Wearable Textile Antenna Designs for Multiband Frequencies

Abstract

This paper explains the implementation of two different microstrip feeding techniques i.e. with and without inset feed.This paper also deals with the comparative study of the behaviour of the antenna designs for different substrate materials and the effect of the slot on the antenna performance. The antenna design with inset feed has return loss of -42.947dB and the antenna design without inset feed design has -10.53 dB return loss at 2.5GHz. The return loss of Jeans substrate with inset fee design is -43.44dB whereas the return loss of curtain cotton and polyester substrate is-14.44dB&-13.19 dB respectively. After analysing various antenna parameters like gain, return loss and the bandwidth, it has been observed that the microstrip without inset feed with jeans material is better than curtain cotton and polyester to meet the desired features of the wearable antenna designs. The proposed antenna designs resonate at multiband frequencies suitable for WiFi, Bluetooth ,WiMax ,Medical and RF applications