Effect of Bending Condition towards the Performance of Pac-Man Textile Antenna

A. A.  Samat; D. N. A.  Zaidel; R.  Anwar; M. M. M.  Sahidi; D. A. A.  Mat; M. R. M.  Sharip

Authors

A. A. Samat Department of Electrical and Electronics Engineering, Faculty of Engineering, Universiti Malaysia Sarawak (UNIMAS), Kota Samarahan, Sarawak, Malaysia
D. N. A. Zaidel Department of Electrical and Electronics Engineering, Faculty of Engineering, Universiti Malaysia Sarawak (UNIMAS), Kota Samarahan, Sarawak, Malaysia
R. Anwar School of Applied Science, Telkom University, Bandung, Indonesia
M. M. M. Sahidi Department of Electrical and Electronics Engineering, Faculty of Engineering, Universiti Malaysia Sarawak (UNIMAS), Kota Samarahan, Sarawak, Malaysia
D. A. A. Mat Department of Electrical and Electronics Engineering, Faculty of Engineering, Universiti Malaysia Sarawak (UNIMAS), Kota Samarahan, Sarawak, Malaysia
M. R. M. Sharip Institute of High Voltage and High Current, School of Electrical Engineering, Universiti Teknologi Malaysia, Johor Bahru, Malaysia

Keywords:

ISM Band, Jeans Material, Narrow Bandwidth, Pacman Antenna, Textile Antenna

Abstract

This paper aims to design a sectorial slot Pac-Man textile patch antenna designed specifically for the 2.45 GHz ISM band (WLAN), catering to the needs of smart wearable devices. The antenna's performance was thoroughly evaluated in terms of resonance frequency, return loss, and voltage standing wave ratio (VSWR) while subjected to bending conditions with four different cylinder radii. Leveraging jeans as the substrate material, with a dielectric constant, of 1.7 and 1mm thickness, the design demonstrates exceptional promise where jeans proven its suitability as a textile antenna substrate. Based on the simulation results by using CST Microwave Studio software, it is shown that using jeans as a substrate material and maintaining the design with the previous research have resulted in an acceptable return loss of -15.33 dB with a VSWR of 1.42. Also, by comparing to the conventional circular microstrip patch antenna, the improvement can be seen in the antenna bandwidth by 10.79%, from 39.7 MHz to 44.5 MHz. While the proposed antenna exhibits a narrow bandwidth of 1.81%, it also holds significant potential for mobile applications and government security systems emphasizing privacy protection.