A dielectric embedded antenna for super wideband applications

3D-Printed Super-Wideband Spidron Fractal Cube Antenna with Laminated Copper

“…Their bandwidths and sizes are illustrated in Table 1. It is evident that the proposed antenna exhibits a wider operating bandwidth ratio and a smaller size compared to those of previous antennas [5,6,12]. The other antennas [7,9,10] are smaller than the proposed antenna as well.…”

“…As the frequency increases, the loss tangent of the 3D printer filament material increases, so the antenna efficiency decreases with increasing frequency. To verify the performance, the proposed antenna was compared with previously proposed antennas [5][6][7]9,10,12]. Their bandwidths and sizes are illustrated in Table 1.…”

“…−10 dB Reflection Ratio Bandwidth (GHz) Size (λ 3 0 ) Monopolar patch antenna [5] 25.9:1 0.46 × 0.46 × 0.08 Dielectric embedded monopole antenna [6] 10.7:1 1.50 × 1.50 × 0.3 Fractal monopole dielectric resonator antenna [7] 20.1:1 0.1 × 0.1 × 0.21 Bow-tie-shaped antenna [9] 3.77:1 0.1 × 0.35 × 0.01 Printed arrow-shaped antenna [10] 2.83:1 0.22 × 0.22 × 0.01 Teardrop spherical antenna [12] less than 10:1 0.27 × 0.27 × 0.27 Proposed antenna 34.9:1 0.25 × 0.25 × 0.25…”

“…SWB antennas have received much attention in military and civilian systems because their broadband characteristics can provide high data-rate services [2]. For this reason, several 2D and 3D SWB antennas have been introduced [3][4][5][6][7]. The modified star-triangular fractal monopole antenna introduced by Waladi et al [3] and the asymmetric coplanar strip fed hexagonal loop antenna from Trinh-Van et al [4] have 2D geometries and compact sizes, meeting the −10 dB reflection ratio bandwidth requirement of 30:1 or greater.…”

“…However, their performances can deteriorate with changes in the ground size or platform. In other work [5][6][7], 3D SWB antennas with a monopolar patch and dielectric resonator were proposed. It was found that these antennas are insensitive to the ground platform used; however, the fabrication of the 3D structure of these antennas remains a challenge.…”