LTE Band Filtering Applications of a Fractal Based Frequency Selective Surface

In this paper we explore possibilities to tailor the transmittance of frequency selective surfaces (FSS’s) realized on printed circuit boards (PCB’s) to match design requirements by duplication of the metal pattern and fractalization. An FSS based on a novel unit cell structure is introduced, which is shown to exhibit angular stability up to 60 deg for TE and 45 deg for TM case. For the evaluation of the fine-tuning capabilities, a parametric study is performed. The configuration can be used for filtering in LTE, Wi-Fi and X band, commonly used in Automotive environment.