A compact reconfigurable antenna with frequency, polarization and pattern diversity

Ch. Sulakshana and L. Anjaneyulu

Journal of Electromagnetic Waves and Applications, 2015, vol. 29, issue 15, 1953-1964

Abstract: This paper presents a novel, compact and simple reconfigurable antenna using coplanar waveguide feed which has frequency, polarization and pattern diversities. The basic antenna consists of four rectangular patches of dimensions 5 mm × 4 mm. Three switches are used to connect these four patches and with different switching modes, the desired reconfigurability is achieved. The operating frequency/band can be selected as 5.15 GHz (with 33.6% of impedance bandwidth) or 5.55 GHz (with 55% of impedance bandwidth) in two different operating modes. Reconfiguration in polarization takes place from linear polarization to right hand circular polarization and left hand circular polarization, and antenna is capable of rotating its radiation beam by ±180°. The measured results are in good agreement with simulated ones. The antenna exhibits good return loss characteristics, acceptable gain and VSWR.

Date: 2015
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DOI: 10.1080/09205071.2015.1068229

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