A method of pattern measurement to cancel reflection waves in anechoic chamber

Author

Nagatoshi, Mio ; Hirose, Masanobu ; Tanaka, Hiroki ; Kurokawa, Satoru ; Morishita, Hisashi

Author_Institution

Nat. Defense Acad., Yokosuka

fYear

2008

fDate

5-11 July 2008

Firstpage

1

Lastpage

4

Abstract

In the paper, we have shown that averaging the radiation patterns over several distances between two antennas is useful in order to reduce the influence of reflection waves, using simulation software FEKO. In the conditions with and without reflection waves we simulate the radiation patterns of the biconical antenna (the operation band is from 30 MHz to 300 MHz) in distance between antennas from 315 cm to 615 cm by 50 cm steps. Averaging the radiation patterns is useful for reducing the influence of the reflection waves in an anechoic chamber. We will apply the proposed method to various antennas, and determine the optimum averaging number, distance, and steps.

Keywords

UHF antennas; VHF antennas; anechoic chambers (electromagnetic); antenna radiation patterns; conical antennas; electromagnetic wave reflection; FEKO simulation software; anechoic chamber; biconical antenna; distance 315 cm to 615 cm; distance 50 cm; frequency 30 MHz to 300 MHz; pattern measurement; radiation patterns; reflection waves cancelleation; Anechoic chambers; Antenna measurements; Antenna radiation patterns; Conducting materials; Defense industry; Fourier transforms; Length measurement; Optical reflection; Reflector antennas; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE

Conference_Location

San Diego, CA

Print_ISBN

978-1-4244-2041-4

Electronic_ISBN

978-1-4244-2042-1

Type

conf

DOI

10.1109/APS.2008.4619826

Filename

4619826