A Compact Wearable Textile Antenna with Dual Band-Notched Characteristics for UWB Applications

Abstract

This paper presents design and simulation analysis of a Compact Wearable Textile Antenna with Dual Band-notched characteristics for UWB applications. The antenna consists of a CPW fed semicircular radiator with two semicircular split ring resonators (SSRR). The antenna has a dimension of 43mm $\times 40$ mm $\times 2$ mm, designed on the leather substrate with dielectric constant 1.65 and a loss tangent of 0.02 and uses copper foil as conducting material. The frequency band-notched characteristics are achieved by inserting two semicircular split ring resonators (SSRR) on the patch of the antenna. The first notch band is obtained from 2.3 – 2.5GHz for Bluetooth application band and the second notch band is obtained from 3.3 – 3.7GHz for WiMAX (IEEE 802.16) application band. It is observed that the notch frequencies can be controlled by varying the widths of the slots, the distance between two semicircular rings and the two ends of the semicircular ring slot. The simulated frequency results show that the antenna has an impedance bandwidth of 1.8 – 10.7GHz and reflection coefficient less than -10dB, except the two eliminated bands to reject the Bluetooth application band at 2.4GHz and the WiMAX application band 3.3 - 3.6GHz. Ansys HFSS Electromagnetic simulator has been used for simulations and results are presented.