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Reducing the height of a circular array of monopoles using top hats and dielectric coatings
Author(s) -
Janapsatya Januar,
Bialkowski Marek E.
Publication year - 2004
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/2002rs002774
Subject(s) - magnetic monopole , dielectric , bandwidth (computing) , reduction (mathematics) , impedance matching , dipole antenna , coating , optics , electrical impedance , materials science , acoustics , physics , electrical engineering , computer science , optoelectronics , geometry , telecommunications , engineering , antenna (radio) , composite material , mathematics , quantum mechanics
Using a Radial Guide Field Matching Method, an investigation is performed into reducing the height of an electronically steered circular array of monopole antennas composed of a central active element surrounded by passive elements being either short‐ or open‐circuited. It is shown that a considerable height reduction can be achieved using top hats attached to monopoles ends and by applying dielectric coating underneath the top hats. The trade‐off in achieving height reduction is narrower impedance bandwidth.