Title :
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
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;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1219857
