A new directional antenna for ISM applications

Author

Liu, Duixian

Author_Institution

IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA

Volume

2

fYear

1997

fDate

4-7 May 1997

Firstpage

1196

Abstract

The design and analysis of a new directional antenna is presented. This antenna can be used in a hand-held device or instruments requiring an antenna radiating in a particular direction. The antenna has a small size, and can be built on a single or double sided printed circuit board. It can also be built as a on-board antenna to reduce manufacturing cost. The antenna presented consists of two dipoles. The two dipoles are placed in parallel and very close to each other. The antenna has a radiation pattern very similar to that of a two element Yagi antenna having one driven element and one director, a front-to-back ratio more than 10 dB, and a gain more than 3 dBd. No matching network is required since the antenna is designed for a 50 ohms input impedance at the center frequency of a band. The method of moments, particularly, the reaction technique, is used for the analysis

Keywords

antenna radiation patterns; dipole antenna arrays; directive antennas; electric impedance; method of moments; microstrip antenna arrays; 3 dB; ISM applications; directional antenna; front-to-back ratio; gain; hand-held device; input impedance; instruments scientific and medical; manufacturing cost; method of moments; on-board antenna; printed circuit board; radiation patter; reaction technique; twin dipole antenna; Antenna radiation patterns; Costs; Dipole antennas; Directional antennas; Directive antennas; Gain; Instruments; Manufacturing; Printed circuits; Yagi-Uda antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1997, IEEE 47th

Conference_Location

Phoenix, AZ

ISSN

1090-3038

Print_ISBN

0-7803-3659-3

Type

conf

DOI

10.1109/VETEC.1997.600520

Filename

600520