A New Wideband Circularly Polarized Dielectric Resonator Antenna

作者：Khalily Mohsen^*; Kamarudin Muhammad Ramlee; Mokayef Mastaneh; Danesh Shadi; Ghahferokhi Sayed Ehsan Alavi

来源：Radioengineering, 2014, 23(1): 175-180.

• Dielectric Resonator Antenna (DRA)
• Circularly Polarized (CP)
• Axial Ratio (AR) bandwidth
• Coplanar Waveguide (CPW)-fed

A wideband and compact circularly polarized (CF) C-shaped dielectric resonator antenna (DRA) is presented and investigated. The proposed C-shaped DR is excited by a simple stripe line connected to a coplanar waveguide (CPW) feeding line. The C-shaped DRA is circularly polarized with 19% axial ratio (AR) bandwidth. It is found that the CF bandwidth can be expanded by using a narrow short circuit strip. The final design achieves CF with 50% AR bandwidth. The proposed circularly polarized DRA (CPDRA) with good radiation characteristics offers an impedance bandwidth of 58% between 3.45 and 6.26 GHz for VSWR <= 2. The proposed DRA is fabricated and tested. Very good agreement between simulated and measured results is obtained.

• 出版日期2014-4