Title :
A compact internal tri-band antenna for mobile handsets
Author :
Tzortzakakis, Michail ; Langley, R.J.
Author_Institution :
Eur. Technol. Center, Matsushita Electron. Components Eur. GmbH, Lueneburg, Germany
Abstract :
A compact and low profile internal antenna capable of operating in multiple bands is proposed. It consists of a long monopole ring, which is top-loaded by a helical element in order to produce two main resonances of wide bandwidth. Its compact size of length 10 mm, width 28 mm and height of 6 mm and small volume of 1.68 cm3, makes it possible to be used internally, inside the mobile phone. With the help of a small matching circuit a VSWR < 3 is achieved covering the bands of GSM900 (880-960 MHz), DCS (1710-1880 MHz) and PCS (1850-1990 MHz). The efficiency is above 50% in all bands. The specific absorption rate (SAR) is also measured, presented and discussed in this paper.
Keywords :
UHF antennas; mobile handsets; multifrequency antennas; 1.71 to 1.88 GHz; 1.85 to 1.99 GHz; 10 mm; 28 mm; 6 mm; 880 to 960 MHz; compact internal tri-band antenna; helical antennas; matching circuit; mobile handsets; mobile phone antennas; monopole antennas; monopole ring; multi-band antennas; specific absorption rate; Antenna feeds; Antenna measurements; Bandwidth; Distributed control; Helical antennas; Integrated circuit technology; Mobile antennas; Mobile handsets; Personal communication networks; Specific absorption rate;
Conference_Titel :
Antenna Theory and Techniques, 2005. 5th International Conference on
Print_ISBN :
0-7803-9261-2
DOI :
10.1109/ICATT.2005.1496969
