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Ultra-Wideband High Gain Vivaldi Antennas Using Additive Manufacturing
Keywords: 3D Printing, additive manufacturing, Ultra-Wide Antennas
In this paper, a low-cost fabrication technique using additive manufacturing (3D printing) is demonstrated for the fabrication of ultra-wide band (UWB) Vivaldi antennas. In communications, UWB antennas are required that have high gain and wide bandwidth (3.1 GHz to 10.6 GHz) enabling high-data rates and efficient use of frequency spectrum. 3D printing has evolved into an important technology that allows rapid and simple fabrication method for printing antennas, and other components. Two different Vivaldi antennas designs (i) Vivaldi with a slot line, and (ii) Corrugated Vivaldi are presented. The fabricated antennas have a wide bandwidth of 14 GHz and a high gain of 10 dBi. For example, the corrugated antenna exploits the capability of 3D printing to incorporate slots in the design that aids in low frequency matching with increased gain.
Mohd Ifwat Mohd Ghazali, Ph.D. Student
Michigan State Uiversity
E. Lansing, MI

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