Designs of Textile Antenna Arrays for Smart Clothing Applications

Author:

Chin Kuo-Sheng1,Wu Chi-Sheng1,Shen Chien-Lung2,Tsai Kun-Chuan2

Affiliation:

1. Department of Electronic Engineering , Chang Gung University No. 259 Wenhwa 1st Rd., Kweishan Dist., Taoyuan , Taiwan, R.O.C.

2. Taiwan Textile Research Institute No. 6, Chengtian Rd., Tucheng Dist., New Taipei City , Taiwan, R.O.C.

Abstract

Abstract In this work, three designs of textile antennas, namely, a rectangular microstrip patch antenna, annular slot antenna, and planar inverted-F antenna (PIFA), operating in the 2.45 GHz WLAN band were developed for smart clothing applications. Conductive textile, a copper-plated polyester fabric, was used for fabricating antenna radiators and grounds. An insulating neoprene fabric with a thickness of 4 mm and a permittivity of 1.5 was used for preparing the substrates. The textile patch antenna achieved a maximum gain of 5.96 dBi and a bandwidth of 4.6%. The annual slot antenna showed a moderate gain and bandwidth of 2.9 dBi and 13.1%, respectively. The PIFA achieved the widest bandwidth of 31% but the smallest gain of 1.2 dBi. Furthermore, the performance deterioration of the proposed antennas under various bending conditions was analyzed to evaluate their suitability for wearable applications. Moreover, two 2 × 2 patch and slot antenna arrays were assembled to increase gain and bandwidth. The measured results proved that the developed antenna designs provide superior performance.

Publisher

Walter de Gruyter GmbH

Subject

General Materials Science

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