Simple compact UWB vivaldi antenna arrays for breast cancer detection
Yükleniyor...
Tarih
2024
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
MDPI
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
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 x 1 linear UWB Vivaldi tapered and nonuniform slot antenna (VTSA and VNSA) arrays. The 2:1 and 3:1 tapered transmission line (TTL) WPDs are designed and tested in this work as benchmarks for NTL WPDs. The VTSA array provides measured S-11 < -10.28 dB at 2.42-11.52 GHz, with a maximum gain of 8.61 dBi, which is 24.39% higher than the single element. Using the VNSA array, we achieve 52% compactness and 6.76% bandwidth enhancement, with good measured results of S-11 < -10.2 dB at 3.24-13 GHz and 15.11% improved gain (8.14 dBi) compared to the VNSA single element. The findings show that the NTL and Vivaldi nonuniform slot profile antenna (VNSPA) theories are successful at reducing the size of the UWB WPD and VTSA without sacrificing performance. They also emphasize the Vivaldi antenna's compatibility with other circuits. These compact arrays are ideal for high-resolution medical applications like breast cancer detection (BCD) because of their high gain, wide bandwidth, directive stable radiation patterns, and low specific absorption rate (SAR). A simple BCD simulation scenario is addressed in this work. Detailed parametric studies are performed on the two arrays for impedance-matching enhancement. The computer simulation technology (CST) software is used for the simulation. Hardware measurement results prove the validity of the proposed arrays.
Açıklama
Anahtar Kelimeler
Ultra-Wideband (UWB), Vivaldi Tapered Slot Antenna (VTSA), Vivaldi Nonuniform Slot Antenna (VNSA), Specific Absorption Rate (SAR), Linear Array and High Gain
Kaynak
Telecom
WoS Q DeÄŸeri
N/A
Scopus Q DeÄŸeri
Q2
Cilt
5
Sayı
2
Künye
Saleh, S., Saeidi, T., & Timmons, N. (2024, April). Simple Compact UWB Vivaldi Antenna Arrays for Breast Cancer Detection. In Telecom (Vol. 5, No. 2, pp. 312-332). MDPI.
