Results 61 to 70 of about 311,742 (212)
Design of a Wideband Antipodal Vivaldi Antenna with an Asymmetric Parasitic Patch [PDF]
Journal of the Korean Institute of Electromagnetic Engineering and Science, 2018 An antipodal Vivaldi antenna with a compact parasitic patch to overcome radiation performance degradations in the high-frequency band is proposed. For this purpose, a double asymmetric trapezoidal parasitic patch is designed and added to the aperture of ...
Jihoon Bang, Juneseok Lee, Jaehoon Choi
doaj +1 more source
Scale‐Invariant Waveguiding in Flatland
Exploration, Volume 6, Issue 1, February 2026.The study introduces scale‐invariant metasurface waveguides with uniform modal field distribution and an effective index independent of the core width. By leveraging spatial symmetry and fine‐tuning mode profiles, the design is validated through near‐field measurements in the C band, offering potential applications in flat optics, sensing, and ...
Zhixia Xu +5 more
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IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.In this paper, a Miniaturised Element Frequency Selective Surface (MEFSS) with unique resonance characteristics and significant practical implications is proposed. The structure, with a larger dimension, governs the reflection resonance at a higher frequency, whereas the minor one supports the reflection resonance at a lower frequency. The longer strip
Zhaoran Chen +3 more
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An Ultrawideband Energy Selective Antenna for High‐Intensity Radiation Fields Prevention
IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.This paper presents an ultrawideband energy‐selective antenna (ESA) based on an antipodal Vivaldi architecture that provides robust protection against high‐intensity radiated fields (HIRF). By integrating PIN diodes into the radiating structure, the ESA maintains excellent performance under normal conditions (reflection coefficient < −10 dB, gain ≈ 5 ...
Ning Hu, Fule Kang, Yanlin Xu
wiley +1 more source
A Super Wideband Directional Compact Vivaldi Antenna for Lower 5G and Satellite Applications
International Journal of Antennas and Propagation, 2021 In this paper, a super wide band (SWB) Vivaldi antenna has been proposed for lower 5G bands in Sub-6 GHz and satellite applications (S, C, X, Ku, and K band) using various performance improvement techniques.
Liton Chandra Paul, Md. Mohiminul Islam
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Gain Enhancement of Spoof Surface Plasmon Polaritons Fed Tapered Slot Antenna Arrays
IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.This article presents a novel spoof surface plasmon polariton (SSPP) feeding mechanism that overcomes traditional field‐matching limitations in tapered slot antennas. By exploiting the localized hotspots inherent to SSPPs, the proposed design significantly enhances energy transfer efficiency and aperture field uniformity.
Yiming Zhang +3 more
wiley +1 more source
International Journal of Antennas and PropagationThis article presents a planar Vivaldi array antenna based on a power divider structure. A half-loop defected ground structure (DGS) is performed to decrease the mutual coupling between antennas in the bottom layer of the substrate.
Ming-An Chung +3 more
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International Journal of Antennas and Propagation, Volume 2026, Issue 1, 2026.Half impulse radiating antenna (HIRA) is commonly used in high‐power ultrawideband (UWB) systems. These systems come under the class of Intentional Electromagnetic Interference (IEMI) systems, which are intended to generate intense electric fields (∼10 kV/m and above) in a far field range.
Sandeep Kumar Singh +6 more
wiley +1 more source
Enhanced radiation characteristics for antipodal Vivaldi antenna using high permittivity dielectric director [PDF]
Journal of Advanced Dielectrics, 2017 In this paper, we investigate the influence of higher permittivity dielectric director on the radiation performances of an antipodal Vivaldi antenna. An elliptical dielectric director with high permittivity is inserted in an antipodal Vivaldi antenna ...
Rabiaa Herzi +2 more
doaj +1 more source
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 +2 more
wiley +1 more source