A Wide-Beam 3D-Fractal Hilbert GNSS Antenna

This paper presents a wide-beam 3D-fractal Hilbert GNSS antenna in the RDSS-S band. The proposed antenna consists of a novel radiator with four two-order 3D-fractal Hilbert curve radiating arms, and the corresponding feeding circuit. The beamwidth, with the gain greater than 0dB of the antenna, is 148° (Phi=0°) and 138° (Phi=90°). The size of the antenna is 30mm×30mm×12mm. In addition, the model of the 3D-fractal Hilbert curve and a prototype of the two-order RDSS-S antenna were manufactured by 3D printing. Simulated and measured results show that the proposed wide-beam 3D-Fractal Hilbert antenna is very suitable for GNSS.