Omnidirectional Linearly and Circularly Polarized Rectangular Dielectric Resonator Antennas

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.

[1]  Kwai-Man Luk,et al.  Simple formula for analysing the centre-fed hemispherical dielectric resonator antenna , 1997 .

[2]  Kwai-Man Luk,et al.  Stacked annular ring dielectric resonator antenna excited by axi-symmetric coaxial probe , 1995 .

[3]  A. Okaya,et al.  The Dielectric Microwave Resonator , 1962, Proceedings of the IRE.

[4]  A. Ittipiboon,et al.  Theoretical and experimental investigations on rectangular dielectric resonator antennas , 1997 .

[5]  Kwok Wa Leung,et al.  Theory and experiment of circularly polarized dielectric resonator antenna with a parasitic patch , 2003 .

[6]  Nozomu Hasebe,et al.  A Circularly Polarized Omnidirectional Antenna , 1993 .

[7]  K. Luk,et al.  A wideband circularly polarized conical-beam patch antenna , 2006, IEEE Transactions on Antennas and Propagation.

[8]  R. Chair,et al.  Aperture fed wideband circularly polarized rectangular stair shaped dielectric resonator antenna , 2006, IEEE Transactions on Antennas and Propagation.

[9]  D. Guha,et al.  Comb-shaped circularly polarised dielectric resonator antenna , 2006 .

[10]  Kin‐Lu Wong,et al.  Cross-slot-coupled microstrip antenna and dielectric resonator antenna for circular polarization , 1999 .

[11]  Michel Cuhaci,et al.  Electric-monopole antenna using a dielectric ring resonator , 1993 .

[12]  H. A. Wheeler,et al.  A Helical Antenna for Circular Polarization , 1947, Proceedings of the IRE.

[13]  Prakash Bhartia,et al.  Dielectric resonator antennas—a review and general design relations for resonant frequency and bandwidth , 1994 .

[14]  J. M. Fernández,et al.  Omnidirectional circularly polarized slot antenna fed by a cylindrical waveguide in millimeter band , 2007 .

[15]  M. H. Neshati,et al.  Rigorous Analysis of Rectangular Dielectric Resonator Antenna With a Finite Ground Plane , 2008, IEEE Transactions on Antennas and Propagation.

[16]  Yahia M. M. Antar,et al.  Coplanar-waveguide-fed slot-coupled rectangular dielectric resonator antenna , 2002 .

[17]  Stuart A. Long,et al.  The resonant cylindrical dielectric cavity antenna , 1983 .

[18]  T. Denidni,et al.  Wideband Rectangular Dielectric Resonator Antenna With a Concave Ground Plane , 2009, IEEE Antennas and Wireless Propagation Letters.

[19]  Jeen-Sheen Row,et al.  Reconfigurable Circularly-Polarized Patch Antenna With Conical Beam , 2010, IEEE Transactions on Antennas and Propagation.

[20]  V. Galindo,et al.  A near-isotropic circulary polarized antenna for space vehicles , 1965 .

[21]  D. Kajfex,et al.  Dielectric Resonators , 1986 .