5G antenna simulationThe demand for high speed for mobile communication is rapidly growing. The amount of mobile data has exploded throughout the years due to the availability of smart handheld devices, which support broadband wireless applications such as multimedia and interactive gaming. To meet these needs, the research and development of fifth generation (5G) antenna is already underway. This article shows the workflow and simulation features in HFWorks, that enable antenna engineers to envision and design fifth generation mobile antennas. In this article, the simulation of a Dual-Band mm-wave antenna is presented.
Solidworks 5G antenna model
Figure1 - 3D model of Dual Band antenna for 5G applicationsFigure 1 shows the antenna which consists of a square patch that comprises L-shaped slots close to the patch edges. This arrangement adds capacitive and inductive effects, which results in two distinct and desirable resonant mm-wave frequencies: 28 GHz and 38 GHz. The antenna is simulated using RT/Duroid with a relative permittivity of 2.2 and dielectric loss tangent of 0.0009. The structure is excited with a micro strip feed line of 0.2mm width to obtain an impedance of 100 Ohms. The electrical parameters of a structure like the one in this example can be calculated using ATLASS . The geometrical parameters of the antenna (L1, L2, t1, t2, t3, t4, t5, Lf, Wf and Df) are defined in a file and they are imported into SolidWorks as equations to facilitate the parametric workflow. Figure 2 shows the main dimensions of the antenna.
S-Parameters of the 5G antenna
Figure 3 shows the results of S-Parameters of the patch antenna simulated using HFWorks and the measured results . The resonant frequencies were found at 27.375GHz with a reflection coefficient of -29.87dB and at 37.125 GHz with a reflection coefficient of -16.39 dB, respectively.
Gain of the 5G antenna
The far field simulation shows the distribution of the field around the model at a distance from the structure. Figure 4 (a) illustrates the gain pattern in a 3D format at the first resonance frequency of 27.375 GHz, and Figure 4 (b) shows the same gain pattern in a 2D format.