Abstract
A Broadband High Gain Circularly Polarized Antenna System for Cognitive Radio
Highlights
The Cognitive Radio for Satellite Communication (CoRaSat) project built a platform for investigating, developing, and demonstrating cognitive radio (CR) techniques for efficient spectrum exploitation in Satellite Communication (SatCom) systems
We proposed a design to maximally meet these challenges
This article presents a detailed analysis of broadband high gain LHCP cavity antenna system
Summary
The Cognitive Radio for Satellite Communication (CoRaSat) project built a platform for investigating, developing, and demonstrating cognitive radio (CR) techniques for efficient spectrum exploitation in Satellite Communication (SatCom) systems. SatCom technology deals with greater capacity, higher quality in communication, and wider coverage at remote and sparsely populated areas [1–3]. It requires a CR antenna system with high gain, low sidelobes, and circular polarization (CP). Two commonly used principles for high gain are antenna arraying and Fabry-Perot (FP) method [4–11]. The former increases the footprint of the antenna system as it requires lateral expansion both for feed and placement of radiating elements. On the other hand, based on stacking, the FP [12–21] offers the smallest footprint Even in this configuration, employing multi-layer PRS for high gain with desired sidelobe level and cross-polarization, is difficult. We proposed a design to maximally meet these challenges
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