Bandwidth Enhancement of Internal Antenna by Using Reactive Loading for Penta-Band Mobile Handset Application

Author

Peng, Chia-Mei ; Chen, I-Fong ; Hung, Ching-Chih ; Shen, Su-Mei ; Chien, Chia-Te ; Tseng, Chih-Cheng

Author_Institution

Dept. of Electron. Eng., Jinwen Univ. of Sci. & Technol., Taipei, Taiwan

Volume

59

Issue

5

fYear

2011

fDate

5/1/2011 12:00:00 AM

Firstpage

1728

Lastpage

1733

Abstract

A metal-wire-cutting bended monopole antenna (BMA) fed by mini-coaxial cable jointly with a thin printed ground-line which protrudes from ground-plane to be a balance-feed structure for bandwidth enhancement is proposed. A prototype of the proposed antenna with 40 mm in length, 6 mm in height and 5 mm in width has been fabricated and experimentally investigated. The human´s hand effect on impedance bandwidth and radiation characteristics of the proposed antenna is studied. A prototype is designed to cover penta-band: CDMA (824-894 MHz), GSM (880-960 MHz), DCS (1710-1880 MHz), PCS (1850-1990 MHz) and WCDMA (1920-2170 MHz). Experimental results are shown to verify the validity of theoretical work.

Keywords

UHF antennas; antenna feeds; mobile antennas; mobile handsets; monopole antennas; wire antennas; CDMA; DCS; GSM; PCS; WCDMA; balance-feed structure; bandwidth enhancement; frequency 1710 MHz to 1880 MHz; frequency 1850 MHz to 1990 MHz; frequency 1920 MHz to 2170 MHz; frequency 824 MHz to 894 MHz; frequency 880 MHz to 960 MHz; ground-plane; human hand effect; impedance bandwidth; internal antenna; metal-wire-cutting bended monopole antenna; minicoaxial cable; pentaband mobile handset; radiation characteristics; reactive loading; size 40 mm; size 5 mm; size 6 mm; thin printed ground-line; Antenna measurements; Antenna radiation patterns; Bandwidth; Impedance; Mobile antennas; Mobile handsets; Balance-feed structure; CDMA; DCS; GSM; PCS; WCDMA;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2011.2122232

Filename

5722977