Design of artificial magnetic ground planes (AMGs) utilizing frequency selective surfaces embedded in multilayer structures with electric and magnetic losses

Author

Junho Yeo ; Ji-fu Ma ; Mittra, R.

Author_Institution

Electromagn. Commun. Lab., Pennsylvania State Univ., University Park, PA, USA

Volume

3

fYear

2003

fDate

22-27 June 2003

Firstpage

343

Abstract

In this paper we present a novel approach to improving the bandwidth of the microstrip antennas using frequency selective surfaces (FSSs) as an artificial magnetic ground plane (AMG). The micro-genetic algorithm (MGA) is employed to derive an optimal FSS composite configuration that achieves the near unity-magnitude and zero-phase condition for the reflection coefficient of an artificial surface at the desired frequency band. The FSS element shape, electric and magnetic losses of dielectric layers as well as metallic loss of FSSs are composite parameters optimized by the MGA.

Keywords

antenna earths; dielectric losses; frequency selective surfaces; genetic algorithms; magnetic leakage; microstrip antennas; periodic structures; artificial magnetic ground planes; bandwidth enhancement; composite parameters; dielectric layers; dual-band antenna; electric losses; embedded FSS; frequency selective surfaces; magnetic losses; metallic loss; micro-genetic algorithm; microstrip antennas; multilayer structures; near unity-magnitude; optimal FSS composite; zero-phase condition; Bandwidth; Dielectric losses; Dielectric substrates; Frequency selective surfaces; Magnetic losses; Magnetic multilayers; Microstrip antennas; Periodic structures; Reflection; Shape;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2003. IEEE

Conference_Location

Columbus, OH, USA

Print_ISBN

0-7803-7846-6

Type

conf

DOI

10.1109/APS.2003.1219857

Filename

1219857