Abstract
Multi band antenna with miniature volume is of more requests for the ever growing wireless communication industry. In this paper, a double-layers and five-bands of microstrip patch antenna is designed. The S-parameter as well as radiation pattern are investigated. On the other hand, the proposed antenna is suggested to be employed in a handset mobile phone that covers five frequency bands as follows; GSM 900 (889– 960) GSM 1800 DCS 1800, (1710–1885)W-CDMA (Wideband Code Division Multiple Access), IMT 2000 (International Mobile Telecommunication)1885–2200, Wi-Fi/WLAN (IEEE 802.11 b/g/n) ISM 2450 (Industrial, Scientific and Medical) (2400–2500) and WiMax (Worldwide Interoperability for Microwave access) which have been established by the IEEE 802.16 working group. The proposed square patch antenna has been gained return loss of −33dB at 2.0924 GHz, −25dB at 2.67 GHz, −20.5 dB at 1.745 GHz and −20dB at 2.44GHz and −18dB at 0. 94GHz frequencies. Design and simulation of the presented structure was based on CST software package. Finally, five frequency bands are produced and the antenna shows encouraged results for WLAN applications.
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