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Circularly Polarized Hybrid Dielectric Resonator Antennas: A Brief Review and Perspective Analysis
Rajasekhar Nalanagula1, Naresh K Darimireddy2, Runa Kumari1
1Department of Electrical and Electronics Engineering, BITS-Pilani, Hyderabad 500078, India.
Abstract:
Recently, it has been a feasible approach to build an antenna, in view of the potential advantages they offer. One of the recent trends in dielectric resonator antenna research is the use of compound and hybrid structures. Several considerable investigations have been already underway showing quite interesting and significant features in bandwidth, gain, and generation of circular polarization. A critical review on a journey of circularly polarized hybrid dielectric resonator antennas is presented in this article. A general discussion of circular polarization and DR antennas are provided at the forefront. Evolution, significant challenges, and future aspects with new ideas in designing hybrid dielectric resonator antennas are indicated at the end of the review. State-of-the-art advances and associated design challenges of circularly polarized hybrid DR antennas and related empirical formulas used to find resonance frequency of different hybrid modes produced are discussed in this paper.
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