FDTD study of surface waves in microstrip and patch structures

Author

Semouchkina, E. ; Semouchkin, G. ; Wenwu Cao ; Mittra, R.

Author_Institution

Mater. Res. Inst., Pennsylvania State Univ., University Park, PA, USA

Volume

2

fYear

2002

fDate

2-7 June 2002

Firstpage

1127

Abstract

The Finite Difference Time Domain (FDTD) method is employed to visualize surface wave propagation in microstrip line and patch structures. Signal distortion in microstrip lines caused by surface waves is studied in substrates with different permittivities. Electric and magnetic field components of surface waves, excited by different sources, are analyzed and different types of surface waves are identified. An efficient method to suppress surface wave propagation using low-K plugs inserted in higher-K substrates is demonstrated.

Keywords

antenna theory; finite difference time-domain analysis; microstrip antennas; microstrip discontinuities; microstrip lines; surface electromagnetic waves; FDTD method; electric field components; high-K substrates; infinite microstrip lines; low-K plugs; magnetic field components; microstrip line structures; open-ended microstrip lines; patch structures; patch-type microstrip structures; signal distortion; substrate permittivity; surface wave propagation; Distortion; Finite difference methods; Magnetic analysis; Magnetic fields; Microstrip; Permittivity; Plugs; Surface waves; Time domain analysis; Visualization;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2002 IEEE MTT-S International

Conference_Location

Seattle, WA, USA

ISSN

0149-645X

Print_ISBN

0-7803-7239-5

Type

conf

DOI

10.1109/MWSYM.2002.1011846

Filename

1011846