The Analysis Of Microstrip Antennas Using
The FDTD Method
Author(s)
M. Wnuk, G. Różański & M. Bugaj
Abstract
The object of this article is to demonstrate the use of the FDTD method in
analyzing planar antennas. Yee’s cell as a basic element of the characteristic of
the field in the FDTD method and Yee’s algorithm are presented. The question
of source modeling and stimulation of antenna, boundary conditions and method
of analysis of planar antennas’ structure are also discussed. Some results of the
use of this method have also been presented, as a confirmation of its accuracy
and usefulness in the analysis of planar antennas.
1 Introduction
Microstrip antennas have been one of the most innovative fields of antenna
techniques in the last fifteen years. The main advantages of these antennas are:
simplicity of production, small weight, narrow section, and easiness of
integration of radiators with feeding system. The basic disadvantages are: narrow
band, limited power capacity and insufficient efficiency of radiation. The basic
configuration of microstrip antenna consists of a metallic strip printed on a thin,
earthed dielectric base. The feeding is realized through concentric cable, run
perpendicularly through substrate or strip line run on a substrate in the plane of
the aerial.
The methods of analysis and projection of microstrip antennas have
developed simultaneously with the development of aerials. Nowadays, several
methods of analysis of antennas on dielectric surface are being used. However,
the most commonly used method is fullwave model that is based on Green
function and moment method, where analysis relies on the solution of integral
equation, concerning electric field, with regard to unknown currents flowing
through elements of antenna and its feeding system.
Keywords
Related Book
Other papers in this volume
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