A novel leaky mode and mode coupling effects occurring in finite substrate microstrip lines and patch antennas

Author

Allilomes, P.C. ; Zekios, C.L. ; Stafyllidis, A.N. ; Kyriacou, G.A.

Author_Institution

Dept. of Electr. & Comput. Eng., Democritus Univ. of Thrace, Xanthi, Greece

fYear

2011

fDate

12-16 Sept. 2011

Firstpage

1257

Lastpage

1260

Abstract

Mode coupling phenomena on the finite substrate microstip lines are studied. The effect of the finite substrate is related to the general concept of mode coupling initially appeared on stub loaded leaky wave structures. The nonlinear nature of the analysis of open waveguides in general is addressed. Common misunderstandings on the use of HFSS^™ regarding such an analysis are dicussed. Preliminary results based on a non-linear eigensolver [1], and their interpretation considering the effect of the finite substrate and the occurrence of a new propagating substrate mode will be presented. Finally, some comments are made on the consequences of this mode and its coupling to the first order leaky mode on the design of patch and leaky wave antennas.

Keywords

leaky wave antennas; microstrip antennas; microstrip lines; HFSS; finite substrate microstrip line; leaky mode coupling effect; nonlinear eigensolver; patch antenna; stub loaded leaky wave structure;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation in Wireless Communications (APWC), 2011 IEEE-APS Topical Conference on

Conference_Location

Torino

Print_ISBN

978-1-4577-0046-0

Type

conf

DOI

10.1109/APWC.2011.6046840

Filename

6046840