volume | PIER Journals

Abstract

A novel shaped of printed monopole antenna with a koch fractal technique is presented in this paper. The ultra-wide bandwidth (UWB) antenna is composed of a modified ground plane with two independently elements as cross and Egyptian arc shapes to improve the antenna bandwidth. PIN diode is used to connect or disconnect the circular arc between two bands to switch frequencies from 500 to 2500 MHz and from 4 to 10 GHz. This implemented antenna effectively support personal communication system (PCS 1.85-1.99) GHz, universal mobile telecommunication system (UMTS 1.92-2.17) GHz, wireless local area network (WLAN), which usually operate in the 2.4 GHz (2.4-2.484 GHz) and 5.2/5.8 GHz (5.15-5.35 GHz/5.725-5.825 GHz) bands, mobile worldwide interoperability for microwave access and WiMAX, which operate in the range from 2.305 to 2.360 GHz, from 2.5 to 2.69 GHz and from 5.25 to 5.85 GHz bands. The properties of the antenna as reflection coefficient, efficiency, radiation patterns and gain are simulated and approved by the experimental results.

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Dr. Dalia Mohammed Nasha Elsheakh

Dr. Esmat A. F. Abdallah