Omnidirectional Linearly and Circularly Polarized Rectangular Dielectric Resonator Antennas | IEEE Journals & Magazine | IEEE Xplore

Omnidirectional Linearly and Circularly Polarized Rectangular Dielectric Resonator Antennas


Abstract:

The rectangular dielectric resonator antenna (DRA) centrally fed by a probe is investigated. Its operating mode is analogous to the TM011 mode of a cylindrical DRA. The D...Show More

Abstract:

The rectangular dielectric resonator antenna (DRA) centrally fed by a probe is investigated. Its operating mode is analogous to the TM011 mode of a cylindrical DRA. The DRA radiates like an electric monopole, generating omnidirectional linearly polarized (LP) fields. Based on this LP design, a novel omnidirectional circularly polarized (CP) DRA is studied for the first time. Slots are introduced to the sidewalls of the DRA, exciting a degenerate mode for the generation of CP fields. To demonstrate the idea, an omnidirectional CP DRA was designed for WLAN (2.4-2.48 GHz) applications. The reflection coefficient, axial ratio (AR), radiation pattern, and antenna gain are studied, and reasonable agreement between the measured and simulated results is observed.
Published in: IEEE Transactions on Antennas and Propagation ( Volume: 60, Issue: 2, February 2012)
Page(s): 751 - 759
Date of Publication: 21 October 2011

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