Title :
Effect of groundplane size on radiation efficiency and bandwidth of dual-band U-PIFA
Author_Institution :
Inst. of Electron., Tampere Univ. of Technol., Finland
Abstract :
During the recent years there has been a surge interest on planar inverted-F antennas (PIFAs) for cellular phone and wireless local area network (WLAN) applications. Such antennas can be easily hidden within the housing of a cellular phone, PCMCIA card, etc. A common fact for these devices is their size limitations and usually a groundplane is the largest part of an antenna. Therefore, it is interesting to study the effects of groundplane size on various radiation and circuit parameters of the antenna. This paper presents a study where impedance bandwidth with criterion VSWR<2, and radiation efficiency as a function of groundplane size is carried out for a dual-band U-PIFA focusing its optimization for WLAN and HiperLAN applications. Measured results are discussed in details and compared with simulations, which were carried out with IE3D from Zeland software.
Keywords :
antenna theory; multifrequency antennas; wireless LAN; 2.4 GHz; 5.2 GHz; HiperLAN; PCMCIA card; WLAN; cellular phones; dual-band U-PIFA; impedance bandwidth; planar inverted-F antennas; radiation efficiency groundplane size effects; wireless local area network; Antenna accessories; Antenna measurements; Application software; Bandwidth; Cellular phones; Circuits; Dual band; Impedance; Surges; Wireless LAN;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1219791
