Design and Numerical Analysis of a Compact Microstrip Antenna Sensor for Wireless Body Area Networks

The design and analysis of wearable, reshaped rectangular patch antenna with resonant frequency of 2.5 GHz is proposed. The proposed antenna can be used as a microstrip sensor for wearable applications, which is made flexible and compact by using Arlon AD 1000 with thickness 1.6 mm and high dielectric constant 10.2, as the dielectric substrate. The miniaturization is further achieved by reshaping the rectangular patch which makes the overall dimensions of antenna as 25x25x1.6 mm3. Using the Ansys High-Frequency Structure Simulator software, various parameters like return loss, gain, VSWR, radiation efficiency and directivity are examined and validated using finite element approach. Proposed antenna exhibits a gain of 2.4275 dB, -25.6686 dB return loss, -10 dB bandwidth of 123 MHz, and directivity of 3.2742 dB, according to the simulation findings. Because of its compact design and flexibility, the proposed antenna can be employed as a microstrip sensor in Wireless Body Area Network applications.