Radiation characteristics of cavity backed aperture antennas in finite ground plane using the hybrid FEM/MoM technique and geometrical theory of diffraction

Abstract

ABSTRACT:A technique using hybrid Finite Element Method (

Radiation from a Cavity-Backed Circular Aperture Surrounded by Concentric Corrugations

“…Radiation from a cavity-backed circular aperture has been studied extensively due to its practical applications in aperture antennas and electromagnetic compatibility and aperture antennas [1][2][3]. Radiation from a cavitybacked single circular aperture has been analyzed by using the numerical techniques [1] and the mode matching technique [2].…”

“…Radiation from a cavitybacked single circular aperture has been analyzed by using the numerical techniques [1] and the mode matching technique [2]. Radiation from cavity-backed multiple circular apertures has also been investigated based on the mode matching technique [3].…”

Electromagnetic Radiation From a Circular Cavity With Circular Apertures in a Conducting Plane

“…There have been extensive studies on the electromagnetic field radiation from cavities with rectangular apertures [1], [2], circular apertures [3]- [5], and annular apertures [6]- [8] in a thick conducting plane. Radiated fields from a rectangular cavity with rectangular apertures are calculated based on FDTD [1] and mode matching method [2].…”

“…Radiated fields from a rectangular cavity with rectangular apertures are calculated based on FDTD [1] and mode matching method [2]. Radiation from a single circular aperture on a circular cavity has been studied based on FEM/MoM [3], FDTD [4], and the mode matching method [5]. Radiation from a cavity-backed multiple annular slots with azimuthal symmetry has been also investigated by using the Green's functions and the mode matching method [6]- [8].…”

Calculation of radiation characteristics of cavity‐backed aperture antennas using a combined finite element method, method of moments, and geometrical theory of diffraction technique

“…To eliminate the disadvantages of MoM and FEM methods, a combined approach using an FEM method inside the cavity and an MoM outside the cavity has been proposed by several authors [Jin and Volakis, 1991 a;Yuan, 1990;Jin, 1993]. Reddy et al [1996] used a combined FEM and MoM approach with rigorous feed modeling to predict 1181 characteristics of cavity-backed antennas in an infinite ground plane. Various feed lines, like rectangular, circular, and coaxial waveguides exciting the aperture through a cavity, are considered.…”