Active frequency selective surface with switchable response for satellite communications in X and Ka bands

Abstract

This article proposes an active frequency selective surface (FSS) with application to satellite multi-band antennas in X and Ka bands. The FSS offers two reflective bands at 20 and 30 GHz (downlink and uplink frequencies of broadband communication satellites in Ka-band) under one biasing state, whereas the frequency characteristics are switched in X-band (between 9 and 12 GHz, frequencies used for broadcast satellite services and space exploration) under the second biasing state. The unit cell of the FSS consists of three metallization layers, including four PIN diodes on the bottom layer that provide reconfigurability in X-band. The FSS performance has been analyzed using an equivalent circuit model diagram, which provides a better understanding of the operation principle. The proposed FSS exhibits a robust transmission response for incidence angles up to 40 . Several samples of the FSS formed by a 2 Â 4 cell array have been fabricated and measured in a waveguide simulator to confirm the results of the electromagnetic simulations at the lower operating frequencies.

A broadband second-order bandpass frequency selective surface for microwave and millimeter wave application

“…These attributes position the proposed FSS as a viable solution for dual-band radome applications in modern airborne detection radars operating across microwave and millimeter-wave frequencies. Additionally, it can be applied in satellite communication and filtering systems to address interference challenges between multiple modules and optimize radar system performance 8 , 9 .…”

Customizable Substrate Integrated Waveguide Based Dual Pole Band Pass Filter for X Band Application

“…They are employed in defense tracking, control of air traffic and marine vessel traffic, weather monitoring, and vehicle speed detection. Their significance in the current communication infrastructure is highlighted by their capacity to adjust and react in real-time to varying frequency requirements [17][18][19].…”

Design of compact dual‐band shared‐aperture antenna system based on frequency selective surface

“…An ultrabroadband compact tri‐band notched FSS is proposed in Katoch et al, 14 which is angularly stable to 70° and has the attenuation of more than 25 dB at resonance. An active FSS is proposed in Abdollahvand et al, 15 which provides two reflection bands of 20 and 30 GHz in one biasing state, while in the second biasing state the frequency characteristics are switched in the X‐band. A dual notched and angularly stable FSS is proposed in Katoch et al, 16 which has dual resonant bands at 3.08 and 10.2 GHz, and has a passband whose resonant frequency is located at 4.6 GHz.…”