A Fractal Tetrahedron Antenna Fabricated Using Metal 3D printing

Sierpinski tetrahedron fractal antenna is fabricated using metal additive manufacturing techniques. Metal 3D printing is able to fabricate the complex internal and external features while providing acceptable mechanical strength. The main advantage of this type of fractals is that it is able to reduce the amount of material used in additive manufacturing processes. This can also lead to weight reduction, an important factor in aerospace and defense applications. Selective laser melting of metal powder has been employed for the fabrication. The input matching has been optimized for a first resonance at the 2.4GHz, making it suitable for existing wireless communications. The basic performance of the antenna is summarized through simulations and experimental results.