Title :
Reconfigurable antenna design approach for mobile applications and a technique for harmonics suppression
Author :
Elfergani, I.T.E. ; Abd-Alhameed, R.A. ; See, C.H. ; Sadeghpour, T. ; Jones, S.M.R.
Author_Institution :
Mobile & Satellite Commun. Res. Centre, Univ. of Bradford, Bradford, UK
Abstract :
A design procedure for reconfigurable mobile antenna module is presented. A tuneable antenna, including a varactor diode placed at specific position over the radiating slot, was fabricated and tested over several targeted frequency bands (centred at 1.7, 1.8, 1.9 and 2.04 GHz) and their harmonics. A limitation of the tuneable antenna is its non-linear behaviour at the transmitter. A method to measure the radiated power from an active antenna (AA) at fundamental and harmonic frequencies is introduced to suppress the harmonic radiations of the active antenna. The experimental results on the received power show a very good capability for harmonic suppression.
Keywords :
UHF antennas; active antennas; antenna radiation patterns; mobile antennas; mobile radio; multifrequency antennas; radio transmitters; slot antennas; software radio; varactors; active antenna; frequency 1.7 GHz to 2.04 GHz; harmonic radiation suppression; nonlinear behaviour; radiating slot; reconfigurable mobile antenna module design; transmitter; tuneable antenna; varactor diode; Antenna measurements; Harmonic analysis; Microstrip antennas; Power harmonic filters; Varactors;
Conference_Titel :
Antennas and Propagation Conference (LAPC), 2011 Loughborough
Conference_Location :
Loughborough
Print_ISBN :
978-1-4577-1014-8
Electronic_ISBN :
978-1-4577-1015-5
DOI :
10.1109/LAPC.2011.6114114
