نویسنده
دانشگاه تبریز - دانشکده مهندسی برق و کامپیوتر
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسنده [English]
In this paper, we present a novel uni-directional microstrip-fed multi-layer wide tapered slot antenna with a fork-shaped tuning stub. The antenna is embedded in a multi-layer structure backed by a reactive high impedance surface (HIS) and a thick dielectric layer, and then is placed on top of a ferrite tile with a metal ground plane. The HIS layer is added for achieving ultra wideband operation, while the ferrite tile prevents back radiation. A parametric study is presented to show the effect of the various antenna dimensions on the antenna performance. The dimensions of the antenna are small enough along the x and y directions (10cm×10cm), and has ultra wide impedance bandwidth gained by the structure, ferrite and HIS layer. A prototype antenna was fabricated and measured. The measured and simulated results are in good agreement and show a positive broadside gain (>1 dB) over a 4:1 operating band (1 GHz-4 GHz) with a VSWR < 2.
کلیدواژهها [English]