Broadband EBG Structures with Compact Unit Cell

Author

Stark, A. ; Prorok, Stefan ; Jacob, Arne F.

Author_Institution

Inst. fur Hochfrequenztech., Tech. Univ. Hamburg-Harburg, Hamburg

fYear

2008

fDate

27-31 Oct. 2008

Firstpage

698

Lastpage

701

Abstract

The design of a hook-like EBG structure with a small unit cell size is presented in this paper. This hook-like structure has a high inductance of the equivalent electrical LC-circuit, which enables the realization of broadband band-gaps at very low center frequencies. Simulation and measurements show, that the novel structure improves the relative bandwidth by 77% and lattice size by 59% compared to the standard mushroom-like EBG structure. In addition, a second EBG structure with a relative bandwidth of 15% is presented, which is generated with the aid of a genetic algorithm (GA). Measurement results of the proposed designs show good agreement with simulation.

Keywords

genetic algorithms; microstrip lines; periodic structures; photonic band gap; broadband EBG structures; broadband band-gaps; compact unit cell; equivalent electrical circuit; genetic algorithm; hook-like EBG structure; microstrip line; Bandwidth; Frequency; Genetic algorithms; Inductance; Lattices; Measurement standards; Metamaterials; Periodic structures; Photonic band gap; Size measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2008. EuMC 2008. 38th European

Conference_Location

Amsterdam

Print_ISBN

978-2-87487-006-4

Type

conf

DOI

10.1109/EUMC.2008.4751548

Filename

4751548