Improved bandwidth low-profile miniaturized multi-arm logarithmic spiral antenna
AuthorZhu, Shaozhen (Sharon)
Ghazaany, Tahereh S.
Abd-Alhameed, Raed A.
Jones, Steven M.R.
Noras, James M.
Van Buren, T.
KeywordVertical polarisation; Miniaturised antenna; Omni-directional antenna
A low-profile (λ/43) miniaturized multi-element antenna is presented, which displays vertical polarization with an omni-directional radiation pattern. The antenna uses a logarithmic spiral shape as the main radiating element such that the impedance bandwidth of the antenna is much improved in comparison with both a strip-line square spiral design and a strip-line circular spiral design. The antenna demonstrates stable gain and useful efficiency over the operating frequency band. Significantly, the antenna provides a low profile, omnidirectional pattern in the azimuth plane, polarizes normal to the ground-plane with a 1.2% bandwidth and 0.5 dBi gain.
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CitationZhu S, Ghazaany TS, Abd-Alhameed RA et al (2014) Improved bandwidth low-profile miniaturized multi-arm logarithmic spiral antenna. In: Proceedings of the 8th European Conference on Antennas and Propagation. 6-11 Apr 2014, The Hague, The Netherlands: 1918-1920.
Link to publisher’s versionhttps://doi.org/10.1109/EuCAP.2014.6902174
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