Abstract

In this paper a novel circularly polarized (CP) leaky-wave antenna (LWA) based on the corrugated substrate integrated waveguide (CSIW) is proposed. It is composed of eight slot pair elements on top surface of the CSIW, and is designed to operate around 16.4GHz. The design approach is based on the analysis and optimization of the aperture fields of one radiation unit cell in order to produce good performance of circular polarization. The simulation results show that broadside radiation can be realized that is useful in practical application, and good axial ratio (AR) can be obtained in the main beam direction.

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