AMC surface based on spiral strips and its applications for low-profile broadband planar antennas

A novel artificial magnetic conductor (AMC) surface based on spiral strips is proposed, which consists of 9 × 9 AMC cells. Each AMC cell includes a spiral strip to increase its inductance, thus featuring a wide bandwidth of 42% for ±90° reflection phase. The AMC surface is applied to three planar di...

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Veröffentlicht in:	IET microwaves, antennas & propagation antennas & propagation, 2019-02, Vol.13 (3), p.326-333
Hauptverfasser:	Li, RongLin, Qin, Yue, Li, Fuyun, Wu, Linjuan, Cui, Yuehui
Format:	Artikel
Sprache:	eng
Schlagworte:	AMC cell AMC surface artificial magnetic conductor surface broadband antennas broadband planar antennas circularly polarised antenna dipole antennas dual‐polarised antenna electromagnetic metamaterials frequency 0.68 GHz to 1.02 GHz frequency 0.69 GHz to 0.96 GHz frequency 0.75 GHz to 1.05 GHz frequency selective surfaces linearly polarised antenna metamaterial antennas microwave antennas planar antennas planar dipole antennas Research Article UHF antennas
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Beschreibung
Zusammenfassung:	A novel artificial magnetic conductor (AMC) surface based on spiral strips is proposed, which consists of 9 × 9 AMC cells. Each AMC cell includes a spiral strip to increase its inductance, thus featuring a wide bandwidth of 42% for ±90° reflection phase. The AMC surface is applied to three planar dipole antennas for lowering the antenna heights, including a linearly polarised (LP) antenna, a dual-polarised (DP) antenna, and a circularly polarised (CP) antenna. It is shown by simulation and experiment that the LP antenna achieves an impedance bandwidth of 40% (0.68–1.02 GHz) for \|S11\|
ISSN:	1751-8725 1751-8733
DOI:	10.1049/iet-map.2018.5489