Design of small and broad-band internal antennas for IMT-2000 mobile handsets

Author

Wang, Ya Jun ; Lee, Ching Kwang ; Koh, Wee Jin ; Gan, Yeow Beng

Author_Institution

Electromagn. Compatibility Group, Defense Sci. Organ. Nat. Labs., Singapore

Volume

49

Issue

8

fYear

2001

fDate

8/1/2001 12:00:00 AM

Firstpage

1398

Lastpage

1403

Abstract

The objective of this paper is to design some small broad-band internal antennas for third-generation International Mobile Telecommunications-2000 (IMT-2000) mobile handsets. By introducing substrates of low dielectric constants and electromagnetically coupling two shorted microstrip patch elements, of either rectangular or semidisc shape, both compactness and broad bandwidth can be achieved. These novel internal antennas for IMT-2000 mobile handsets incorporate only one single probe feed in a driven patch element, white the broad-band feature is obtained by realizing dual-frequency operation. The typical impedance behavior and far-field radiation pattern characteristics of eight different antenna configurations are discussed theoretically and experimentally

Keywords

antenna radiation patterns; cellular radio; microstrip antennas; mobile antennas; multifrequency antennas; telephone sets; IMT-2000 mobile handset; dielectric substrate; dual-frequency operation; electromagnetic coupling; far-field radiation pattern; input impedance; microstrip patch element; single probe feed; small broadband internal antenna; third-generation cellular system; Antenna feeds; Bandwidth; Dielectric constant; Dielectric substrates; Electromagnetic coupling; Microstrip; Mobile antennas; Mobile handsets; Probes; Shape;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.939919

Filename

939919