Numerical Analysis of Monopole Multi-Sector Antenna with Dielectric Cylinder


IEICE TRANSACTIONS on Communications   Vol.E95-B    No.9    pp.2991-2994
Publication Date: 2012/09/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E95.B.2991
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Antennas and Propagation
millimeter-wave band,  lens antenna,  multi-sector antenna,  quiescent elements,  

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This letter proposes a monopole multi-sector antenna with dielectric cylinder, and shows some results of simulations that examined the antenna characteristics. The dependency of radiation characteristics on relative permittivity εr shows the lens effect with increase of εr. Furthermore, the characteristics of the proposed antenna are improved by optimizing the termination conditions at the quiescent antennas. The backlobe level is lower than -10 dB. Also, the vertical HPBW and the conical HPBW are around 70.5° and 63.4°, respectively. The optimization improved the actual gain by 2 dB. It is found that the diameter of the proposed antenna is 1/3rd that of the conventional one.