A New and Wideband Circularly Polarized Antenna using CRLH-TL and CDRA Loading for S and C-band Applications

In this paper, a new idea is introduced for the first time to enhance the bandwidth of compact antenna by using the combination of composite right/left-handed (CRLH) transmission line (TL) and cylindrical dielectric resonator (CDR) loading. The proposed antenna design starts with a narrow-band CRLH-TL loaded antenna and wider bandwidth and circular polarization radiation is obtained due to the loading of a CDR. The antenna provides a compact dimension of 0.22λ
0
× 0.22λ
0
× 0.10λ
0
at the first resonance 2.69 GHz. The fabricated DR loaded compact antenna offers a wider IBW of 99.6% with axial ratio bandwidth of 15.27%.