Triple-Bands Broad Bandwidth Dipole Antenna with Multiple Parasitic Elements

Toru FUKASAWA  Hiroyuki OHMINE  Kazuhito MIYASHITA  Yoshiyuki CHATANI  

Publication
IEICE TRANSACTIONS on Communications   Vol.E84-B   No.9   pp.2476-2481
Publication Date: 2001/09/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Innovation in Antennas and Propagation for Expanding Radio Systems)
Category: Mobile Antennas
Keyword: 
dipole antenna,  parasitic element,  triple-bands,  base station,  

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Summary: 
This paper proposes serially arranged two parasitic elements above a fed dipole to obtain broad bandwidth in resonant frequency of a parasitic element. The above antenna can be used in triple-bands with one feed point. Its design method using FDTD is also presented. Next, application of the triple-bands antenna is proposed for 3-sector base station antenna. Its characteristics of return loss and radiation patterns are indicated. Calculated values are in good agreement with measured ones.