Title :
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
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;
Conference_Titel :
Microwave Symposium Digest, 2002 IEEE MTT-S International
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-7239-5
DOI :
10.1109/MWSYM.2002.1011846
