Work

A CPW‐Based Helm‐Shaped UWB Antenna for Biomedical and Microwave Imaging Applications

Year: 2025

Type: article

Abstract: Ultra‐wideband (UWB) antennas play a crucial role in biomedical and microwave imaging applications because they provide accurate imaging and diagnostics with a wide frequency range, high resolution, and reliable signal integrity. This study presents a coplanar waveguide (CPW)‐fed Helm‐shaped printed antenna with UWB characteristics for biomedical and microwave imaging applications. The antenna is compact and has total dimensions of 30 × 25 mm 2 and demonstrates an impressive UWB with a fractional bandwidth (FBW) of 122.15%, covering the frequency range from 2.9 to 12 GHz. Additionally, it achieves a peak gain of 4.8 dBi @ 11 GHz and has stable radiation characteristics across the operating bandwidth. The proposed antenna is developed in the form of a prototype, and measured results are obtained using in‐house facilities. It is observed that the measured performance is agreed well with simulations. The time domain analysis of the proposed structure is also conducted, and it is observed that the group delay is <1 ns for both side‐by‐side (SbS) and face‐to‐face configurations. Through the obtained results, it is worth mentioning that the proposed antenna design is suitable for biomedical, microwave imaging, and hyperthermia treatment applications.

Source: Journal of Sensors

DOI: 10.1155/js/2274194

Authors: Zeeshan Ahmad, Muhammad Ali Mughal, Salah Uddin Khan, M. A. Humayun, Altaf Ahmed, Sajjad Hussain