Antenna efficiency calculation of planar antenna using FDTD method

Author

Arima, Takuji ; Asami, Kentaro ; Uno, Toru

Author_Institution

Tokyo Univ. of Agric. & Technol., Japan

fYear

2005

fDate

3-8 July 2005

Firstpage

146

Abstract

The finite difference time domain (FDTD) method has become a powerful tool for analyzing electromagnetic problems with complex geometries. The strength of the method is its simplicity and efficiency for modeling the electromagnetic field within a practical level of accuracy. On the other hand, antenna efficiency is usually calculated from dissipated power, which is a Joule loss, and the input power of the antenna in the original FDTD calculation. However, the results indicate an inappropriate value, even if the geometry is as relatively simple as a planar antenna. The paper points out the difficulties and proposes a solution for the planar antenna case.

Keywords

antenna theory; computational electromagnetics; dipole antennas; electromagnetic fields; finite difference time-domain analysis; FDTD method; Joule loss; antenna efficiency calculation; complex geometries; dissipated power; electromagnetic field modeling; electromagnetic problem analysis; finite difference time domain method; input power; planar antenna; planar dipole antenna; Conductivity; Conductors; Current distribution; Dipole antennas; Electromagnetic analysis; Electromagnetic modeling; Finite difference methods; Geometry; Planar arrays; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2005 IEEE

Print_ISBN

0-7803-8883-6

Type

conf

DOI

10.1109/APS.2005.1551958

Filename

1551958