تطوير هوائي ESPRAR-8 عريض المجال الترددي و تقويمه

Abstract EN

This paper presents the development and evaluation of BroadBand Electrically Steerable Parasitic Array Radiator antenna by using eight parasitic radiators BB-ESPAR-8 .

The antenna has a symmetrical structure that consists of: i- one active element as a broad band shuttle antenna, ii- eight wideband parasitic radiators, iii- cylindrical ground plane, iv- set of reactances.

The active one is fixed at the center of cylindrical ground, and the parasitics are fixed at a circle around the active one and connected to the reactances.

The design of BB-ESPAR-8 was done by using the modelling software Computer Simulation Technology CST to work in the frequency bandwidth [500-700] MHz.

Simulation results showed that the BB-ESPAR-8 antenna has a VSWR less then 3.1:1 in the frequency bandwidth [500-700] MHz, and has the same radiation pattern for all frequencies in the band by connecting the same set of reactances to the parasitic radiators.

A signal model of the BB-ESPAR-8 was formulated in order to use it in a direction of arrival algorithm.