Reconfigurable Antenna Parameters with the Change in the Position of Switches
Shafqat Hussain, Muhammad Usman Ali Khan, Muhammad Rizwan Anjum, M.A Hayat
Electronic Devices, Vol. 5, No. 2, 2016.
DOI: 
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Abstract:
In this paper the reconfigurable dual band micro strip patch antenna with resonant frequencies 1102MHz and
912MHz is analyzed with the change in position of internal two switches which are connecting the four antenna patches. It
is showed that reconfigurable antenna changes the basic parameters with the change in the position of the switches which
are being used to connect the antenna structure. A micro strip patch antenna of dimension (width 100mm, length 100mm and
height 30.4mm) is designed. The dual frequency band reconfigurable antenna is achieved by using two copper tapes for
connecting the antenna internal elements. The reconfigurable antenna consists of a FR4 substrate containing the four
copper annealed patches which are connected by two copper switches. The software CST MW studio is used for simulation.
The results show the variation of the re-configurability of the antenna with the change of position of the internal switches of
the reconfigurable antenna The change in the antenna parameters like Return loss, resonant frequency, bandwidth and
directivity are described for both frequency bands. With the change in the position of the switches of reconfigurable antenna
the return loss is improved, resonant frequency is being changed, Bandwidth of the antenna is changed and the radiation
pattern remains same. The idea to change the basic parameters of the reconfigurable antenna by only changing the position
of the reconfigurable antenna switches can provide another simple approach to make an antenna reconfigurable in frequency
agility. The future work for researchers is recommended to use diode switches in the place of copper tapes. The position of the
switches is changed simultaneously and some more results can be extracted while changing the position of one switch and
keeping the position of second switch fixed.