Tests on a 3 GHz ground plane Yagi

Author

Eskelinen, P. ; Engelberg, J.

Author_Institution

Res. Lab., Kotka Inst. of Technol., Finland

Volume

11

Issue

2

fYear

1996

fDate

2/1/1996 12:00:00 AM

Firstpage

37

Lastpage

40

Abstract

Classical dimensioning of a ground plane Yagi antenna for 3 GHz leads to a gain which is 2-3 dB less than predicted, but this can be overcome to some extent by additional directors. The impedance matching strongly depends on the size of the reflector, which should be by a factor of 1.2 longer than given by classical theory. The shape and size of the ground plane itself can be varied considerably with little or no effect on either the radiation pattern or the impedance characteristics but, on the other hand, inaccurate mutual positioning of the individual elements has a drastic influence. Material conductivity is not of prime concern

Keywords

Yagi antenna arrays; antenna earths; antenna radiation patterns; antenna testing; directive antennas; impedance matching; microstrip antenna arrays; monopole antenna arrays; 3 GHz; additional directors; azimuth pattern; classical dimensioning; elevation pattern; gain; ground plane Yagi antenna; impedance matching; mutual positioning; prototypes; radiation pattern; reflector size; scale model tests; Antenna radiation patterns; Conducting materials; Conductivity; Frequency; Impedance matching; Polarization; Prototypes; Shape; Testing; Yagi-Uda antennas;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems Magazine, IEEE

Publisher

ieee

ISSN

0885-8985

Type

jour

DOI

10.1109/62.484304

Filename

484304