Design of on Chip On-Chip CMOS Inverted E-Shaped Textile Antenna for Wearable Wireless Sensors Applications

Abstract

Recent advances in wearable technology for healthcare monitoring create a need for flexible, miniaturized antennas that can enable wireless connectivity. This paper presents the design and experimental validation of an inverted E-shaped textile microstrip patch antenna for wearable applications in the 2.4 GHz ISM band. A rectangular slot and pair of loaded strips are used in combination with the inverted E-shape to achieve significant miniaturization of 75% compared to a standard patch antenna, with a final size of 30 x 20 mm. The antenna demonstrates good reflection coefficient below -10 dB in the operating band along with acceptable radiation characteristics including omnidirectional patterns. Experimental results confirm adequate performance under varied bending curvatures with efficiencies of 63-76%. The proposed antenna provides an optimal combination of miniaturized profile, flexibility and radiation performance for integration in next-generation wearable wireless sensors.