Design of Hollow Cylindrical Dielectric Resonator Antenna Excited By Micro-strip Lines
نویسنده
چکیده
Objective of this study is to enhance radius of curvature of return loss, input impedance & explore SWR and radiation pattern. Hollow CDRA has been used instead of single-element CDRA to achieve the above mentioned goal. The impedance bandwidth of a high permittivity hollow cylindrical dielectric resonator antenna excited by micro-strip lines was significantly improved by modifying the feed geometry. The main idea of the present study is to upgrade the bandwidth of the dielectric resonator Antenna. A new hollow cylindrical dielectric antenna above the ground plain is proposed here. The matching bandwidth is 4.45-5.85 GHz and maximum radiation gain are 5.37 dB at 5.045GHz. The 10 dB return loss bandwidth enhance 12% to 27.75% (4.45-5.85GHz) without much affecting the gain and other radiation properties of antenna. The performance of the dielectric resonator antenna is simulated by electromagnetic simulator CST Microwave Studio. KeywordsDielectric Resonator Antenna (DRA), matching bandwidth, hollow cylindrical dielectric antenna (HCDRA), S11parameter and impedance bandwidth (IBW).
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