A 9 slots antenna designed by Chebyshev technique and modeled by Finite Difference Time Domain

Abstract

Slot antennas are widely used devices in microwave communications, especially when they are used as arrays, one of its applications are as WiFi antennas. We present the analysis of a slot antenna using the Finite Difference Time Domain Method (FDTD). The FDTD method is an easy way to analyze complex structures; the theoretical analysis of a slot antenna supposes the slots are impressed over an infinite plane, missing the effect of the scattered fields in the waveguide sides, as the FDTD simulates the electromagnetic field, considering the media characteristics point by point, is possible to see its behavior in a more exactly way. The application example is a 9 element resonant array designed using the Chebyshev technique to reduce side lobes, antenna behavior was analyzed and then constructed; the results show a good agreement between both, simulation and experiment.

A novel substrate integrated waveguide slot antenna with high power-handling capacity

“…In order to obtain the distance d, equivalent conductance of N slots is considered to get good adaptation [4] using the following equation. The electric field distribution of the two kinds of slot antennas is simulated and the result is shown in Fig.…”

Planar Antennas for Satellite Communications

“…The situation has changed radically since the arrival of personal computers and mainly the permanent improvement of their characteristics, making them a powerful tool for analysis of electromagnetic problems; on the other hand, the use of mathematical models had become in the development of specialized software tools widely used nowadays in the field of planar antenna analysis and design. Although the appearance of many commercial tools is a common situation every day, many researchers use their own programs; authors have been working since some years ago in development of their own software, applying it to antenna and microstrip devices (Barrera-Figueroa et al, 2007;Sosa-Pedroza et al, 2008; considering both, saving economical resources and "learning doing" mainly for academic reasons. Most of the actual work on antenna computational methods is based on solution of Maxwell Equations in integral or differential form, Method of Moments is an example and maybe the most applied for integral Methods and Finite Elements (FE) and Finite Difference on Time Domain (FDTD) for differential methods.…”