RECTANGULAR PATCH ANTENNA ON TEXTILE SUBSTRATE FED BY PROXIMITY COUPLING

Authors

  • Marcus Grilo
  • Fatima Salete Correra

Keywords:

Microstrip antennas, Proximity coupling, Textile antennas

Abstract

This paper presents a rectangular patch antenna fed by proximity coupling fabricated on textile substrate. The antenna was designed aiming at two objectives simultaneously: to facilitate the manufacture of the textile antenna and increase its operating frequency bandwidth. The antenna feeding circuit consists of a quarter wavelength impedance transformer cascaded to an open-ended transmission line, which is electromagnetically coupled to the antenna radiating element. Both impedance transformer and open-ended transmission line are realized by embedded microstrip lines and have the same width, facilitating the manufacture of the textile antenna. The antenna bandwidth can be increased by properly choosing the widths of the rectangular patch and feed lines. In the present study, the design and performance of textile rectangular patch antennas fed by proximity coupling and by coaxial probe are presented for comparison purposes. The antennas were designed for operation in the 2.45 GHz band and were fabricated using denim for the dielectric substrate and conductive fabric for the radiating element, ground plane, and feed lines. The experimental results are in good agreement with the simulated onesThe antenna fed by coaxial probe showed a fractional impedance bandwidth of 5.7% and the antennas fed by proximity coupling demonstrated bandwidths of 11.8% and 15.5%.

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Published

2015-08-01

How to Cite

Marcus Grilo, & Fatima Salete Correra. (2015). RECTANGULAR PATCH ANTENNA ON TEXTILE SUBSTRATE FED BY PROXIMITY COUPLING. Journal of Microwaves, Optoelectronics and Electromagnetic Applications (JMOe), 14, SI–103 to SI. Retrieved from http://www.jmoe.org/index.php/jmoe/article/view/494