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Design of Band Stop Filter with Frequency Selective Surfaces Analysis by Implementing the Golden Ratio Rule



Author(s)

Mehmet Duman¹ and Merve Güney Duman²

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DOI:10.17265/2161-6221/2017.3-4.004

1. Electronics and Communication Engineering, Faculty of Engineering, Kocaeli University, Kocaeli 41380, Turkey
2. Mathematics, Faculty of Art and Sciences, Sakarya University, Sakarya 54000, Turkey

The designs which are made with FSS (frequency selective surfaces) analysis can be in different shapes and sizes. Square, round, plus, triangle, snowflake etc. are some of them. In this article, BSF (band stop filter) is designed by using FSS with the Golden Ratio Rule which is found by Fibonacci. In Golden Ratio Rule, each number is the sum of two numbers coming before that number and the ratio of every sequential number equals approximately 1.618, exact 1.618 at last. In design, Golden Ratio Rule is used while forming thickness, width and length. All of the simulations are run in CST (computer simulation technology) computer program between 700 MHz and 1,700 MHz in frequency domain section. There is not any active or passive component in the design. Only 80 cm × 130 cm copper plate and the shapes over it, the BSF with 1.35 GHz CF (center frequency) and 41 MHz BW (bandwidth) frequency is formed and has become ready to perform. If shapes and sizes are changed while preserving the ratio, it can be reachable different CF and BW frequencies. After obtaining the OF, the design will block the electromagnetic effects in accordance with BSF, and electric or magnetic waves cannot transmit from the copper plate, as a result; harmful side effects can be stopped.

BSF, frequency selective surfaces, Golden Ratio Rule.