Title :
Dispersion characteristics of multi-layer Fabry-Perot Leaky-Wave antennas
Author :
Konstantinidis, Konstantinos ; Feresidis, Alexandros P. ; Hall, Peter S.
Author_Institution :
Sch. of Electr., Electron. & Comput. Eng., Univ. of Birmingham, Birmingham, UK
Abstract :
In this paper we study the dispersion properties of broadband 2-D multi-layer Fabry Perot Leaky-Wave antennas (LWA). The structure consists of three layers of periodic metallodielectric Partially Reflective Surfaces (PRS) placed over a ground plane forming three air cavities of about half wavelength each. Initially, full wave periodic analysis is employed in commercial simulation software (CST Microwave Studio™) to estimate the directivity performance through measuring the near field and using reciprocity. A dispersion analysis of the leaky modes of the structure is performed by calculating the complex wavenumber within the first cavity. A dipole source is used for excitation of the cavity modes.
Keywords :
broadband antennas; dispersion (wave); leaky wave antennas; planar antennas; LWA; cavity modes; commercial simulation software; complex wavenumber; dipole source; directivity performance; dispersion analysis; multilayer Fabry-Perot leaky-wave antennas; periodic metallodielectric partially reflective surfaces; Broadband antennas; Cavity resonators; Dispersion; Leaky wave antennas; Resonant frequency; Fabry-Perot cavity (FPC); Leaky-Wave antenna (LWAs); Periodic surfaces;
Conference_Titel :
Antennas and Propagation (EuCAP), 2014 8th European Conference on
Conference_Location :
The Hague
DOI :
10.1109/EuCAP.2014.6901920
