Compact Dual Band FSS For Microwave Transmission

Ismatuzzulfa, Shahrowardi (2013) Compact Dual Band FSS For Microwave Transmission. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

One of the system engineering used in wireless technology is FSS which is stands for Frequency Selective Surface. The characteristic of FSS is capable to filter the desired signals or waves pass through the surface while any other unwanted signals or waves will be reflected back. In the wireless communication system, almost every wireless technology uses radio waves to communicate, specifically in microwave transmission. These signals or waves might be interfered with each other. Therefore, these signals must be isolated and the interference must be reduced. The objective of this project is to design a compact dual-band FSS for microwave transmission at a frequency of 2.4GHz and 5.2GHz. The technique used to achieve dual-band FSS is by using a double loop structure. This FSS is compactly designed whereby the FSS is capable in resonating dual pass band signal in a single unit structure. The compact design is required since many applications have a very limited space. The FSS was designed and simulated by using CST Studio Suite software. The result of the simulation shows an average return loss of -27.2dB at a resonant frequency of 2.4GHz, whereas -18.5dB at 5.2GHz. Meanwhile, the measurement results shows an average of -17.2dB return loss at 2.4GHz and -16.8dB at 5.2GHz. Some of the applications of FSS are RADOME, sub-reflectors of antenna, spatial signal filtering, energy saving glass (ESG), and satellite communications.

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