Abstract
In this paper, a modified four-legged element frequency selective surface (FSS) with wide and dual band stop behaviour in two wireless local area network frequencies of 2.4 and 5.8 GHz have been proposed. The proposed design possesses 1050 and 1200 MHz bandwidths with insertion loss −41.45 and −35 dB around the centre operating frequencies 2.4 and 5.8 GHz, respectively. To obtain best characteristics, FSS unit cell has been designed using FR-4 substrate material having dielectric constant 4 and dissipation factor of 0.025. The structure exhibits a dual band from 1.8 to 2.85 GHz for GSM 1800/1900 MHz and Bluetooth and another band is from 5.25 to 6.45 GHz for WLAN for wideband application. It found applications into a number of vertical markets such as retail, warehousing, healthcare, manufacturing, retail and academic.
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