Summary
International Symposium on Antennas and Propagation
2010
Session Number:2WD1
Session:
Number:2WD1-3
Radiated Immunity Test System for Vehicles Using a Composited Dipole Antenna
Akihiko KOMATSUZAKI, Hiroyuki ARAI, Toshiyasu TANAKA,
pp.-
Publication Date:2010/11/23
Online ISSN:2188-5079
Summary:
The radiated immunity test is one of the important EMC test systems to radiate the intense electromagnetic wave to the electronic device under test in the anechoic chamber and test its resistance characteristics from interfering wave [1]. This test system for vehicles requests antennas to radiate the intense electric field of the components of horizontal and vertical polarized wave. Though vertical polarized wave can be excited easily, the horizontal polarized wave is seriously affected by the reflected wave from the ground. It is necessary to increase the radiated electric fields for both components. The antenna also requests to have wideband characteristics because the system measures automatically the resistance characteristics of device under test from interfering in wide range frequencies. Generically, this system uses a log-periodic antenna [2] more than 100 MHz, and a Biconical antenna [2] less than 100 MHz. However, the Biconical antenna becomes very large to use at low frequency range. This paper presents a small and wideband antenna using a composited dipole antenna to operate from 20 MHz to 100 MHz and also demonstrates that the antenna radiate the intense electromagnetic wave over 100 V/m by changing the direction and position of the antenna. In the radiated immunity test system, as the influence of measurement environment such as an anechoic chamber should be taken into account, we also present that the proposed test system is suitable for the immunity test by the simulation including the measurement environment.