A Review of Contemporary Microwave Antenna Sensors: Designs, Fabrication Techniques, and Potential Application

This article provides a summary of recent microwave antenna sensor technologies published in peer-reviewed journals. This study primarily focuses on the resonator-based microwave sensor, microwave wearable textile antenna sensors, and resonator-based flexible metamaterial devices along with their possible industrial applications. The survey emphasizes on both the possible disadvantages and advantages of employing this technology. Furthermore, it provides an overview of the key issues addressed in the context of antenna sensors, starting with material selection and finishing with the antenna’s frame, as well as the numerous case applications. This article, in particular, offers a description of the various types of textile materials used in the creation of wearable antenna sensors. This article provides various instances of antenna sensor applications in the human body, including the detection of NaCl and sugar solutions, blood, and other biological variables like strain, finger positions, and temperature. In addition, suggestions are made regarding the potential industry and scientific obstructions, as well as future directions for the study.