Internal Patch Antenna With a Thin Air-Layer Substrate for GSM/DCS Operation in a PDA Phone

Author

Kin-Lu Wong ; Yuan-Chih Lin ; Brian Chen

Author_Institution

Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung

Volume

55

Issue

4

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

1165

Lastpage

1172

Abstract

A thin dual-band internal patch antenna for Global System for Mobile Communication, 890-960 MHz/Digital Communication System, 1710-1880 MHz (GSM/DCS) operation in a Personal Digital Assistant (PDA) phone is presented. The antenna can generate two wide resonant modes for GSM (890-960 MHz) and DCS (1710-1880 MHz) operation, yet it requires an air-layer substrate of thickness 4 mm only, which is among the thinnest internal mobile phone antennas that have been reported. The antenna´s top patch comprises a resonant narrow strip supporting a longer resonant path for GSM operation and a resonant subpatch supporting a shorter resonant path for DCS operation. By including a suitable widened end portion for the narrow strip and a suitable tapered end portion for the subpatch, increased bandwidths for the proposed thin internal mobile phone antenna are obtained. Detailed design considerations of the proposed antenna are described. In addition, the user´s hand effects on the performances of the proposed antenna are studied

Keywords

UHF antennas; cellular radio; digital communication; microstrip antennas; mobile antennas; mobile handsets; multifrequency antennas; notebook computers; 1710 to 1880 MHz; 4 mm; 890 to 960 MHz; GSM-DCS operation; PDA phone; digital communication system; dual-band internal patch antenna; global system-mobile communication; internal mobile phone antenna; personal digital assistant; resonant narrow strip; resonant subpatch; thin air-layer substrate; Bandwidth; Digital communication; Distributed control; Dual band; GSM; Mobile antennas; Mobile handsets; Patch antennas; Personal digital assistants; Resonance; GSM/DCS mobile phone antennas; internal antennas; internal mobile phone antennas; mobile antennas;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2007.893379

Filename

4148088