Accurate characterization of planar printed antennas using finite-difference time-domain method

Author

Wu, Chen ; Wu, Ke-Li ; Bi, Zhi-Qiang ; Litva, John

Author_Institution

Commun. Res. Lab., McMaster Univ., Hamilton, Ont., Canada

Volume

40

Issue

5

fYear

1992

fDate

5/1/1992 12:00:00 AM

Firstpage

526

Lastpage

534

Abstract

The finite-difference-time-domain method (FD-TD) is used to characterize complex planar printed antennas with various feed structures, which include coaxial probe feed, microstrip line feed, and aperture coupled feed structures. A coaxial probe model is developed by using a three-dimensional FD-TD technique. This model is shown to be an efficient and accurate tool for modeling coaxial line fed structures. A novel use of a dispersive absorbing boundary condition is presented for a printed antenna with a high dielectric constant. All the numerical results obtained by the FD-TD method are compared with experimental results, and the comparison shows excellent agreement over a wide frequency band

Keywords

antenna feeders; antenna theory; difference equations; microstrip antennas; time-domain analysis; 3D FD-TD; aperture coupled feed; coaxial line fed; coaxial probe feed; coaxial probe model; dielectric constant; dispersive absorbing boundary condition; feed structures; finite-difference time-domain method; frequency band; microstrip line feed; modeling; planar printed antennas; three-dimensional FD-TD; Antenna feeds; Aperture antennas; Aperture coupled antennas; Boundary conditions; Coaxial components; Dispersion; Finite difference methods; High-K gate dielectrics; Microstrip antennas; Probes;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.142627

Filename

142627