A cascaded brick shaped slot antenna design for WLAN and Wimax applications

Abstract

A low profile Dual Band slot antenna using a microstrip resonating feeding line to improve upper and lower band edge selectivity is discussed in this paper. The proposed antenna covers multiple frequency bands (4.3-5.8GHz and 7.25-7.4GHz). Compared with the traditional slot antennas, the proposed antenna has more specific advantages of band-edge selectivity, size and is suitable for WiMax, WLAN and satellite communication applications. The proposed antenna is of the dimensions 24.5mm × 12.5mm × 0.8mm which is fabricated on FR4 epoxy substrate which is having a dielectric constant of εr=4.4 and a loss tangent of 0.02. The ascertain measured results show that the antenna exhibits a dual band coverage with acceptable reflection coefficient loss less than -10 dB from 4.3 to 5.8GHz and from 7.25 to 7.4GHz,. The proposed antenna is simpler and cost effective.