A T Slot Monopole Antenna for UWB Microwave Imaging Applications

Abstract

This paper presents the design, optimisation and physical implementation of a compact ultra-wideband (UWB) printed circular monopole antenna (PCMA) for microwave imaging applications, specifically for breast cancer detection. The profile of the proposed antenna features T-Slots etching over a driven circular patch. To achieve the desired impedance bandwidth both in free-space and in proximity to human tissues, the geo-metrical profiles of the T -slot monopole antenna are optimised using the surrogate model assisted differential evolution for antenna synthesis (SADEA) optimiser. The bandwidth, gain, radiation pattern and efficiency of the optimised antenna are then evaluated. The simulation and measurement results of the antenna's responses are deduced to be in reasonable agreement for the input impedance, gain, radiation pattern and efficiency, respectively, in the operating band of 3.1 GHz to 10.6 GHz. The proposed antenna also gives an adequate radiation in the broad side direction, which contributes significantly to clutter level reduction, and makes the proposed antenna applicable for effective and efficient microwave imaging applications.

Design and Optimization of a Slotted Monopole Antenna for Ultra-Wide Band Body Centric Imaging Applications

“…In this paper, an optimized design of a compact slotted planar monopole antenna that operates in the UWB frequency ranging from 3.1 GHz to 10.6 GHz for body-centric imaging applications is proposed. In comparison to some of the published works in the literatures [12][13][14][15], as shown in Table I, the proposed antenna has a much smaller envelope size. The parallel surrogate model-assisted differential evolution for antenna synthesis (PSADEA) method [16][17][18] has been employed to find the optimal design parameters, so as to satisfy the specifications.…”

“…Monopole antennas are compact, simple structure, ease of fabrication and suitable for low-cost physical implementation [11]. They also offer a good radiation pattern and wide frequency impedance bandwidth [12]. These characteristics and other features make monopole antennas good candidates for body-centric imaging applications [12].…”

“…They also offer a good radiation pattern and wide frequency impedance bandwidth [12]. These characteristics and other features make monopole antennas good candidates for body-centric imaging applications [12]. In this paper, an optimized design of a compact slotted planar monopole antenna that operates in the UWB frequency ranging from 3.1 GHz to 10.6 GHz for body-centric imaging applications is proposed.…”

A Compact UWB Antenna Array for Breast Cancer Imaging Application using Optimisation Algorithm

“…Detection of breast cancer in its primary stage is the best option for its treatment. This underlines the serious need for a very reliable and comfortable method of breast tumor detection to serve as a complementary method to the currently used technology such as ultrasonography, imaging using magnetic resonance, computerized tomography and x-ray mammography [4].…”

“…Percentage with higher water ratio within the cancerous tissues serves as the determinant for the tumor detection [4]. Thus, imaging using microwaves antenna is another alternative for early breast cancer detection, thereby saving a lot of life.…”