Quad-band Antenna for a Foldable Mobile Phone

Author

Tzortzakakis, Michail ; Langley, Richard J.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. of Sheffield

fYear

2006

fDate

10-12 Sept. 2006

Firstpage

281

Lastpage

284

Abstract

In this paper a novel antenna is shown, which uses a combination of helical and monopole elements in order to produce, with the help of a matching circuit, two very wide in bandwidth frequency responses, achieving the coverage of four mobile phone frequency bands, GSM850 (824-894 MHz), E-GSM (880-960 MHz), DCS (1710-1880 MHz), PCS (1850-1990 MHz). Due to its novel design, this antenna has a small size resulting to a compact volume, making it possible to be used inside a mobile phone thus making it invisible to the user. Various simulations and measurements are shown, when the antenna is placed on the bottom side of a ´clamshell´ type mobile phone, achieving a voltage standing wave ratio (VSWR) of less than 3 and a radiation efficiency of more than 50%, across all frequency bands

Keywords

antenna radiation patterns; frequency response; mobile antennas; mobile handsets; monopole antennas; multifrequency antennas; bandwidth frequency response; clamshell type mobile phone; foldable mobile phone; matching circuit; monopole element; quadband antenna; Antenna measurements; Bandwidth; Circuits; Distributed control; Frequency measurement; Helical antennas; Mobile antennas; Mobile handsets; Personal communication networks; Voltage; antennas; mobile phone antennas; multi-band antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Technology, 2006. The 9th European Conference on

Conference_Location

Manchester

Print_ISBN

2-9600551-5-2

Type

conf

DOI

10.1109/ECWT.2006.280491

Filename

4057494