A Dual-Band Intelligent Frequency Selective Surface Unit Cell For Future Communication Systems

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Abstract
A reconfigurable dual-band unit cell based on frequency selective surfaces (RDBFSS) for 6G applications is presented. The proposed design consists of two patches mounted on a substrate. The patches are composed of hollows, and connected through two PIN diodes to achieve a dual-band operation with high isolation. The proposed design reconfigures its functional characteristic operations between the stop and pass bands at frequencies 5.8GHz and 28GHz, by changing the biasing of the PIN diodes. The transmission/reflection characteristics of the incident waves are investigated by changing the state of the pin diode, where the patches are responsible to generate the reflection/transmission at frequency 5.8 GHz, while the notches are responsible for generating the reflection/transmission at frequency 28GHz. The proposed unit cell is simulated, where good results are achieved.

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