Quad-Band Internal Mobile Phone Antenna
Authors:
- Richard J. LangleyRLRichard J. Langley
- 9 July 2007
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 55 (7) , 2097-2103
Abstract
A novel internal, quad-band antenna placed inside a "foldable" type of mobile phone is presented. Its structure consists of a helical and a monopole element exciting two broad frequency bands. Using a simple matching circuit the proposed antenna covers several frequency bands including the global system for mobile communication (890-960 MHz), digital communication system (1710-1880 MHz), personal communication system (1850-1990 MHz), and universal mobile telecommunication system (1920-2170 MHz). It achieves a voltage standing wave ratio (VSWR) of less than three across all frequency bands with total radiation efficiency of more than 50%. Its novel design and structure occupies only 1.8 cm3 of volume making this antenna very small and very suitable for internal use inside mobile terminals.Keywords
This publication has 12 references indexed in Scilit:
- A compact internal tri-band antenna for mobile handsets2005
- Impedance, bandwidth, and Q of antennasIEEE Transactions on Antennas and Propagation, 2005
- Miniature Built-In Multiband Antennas for Mobile HandsetsIEEE Transactions on Antennas and Propagation, 2004
- The Radiation Properties of Electrically Small Folded Spherical Helix AntennasIEEE Transactions on Antennas and Propagation, 2004
- Design of an internal quad-band antenna for mobile phonesIEEE Microwave and Wireless Components Letters, 2004
- Small broadband stacked planar monopoleMicrowave and Optical Technology Letters, 2000
- A miniature monopole antenna for mobile communicationsMicrowave and Optical Technology Letters, 2000
- Wide-band planar monopole antennasIEEE Transactions on Antennas and Propagation, 1998
- Matching the input impedance of a broadband disc monopoleElectronics Letters, 1993
- Comparison of three methods for the measurement of printed antenna efficiencyIEEE Transactions on Antennas and Propagation, 1988