Design and Parametric Study of a Suspended Conformal Patch Antenna

In this paper, a suspended conformal patch antenna (SCPA) is presented for improving the radiation pattern and gain of the phased antenna array. The antenna structure is designed by using a rectangular patch operating at 2.45 GHz. The combination of FR4 substrate and air-gap is used to enhance the antenna gain with the compact size. The simulation of the antenna was done based on CST Microwave Studio 2021. The parametric study of the proposed antenna such as reflection coefficient, radiation pattern, and gain with various radii of curvatures are also demonstrated. The simulated and measured results of the proposed antenna are also compared with a suspended planar patch antenna (SPPA). The results show that the antenna beamwidth increases with decreasing the radius of curvature. The single patch of SCPA purposes to obtain the unidirectional pattern and wide-beamwidth antenna, which is appropriate for a constant-gain phased antenna array.