Wideband circularly polarized dielectric resonator antenna coupled with meandered-line inductor for ISM/WLAN applications

摘要

A new meandered-line inductor fed wideband circularly polarized rectangular dielectric resonator antennarn(DRA) with partial ground plane has been developed in this work. Meandered-line inductor feed and partialrnground plane are used for generation of orthogonal modes, hence circular polarization (CP) in DRA. Byrncontrolling the length of meandered-line inductor, three different CP DRA have been designed for differentrnwireless applications such as Wi-MAX and WLAN/ISM 2400 band. Distribution of electric field insidernrectangular DRA shows that all three antenna having TE_(11δ) mode. Finally, a lower frequency bandrnapplication at 2.4 GHz (ISM) called here as Proposed Antenna, has been considered for fabrication. Thisrndesigned antenna shows measured −10 dB input impedance bandwidth of 20.67% and 3-dB axial ratiornbandwidth of 27.95% in broadside direction. All these three CP antennas (Antenna-1 to ProposedrnAntenna) are showing stable gain and right hand circular polarization in broadside direction.