Slotted Planar Dual-band Antenna for Wireless Communication

Abstract

A printed patch antenna that facilitates dual-band frequency operation for wireless communication applications has been presented in this paper. The presented antenna facilitates operation at the frequencies of 2.45 GHz and 3.48 GHz which are useful in wireless communication applications such as Bluetooth 2.0 and Wi-MAX. A low loss Fire Retardant-4 has been used to design the antenna having relative permittivity εr = 4.4 and dielectric loss tangent of 0.02. The presented multi-band frequency antenna has dimensions of 70 × 60 × 2.87 mm3. The coaxial feed has been used as feed to the proposed rectangular patch antenna. A considerable gain of 7.69 dB and 5.78 dB for the operating frequencies of 2.45 GHz and 3.48 GHz accordingly is observed. The geometrical shape of the antenna consists of two symmetrical square slots placed equidistant from a cross-slot in the center of the radiating patch which provides the dual-band operation.