Reflector antenna design in different frequencies using frequency selective surfaces

According to the way of using radio waves, antennas with receiver or transmitter characteristics can be mentioned [1]. [...]for the feed antenna radiating with 4 GHz operating frequency, FSSs do not show reflective properties, while obtaining a fan blade type antenna structure, FSSs for the other feed antenna radiating with 5 GHz operating frequency show a reflective feature and it is thought to be obtained [6], [7]. FSS design for recommended reflector antenna model Defining characteristics of the frequency-selective surface to be designed for the proposed reflector antenna model can be listed as [8], [9]: a) FSS is expected to reduce the amplitude of electromagnetic waves transmitted at this frequency by at least 10 dB by showing band-quenching filter characteristic for S21 transmission coefficient at 5 GHz operating frequency. b) FSS is expected to directly reflect the incoming electromagnetic wave at 5 GHz operating frequency without decreasing its amplitude by showing a very good reflection characteristic for S11 reflection coefficient. c) FSS is expected to transmit directly the incoming electromagnetic wave at 4 GHz operating frequency for S21 transmission coefficient without any reduction in amplitude. d) FSS is expected to reduce the amplitude of the electromagnetic waves reflected at this frequency by at least 10 dB by showing band-quenching filter characteristic for Sll reflection coefficient at 4 GHz operating frequency. [...]the frequency behavior of the FSS to be designed is expected to be as independent as possible in terms of the arrival of electromagnetic waves up to at least 500.