Results 51 to 60 of about 3,037 (262)

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, Shuo Bao, Massimo Moccia, Giuseppe Castaldi, Tie Jun Cui, Vincenzo Galdi   +5 more
wiley   +1 more source

An Electrically Highly Compact Ultra-Wideband Vivaldi Antenna With Substantial Gain Performance

IEEE Open Journal of Antennas and Propagation
In this paper, the design, analysis, fabrication, and measurement of an electrically highly compact ultrawideband Vivaldi antenna is presented. The overall dimensions of the antenna are $0.21\lambda _{0}\times 0.15\lambda _{0}\times 0.002\lambda _{0}$ ,
Ababil Hossain, Samuel Wagner, Stephen Pancrazio, Anh-Vu Pham   +3 more
doaj   +1 more source

On the Relationship Between the Electromagnetic Burst and Inductive Sensor Measurement of a Pulsed Plasma Accelerator

IEEE Access, 2019
A remote and non-invasive diagnostic of the plasma focus using antennas is presented in this work. The main motivation is the application of such diagnostic in a miniaturized plasma accelerator, based on the plasma focus architecture, as a cube satellite
Luis Orellana, Jorge Ardila-Rey, Gonzalo Avaria, Marcos A. Diaz, Cristian Pavez, Roger Schurch, Leopoldo Soto   +6 more
doaj   +1 more source

Low-Profile Dual-Polarized Antenna Integrated with Horn and Vivaldi Antenna in Millimeter-Wave Band

Applied Sciences, 2023
In this paper, a dual-polarized antenna based on a substrate-integrated waveguide (SIW) horn antenna and Vivaldi antenna is proposed. The horizontal polarization (HP) is achieved by using the H-plane SIW horn antenna, while the vertical polarization (VP)
Xiaoyan Yu, Jianxing Li, Jianping Hu, Yuan Yao, Jianwu Li, Sen Yan   +5 more
doaj   +1 more source

A Cylindrical Conformal Miniaturised Element Frequency Selective Surface With Unusual Resonance for Electromagnetic Shielding

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, Xiangyu Li, Junjie Hu, Xiayuan Yao   +3 more
wiley   +1 more source

A Compact Low Frequency Vivaldi Antenna for Ground Penetrating Radar

, 2023
One of the most important parts in ground penetrating radar (GPR) system is the antenna. To transmit the waves to deep depths, the operating frequency should be decreased as possible.
Hussein, Ahmed M. Elshenawy, Ahmed M. Elkhawaga, Amr
core   +2 more sources

Design of Half Impulse Radiating Antenna (HIRA) With Tapered Transverse Electromagnetic (TEM) Horn–Based Novel Feeding Mechanism for Intentional Electromagnetic Interference (IEMI) Applications

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, S. Mitra, Romesh Chandra, K. Senthil, Amitava Roy, Archana Sharma, Bilal Tütüncü   +6 more
wiley   +1 more source

Miniaturized Multi-band Millimeter-Wave Vivaldi Antenna with Performance Optimization at 28 GHz for 5G MIMO Applications

Journal of Infrared, Millimeter and Terahertz Waves
A novel design for Vivaldi antenna is introduced to operate in more than one frequency band in the millimeter-wave spectrum range with high gain. The proposed Vivaldi antenna is planar and printed on both sides of Rogers 3003C flexible substrate.
Rania R. Elsharkawy, K. Hussein, A. Farahat   +2 more
semanticscholar   +1 more source

Four-port UWB MIMO Vivaldi Antenna Based on Resistor and Radiant Patch Loading

Progress In Electromagnetics Research M, 2023
|A four-port ultra-wideband (UWB) multi-input multi-output (MIMO) Vivaldi antenna loaded with resistance and rectangular radiation patch is designed and fabricated.
J. Nan, Huimei Zhang, Jv Huang
semanticscholar   +1 more source

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