2 GHz electromagnetic crystal reflector antenna

Author

Kim, D. ; Kim, M. ; Xin, H. ; Hacker, J.

Author_Institution

Sch. of Electr. Eng., Korea Univ., Seoul, South Korea

Volume

39

Issue

15

fYear

2003

fDate

7/24/2003 12:00:00 AM

Firstpage

1096

Lastpage

1098

Abstract

The radiation pattern of a monopole antenna with a small electromagnetic crystal (EMXT) reflector was investigated. High frequency structure simulations predict a considerable amount of near-field shielding with undisturbed antenna impedance matching when a perfect magnetic conductor reflector is positioned near the monopole. The pattern distortion created by the reflector gradually decreases, reaching a minimum in the far field. Experimental results show the monopole with an EMXT reflector, λ₀/4×λ₀/2 in size, produces a radiation pattern with a front-to-back ratio of 10.8 and 5.7 dB in the near and far fields, respectively.

Keywords

UHF antennas; antenna radiation patterns; electromagnetic shielding; impedance matching; monopole antennas; reflector antennas; 2 GHz; electromagnetic crystal reflector antenna; far field; front-to-back ratio; high frequency structure simulations; monopole antenna; near fields; near-field shielding; pattern distortion; perfect magnetic conductor reflector; radiation pattern; undisturbed antenna impedance matching;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:20030731

Filename

1222666