Summary
International Symposium on Antennas and Propagation
2009
Session Number:2B4
Session:
Number:2B4-6
Efficient Analysis and Flexible Design of 1D LeakyWave Antennas composed by a Parallel-Plate Waveguide loaded with two Metallodielectric FSS
Jose Luis Gomez-Tornero, Maria Garcia-Vigueras, George Goussetis, Andrew R. Weily, Y. Jay Guo,
pp.429-432
Publication Date:2009/10/21
Online ISSN:2188-5079
Summary:
2D Fabry-Perot Leaky-Wave Antennas (FPLWA) have been attracting much interest in the last years [1-3]. These antennas offer a simple solution to achieve highly directive patterns from a single point source by using Partially Reflective Surfaces (PRS). FPLWA are normally designed to radiate at broadside [1-3], although conical beam steering has also been proposed [4]. On the other hand, 1D LWA based on the introduction of a printed circuit inside a waveguide has been recently proposed [5-6]. In particular, this hybrid waveguide printed-circuit technology offers a flexible control of the propagating constant of the fundamental leaky-mode. This allows a flexible tapering of the radiation pattern, synthesizing any pointing angle, radiation efficiency and side lobes distributions [5-6]. In this paper, an original 1D FPLWA is proposed by the combination of these two concepts. This structure (shown in Fig1-a), consists of a parallel plate waveguide (PPW) loaded by two dipole-based Frequency Selective Surfaces (FSS) [1-3]. The first FSS is inserted inside the top of the PPW, and acts as a PRS [1-2]. The other FSS is located at the bottom of the PPW and is backed by a metal surface, behaving as an Artificial Magnetic Conductor (AMC) [3].