Title :
Small printed inverted-L monopole antenna for worldwide interoperability for microwave access wideband operation
Author :
Ni, W. ; Nakajima, Naoki
Author_Institution :
Dept. of Human Commun., Univ. of Electro-Commun., Chofu, Japan
fDate :
11/1/2010 12:00:00 AM
Abstract :
A small-size printed inverted-L monopole wideband antenna for mobile application is presented. The antenna is simply structured with an L-strip, which occupies a small area of 10×14 mm2 on the top portion of the substrate. A simple matching circuit using lumped elements is used to introduce two resonance frequencies and to further enhance the bandwidth. The proposed antenna achieves a 10 dB impedance bandwidth from 2.23 GHz to more than 4 GHz, which can cover the WLAN2400 and WiMAX2300/2500/3500 operation bands, and omnidirectional radiation patterns were obtained. It is suitable for application to a mobile phone with its relatively low profile.
Keywords :
UHF antennas; WiMax; antenna radiation patterns; microstrip antennas; microwave antennas; mobile radio; monopole antennas; multifrequency antennas; strip lines; wireless LAN; WLAN2400; WiMAX2300 operation bands; WiMAX2500 operation bands; WiMAX3500 operation bands; bandwidth 2.23 GHz to 4 GHz; microwave access wideband operation; mobile phone; omnidirectional radiation patterns; small printed inverted-L monopole antenna; worldwide interoperability;
Journal_Title :
Microwaves, Antennas & Propagation, IET
DOI :
10.1049/iet-map.2009.0469
