Results 51 to 60 of about 1,217 (218)
Ladder Arrangement Method for Stealth Design of Vivaldi Antenna Array
International Journal of Antennas and Propagation, 2013 A novel stealth design method for X-band Vivaldi antenna arrays is proposed in this paper by ladder arrangement along radiation direction. Two-element array, eight-element array, and 3 × 7-element array are investigated in this paper. S parameters, RCSs,
XiaoXiang He +3 more
doaj +1 more source
Metamaterial Vivaldi Antenna Array for Breast Cancer Detection
Sensors, 2022 The objective of this work is the design and validation of a directional Vivaldi antenna to detect tumor cells’ electromagnetic waves with a frequency of around 5 GHz.
Marwa Slimi +4 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 +2 more
wiley +1 more source
Novel small-size directional antenna for UWB WBAN/WPAN applications [PDF]
, 2005 This paper presents a novel small-size directional antenna design for ultrawide-band wireless body area networks/wireless personal area networks applications.
G. Troster +10 more
core +1 more source
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 +4 more
wiley +1 more source
Ultra‐wideband antenna system for in‐band full‐duplex applications
IET Microwaves, Antennas & Propagation, 2021 In this study, we present an ultra‐wideband full‐duplex system constituted of a wideband 4‐element Vivaldi array and wideband microstrip‐to‐slotline baluns.
Hadi Hijazi +4 more
doaj +1 more source
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 +7 more
wiley +1 more source
Study of thermal noise generated in a Vivaldi antenna using the Improved Wheeler Cap method
, 2011 We analyze sources of inefficiency in a single Vivaldi antenna. The analysis is based on simulations of antenna radiation efficiencies and measurement data obtained via the Improved Wheeler Cap (IWC) method.
Petursson, M. +16 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
, 2016 In this paper the results of the investigation into wireless power transmission in a concrete slab reinforced by metal bars (rebars) are presented. For this purpose a two-antenna setup including a resonant antipodal Vivaldi antenna as a transmitting ...
Esmati, Zahra (S32282) +2 more
core +1 more source