam divergence to some extent.
Na Li, Guirong Feng, Ping Li, Xiaowei Shi   +3 more
doaj   +1 more source

A Comprehensive Review of Battery‐Free Energy Efficient RF and Microwave Systems

Journal of Engineering, Volume 2026, Issue 1, 2026.
Battery‐free radiofrequency (RF) and microwave systems have emerged as a promising solution for enabling long‐lifetime, maintenance‐free wireless sensing and communication platforms by eliminating conventional battery dependence. These systems operate by harvesting ambient or dedicated electromagnetic energy, converting it to usable electrical power ...
Stella N. Arinze, Augustine O. Nwajana, Vijayanandh Raja   +2 more
wiley   +1 more source

Generation of OAM Radio Waves Using Circular Vivaldi Antenna Array

International Journal of Antennas and Propagation, 2013
This paper gives a feasible and simple solution of generating OAM-carrying radio beams. Eight Vivaldi antenna elements connect sequentially and fold into a hollow cylinder.
Changjiang Deng, Wenhua Chen, Zhijun Zhang, Yue Li, Zhenghe Feng   +4 more
doaj   +1 more source

Single ACPW‐Fed Dual‐/Tri‐Band Dual Circularly Polarized Microstrip Antenna for Improvised Explosive Device Detection

Journal of Electrical and Computer Engineering, Volume 2026, Issue 1, 2026.
A compact single asymmetric coplanar waveguide feed (ACPW‐fed) dual circularly polarized microstrip antenna that operates at 1.8, 3.9, and 5.2 GHz in the entire operating frequency band 600 MHz–6 GHz for the radar detection of the improvised explosive devices (IEDs) carried by a person is introduced.
Jaures Anou Koudjou, Ghanshyam Singh, Clement Mbinack, Jacques Atangana, Arpan Hazra   +4 more
wiley   +1 more source

A Modified Compact Flexible Vivaldi Antenna Array Design for Microwave Breast Cancer Detection

Applied Sciences, 2022
In this paper, a compact, flexible Vivaldi antenna is designed, and an array of nine identical antennas of this type is used as a microwave breast imaging model to detect cancerous tumors in the multilayers phantom model presented in this paper. The nine-
Ayman M. Qashlan, R. Aldhaheri, Khalid H. Alharbi   +2 more
semanticscholar   +1 more source

Partial Discharge Detection Method of Fibre‐Composed HVDC Submarine Cable Based on φ‐OTDR and Hilbert Demodulation

High Voltage, Volume 10, Issue 6, Page 1380-1389, December 2025.
ABSTRACT Partial discharge (PD) is the indicator of the insulation defect in cables. However, the pulse current method, which is widely adopted in land cables, cannot obtain PD signals of high‐voltage direct current (HVDC) submarine cables due to attenuation and installation position.
Hang Wang, Haoran Zhang, Lei Li, Shuai Yang, Jun Chen, Bangdou Huang, Cheng Zhang, Tao Shao   +7 more
wiley   +1 more source

A new non-planar Vivaldi antenna

, 2005
International audienceA new non-planar Vivaldi antenna is presented as a three-dimensional structure in the shape of a fleur-de-lis. This new balanced antenna is unique in its extremely flat S/sub 11/ response, minimizing phase distortion over a wide ...
Yedlin, M., Kotto, K., Ratajczak, Ph., Pichot, Christian, Brachat, P., Dauvignac, Jean-Yves   +5 more
core   +1 more source

Cloaking and Antennas: From Theoretical Paradigms to Next‐Generation Intelligent Systems

Advanced Optical Materials, Volume 13, Issue 33, November 25, 2025.
The inception of electromagnetic cloaking sparked an immediate question: Can antennas be made invisible? Two decades later, this review charts the intertwined progress of major cloaking strategies (from transformation optics to scattering cancellation), metasurface technology, and their application to antennas, revealing how AI‐enabled devices are ...
Helen Guo, Xun Li
wiley   +1 more source