An ultra-wideband vivaldi antenna system for long-distance electromagnetic detection

J Ren, H Fan, Q Tang, Z Yu, Y Xiao, X Zhou - Applied Sciences, 2022 - mdpi.com
Enlarging or reducing the antenna beam width of antennas can improve the positioning
capability of detection systems. A miniaturized and easily fabricated ultra-wideband (UWB) …

Ultra-Wide Band Double-Slot Podal and Antipodal Vivaldi Antennas Feed by Compact Out-Of-Phase Power Divider Slot for Fluid Properties Determination

J Ghimire, DY Choi - Sensors, 2022 - mdpi.com
In this paper, double slot podal and antipodal ultra-wideband (UWB) microstrip antennas for
a fluid property measurement system are proposed. Among different feeding techniques, out …

Generalized Concept and MATLAB Code for Modeling and Analyzing Wideband 90° Stub-Loaded Phase Shifters with Simulation and Experimental Verifications

FM Alnahwi, YIA Al-Yasir, CH See, AS Abdullah… - Sensors, 2023 - mdpi.com
In the design of phase shifters, the modeling equations are too complicated and require
some approximations to be derived correctly by hand. In response to this problem, this paper …

RCTrans-Net: A spatiotemporal model for fast-time human detection behind walls using ultrawideband radar

C Avian, JS Leu, H Song, J Takada, NAS Putro… - Computers and …, 2024 - Elsevier
Ultrawideband (UWB) radar systems are becoming increasingly popular for detecting
human presence, even through walls. Recent advancements in signal processing use deep …

Design of Wideband High-Gain Patch Antenna Array for High-Temperature Applications

R Li, P Li, P Rocca, AÁ Salas Sánchez, L Song, X Li… - Sensors, 2023 - mdpi.com
A low-profile, wideband, and high-gain antenna array, based on a novel double-H-shaped
slot microstrip patch radiating element and robust against high temperature variations, is …

Cost-Efficient Two-Level Modeling of Microwave Passives Using Feature-Based Surrogates and Domain Confinement

A Pietrenko-Dabrowska, S Koziel, QJ Zhang - Electronics, 2023 - mdpi.com
A variety of surrogate modeling techniques has been utilized in high-frequency design over
the last two decades. Yet, the curse of dimensionality still poses a serious challenge in …

Simple Compact UWB Vivaldi Antenna Arrays for Breast Cancer Detection

S Saleh, T Saeidi, N Timmons - Telecom, 2024 - mdpi.com
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) …

[HTML][HTML] A Compact Wideband Vivaldi Antenna for Non-Invasive Glucose Monitoring

S Yang, Y Wang, S Gao, Y Zhuang, L Wang… - …, 2024 - pmc.ncbi.nlm.nih.gov
Due to the high gain, wide bandwidth, and directional radiation characteristics of Vivaldi
antennas, this paper conducted relevant research on the feasibility of non-destructive blood …

An optimal linear and elliptical antenna array design using black widow optimisation for 5G communication

R Saha, A Das, D Mandal, R Kar - International Journal of …, 2023 - Wiley Online Library
This research illustrates a precise linear and elliptical antenna array design for synthesising
the optimal far‐field radiation pattern in the fifth‐generation (5G) communication spectrum …

Design of a novel wideband leaf-shaped printed dipole array antenna using a parasitic loop for high-power jamming applications

E Kang, TH Lim, S Park, H Choo - Sensors, 2021 - mdpi.com
This paper proposes a novel wideband leaf-shaped printed dipole antenna sensor that uses
a parasitic element to improve the impedance matching bandwidth characteristics for high …