Very small planar broadband monopole antenna with hybrid trapezoidal–elliptical radiator

A compact and broadband printed monopole antenna (PMA) with a hybrid trapezoidal–elliptical radiator is proposed. An overlap region between the trapezoidal and elliptical patches is introduced to enhance the impedance bandwidth. Meanwhile, by etching two symmetrical quarter-elliptical slots on the g...

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Veröffentlicht in:	IET microwaves, antennas & propagation antennas & propagation, 2017-03, Vol.11 (4), p.542-547
1. Verfasser:	Dastranj, Aliakbar
Format:	Artikel
Sprache:	eng
Schlagworte:	antenna gain antenna radiation patterns Antennas Bandwidth Broadband broadband antennas elliptical patch ellipticity ratio optimisation etching frequency 2.4 GHz to 18.6 GHz Ground plane Group delay hybrid trapezoidal‐elliptical radiator Impedance impedance bandwidth enhancement impedance bandwidth improvement microstrip antennas Monopole antennas nearly constant group delay omnidirectional antennas omnidirectional radiation pattern overlap region planar antennas PMA radiation efficiency Radiators Research Article slot antennas symmetrical quarter‐elliptical slot trapezoidal patch very small compact planar broadband printed monopole antenna
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Beschreibung
Zusammenfassung:	A compact and broadband printed monopole antenna (PMA) with a hybrid trapezoidal–elliptical radiator is proposed. An overlap region between the trapezoidal and elliptical patches is introduced to enhance the impedance bandwidth. Meanwhile, by etching two symmetrical quarter-elliptical slots on the ground plane and optimising the ellipticity ratio, further improvement in the impedance bandwidth is achieved. Measured results show that the antenna can cover the frequency range of 2.4–18.6 GHz (\|S11\|
ISSN:	1751-8725 1751-8733 1751-8733
DOI:	10.1049/iet-map.2016.0701