Application of the three-dimensional finite-difference time-domain method to the analysis of planar microstrip circuits

Author

Sheen, David M. ; Ali, Sami M. ; Abouzahra, Mohamed D. ; Kong, Jin Au

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., MIT, Cambridge, MA, USA

Volume

38

Issue

7

fYear

1990

fDate

7/1/1990 12:00:00 AM

Firstpage

849

Lastpage

857

Abstract

A direct three-dimensional finite-difference time-domain (FDTD) method is applied to the full-wave analysis of various microstrip structures. The method is shown to be an efficient tool for modeling complicated microstrip circuit components and microstrip antennas. From the time-domain results the input impedance of a line-fed rectangular patch antenna and the frequency-dependent scattering parameters of a low-pass filter and a branch-line coupler are calculated. These circuits were fabricated and the measurements made on them are compared with the FDTD results and shown to be in good agreement

Keywords

difference equations; microstrip antennas; microwave filters; strip line components; time-domain analysis; waveguide couplers; FDTD; branch-line coupler; frequency-dependent scattering parameters; full-wave analysis; input impedance; low-pass filter; microstrip antennas; microstrip circuit components; planar microstrip circuits; rectangular patch antenna; three-dimensional finite-difference time-domain method; Antenna accessories; Circuits; Finite difference methods; Frequency; Impedance; Microstrip antennas; Microstrip components; Patch antennas; Scattering parameters; Time domain analysis;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.55775

Filename

55775