Lossy Ferrite Core-Dielectric Shell Structure for Miniature GHz Axial-Mode Helical Antenna

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A lossy ferrite core/dielectric shell structure effectively miniaturizes an axial-mode helical antenna (AM-HA) without sacrificing the antenna gain in the range of 2.85-3.45 GHz. Co(2)Z hexaferrite-glass composite was used as an inner core and acrylonitrile butadiene styrene as an outer shell. The volume of the AM-HA was reduced by 29% while maintaining realized gain of 9.0 dBic, compared to air-core AM-HA. The simulation also confirmed that further miniaturization of the AM-HA up to 43% is achievable with a slight decrease in realized gain from 9 to 8.7 dBic. The designed magnetic core/dielectric shell structure offers a vast selection of lossy ferrite for miniaturization of the AM-HA.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2019-05
Language
English
Article Type
Article
Citation

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, v.18, no.5, pp.951 - 955

ISSN
1536-1225
DOI
10.1109/LAWP.2019.2906505
URI
http://hdl.handle.net/10203/262265
Appears in Collection
EE-Journal Papers(저널논문)
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