Design of A Novel Directional Microstrip-fed Super-wideband Antenna

In this paper, a novel directional super wide band micro strip antenna based on a simple and new geometry has been proposed. The antenna exhibits the widest bandwidth ever reported to the authors’ knowledge from ۵۰ GHz to ۲۰۰ GHz. Its radiation pattern is approximately steady in the frequency ranges of ۵۰ GHz to ۲۰۰ GHz. The antenna consists of a club-like radiating patch, a combination of three circular patches, and a partial ground structure. Moreover, the proposed antenna has a compact volume of ۲۴ mm × ۱۸ mm × ۰.۷۸۷ mm on a RT Duroid substrate with a relative dielectric constant of ۲.۲. RT Duroid has very low loss characteristic and therefore the loss of the antenna will be very little. The simulation is performed by CST Microwave Studio simulator. Antenna design and the simulation results of radiation pattern and gain are presented and discussed in detail. Results show that the performance is very excellent in full band.

Keywords:

Super-wideband Antenna , Reflection Coefficient , Directional Pattern , Input Impedance , واژگان کلیدی: آنتن فراپهن باند , ضریب انعکاس , نمودار تابش , امپدانس ورودی