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

fYear

2011

fDate

14-15 Nov. 2011

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/LAPC.2011.6114114

Filename

6114114