Title :
Frequency-Tunable Planar Monopole Antenna for Mobile Terminals
Author :
Palukuru, Vamsi K. ; Komulainen, M. ; Berg, Markus ; Jantunen, H. ; Salonen, E.
Author_Institution :
Microelectron. & Mater. Phys. Labs. & EMPART Res. Group of Infotech Oulu, Oulu Univ., Oulu
Abstract :
A frequency tunable planar monopole antenna for mobile terminal applications is presented. The operating frequency of the antenna is electrically switched from the DCS (1710-1880 MHz) to the WLAN (2400-2484 MHz) bands. This is done by using a RF pin diode switch situated in the middle of the antenna. The size of the antenna is 14 x 15 mm2, and it covers both bands with over 60 % total antenna efficiency margin. The impact of tuning on the resonant frequency of the antennas, total antenna efficiency and radiation pattern are experimentally studied and compared with reference antennas that have no tuning circuit.
Keywords :
UHF antennas; antenna radiation patterns; mobile antennas; monopole antennas; p-i-n diodes; planar antennas; tuning; wireless LAN; DCS band; RF pin diode switch; WLAN band; antenna efficiency margin; frequency 1710 MHz to 1880 MHz; frequency 2400 MHz to 2484 MHz; frequency-tunable planar monopole antenna; mobile terminals; radiation pattern; resonant frequency tuning; Planar monopole antenna; RF switch; frequency reconfiguration; mobile phone antennas;
Conference_Titel :
Antennas and Propagation, 2007. EuCAP 2007. The Second European Conference on
Conference_Location :
Edinburgh
Print_ISBN :
978-0-86341-842-6
