A dual wide band CPW-fed slot antenna with modified coupling slots

This paper presents a dual wide band CPW-fed slot antenna with modified coupling slots. The operating frequency of the proposed antenna includes the DCS (1710-1880 MHz), PCS (1850-1990 MHz), IMT-2000 (1920-2170 MHz), and IEEE 802.11 WLAN standards in the 2.4 GHz (2400-2484 MHz), 5.2 GHz (5150-5350 MHz) bands, mobile worldwide interoperability for microwave access (Mobile WiMAX), and WiMAX, which operate in the 2.3/2.5 GHz (2.305 - 2.360 GHz/2.5-2.69 GHz) and 5.5 GHz (5.25-5.85 GHz) bands. The antenna appears uncomplicated in design and undemanding for investigation. The lower operating band of the proposed antennas can be controlled by varying the perimeters of the radiating slot and the upper operating band depended on the perimeter of the modified coupling slots. The results of the experiment proposed antennas show the impedance bandwidths of the two operating bands, determined from 10 dB return loss, which are larger than 60% and 30% of the center frequencies. All simulation processes in this paper applied IE3D program to analyze and optimized the antennas.