Dual-Band Single-Layer Fractal Frequency Selective Surface for 5G Applications

Due to the global growth in popularity of Fifth Generation (5G) cellular communications, demand for shielding against it has risen a variety applications, mainly related cybersecurity but also isolation, calm areas and so on. This research paper aims provide suitable dual-band fractal FSS (Frequency Selective Surface) 5G lower band frequencies: 750 MHz 3.5 GHz. The unit cell is shape bow tie, where each triangular parts are Sierpiński triangles. One major addition central metal strip make manufacturing more feasible tune operation frequencies bandwidths. As with different stage antenna, stages design behave differently. For this application, 2 sufficient, as we able cover frequency bands among those included FR1 spectrum. Some equations were derived using linear regression order specific tools building an FSS. These have high accuracy can be used adapt proposed other frequencies. parameters, which not represented aforementioned equations, adjusted minor tweaking final design. performs well except under large incidence angles. should taken into account when proposing installation structure based on it. A good agreement between simulation measurement results observed.