Title :
A capacitively loaded antenna for use in mobile handsets
Author :
Elfergani, I.T.E. ; Abd-Alhameed, R.A. ; See, C.H. ; Child, M.B. ; Excell, P.S.
Author_Institution :
Mobile & Satellite Commun. Res. Centre, Univ. of Bradford, Bradford, UK
Abstract :
A tuneable slotted patch antenna design is presented and verified for use in the DCS, PCS and UMTS bands. The tuning circuit consists of two varactor diodes, with some passive components, and is integrated fully with the radiator patch, with the varactors occupying different locations over the slot. The tuning does not require any further modification to the patch or feed geometry. Good agreement is observed between the predicted and observed impedance bandwidth, return loss, gain and radiation pattern, throughout the range 1.70 GHz-2.05 GHz.
Keywords :
UHF antennas; antenna feeds; antenna radiation patterns; circuit tuning; microstrip antennas; mobile antennas; mobile handsets; multifrequency antennas; slot antennas; varactors; DCS band; PCS band; UMTS band; capacitively loaded antenna; feed geometry; impedance bandwidth; mobile handset; radiation pattern; radiator patch; tuneable slotted patch antenna design; tuning circuit; varactor diode; Antenna measurements; Antenna radiation patterns; Loaded antennas; Tuning; Varactors; reconfigurable antennas; slot patch antennas; varactor diode;
Conference_Titel :
Antennas and Propagation Conference (LAPC), 2010 Loughborough
Conference_Location :
Loughborough
Print_ISBN :
978-1-4244-7304-5
DOI :
10.1109/LAPC.2010.5666208
