Design of a wide dual-band coplanar probe feed antenna for WLANs applications

Abstract EN

This paper presents a new design to obtain wide dual-band operation from a coplanar probe feed antenna loaded with two shorted walls.

The lower band of proposed antenna has a 10 dB bandwidth of 611 MHz (24.

18%) around the center frequency 2527MHz, and the upper band has a bandwidth of 1255 MHz (27.

88%) around the center frequency 4501MHz.

The obtained bandwidths cover WLANs operations on all bands.

The bandwidth of the first operating frequency covers ISM band (2400-2483.

5) MHz, which is required by IEEE 802.

11b, g and Bluetooth standards, and the bandwidth of the second operating frequency covers U-NII1 (5150-5350) MHz band, which is required by IEEE 802.

11a and HiperLAN2 standards, and also covers U-NII2 (5470-5725) MHz and U-NII3/ISM (5725-5825) MHz bands, which are required by IEEE 802.

11a standard.

A three dimensional finite-difference time-domain (3-D FDTD) method is employed to analyze the proposed structure and find its performance.

The simulated results are compared with the experimental results.