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A Simple-Topology Compact Broadband Circularly Polarized Antenna With Unidirectional Radiation Pattern

Abstrakt

In this letter, a geometrically simple, reflector-backed single-point-fed circularly polarized (CP) antenna with unidirectional radiation pattern is presented. The structure comprises a simple coplanar waveguide (CPW) feeding circuit with an open slot etched on one side of the coplanar ground. The enhanced CP bandwidth is obtained by combining the loop mode, the slot mode, and the asymmetrical configuration of the coplanar ground planes along the feed line. All parameters are optimized at the full-wave level of description for the best impedance and axial ratio (AR) bandwidth. The antenna footprint is only 0.35 λo×0.39 λo at the lowest CP operating frequency of 3.1 GHz. The measurement results indicate 82% impedance bandwidth (from 3 GHz to 7.2 GHz), and 80% AR bandwidth (from 3.1 GHz to 7.2 GHz). A unidirectional right-hand circular polarization (RHCP) radiation pattern in the +z-direction is also achieved by adding a reflector. The peak realized gain of the antenna is 6.7 dBic, and the peak radiation efficiency is 98%.

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Copyright (2019 IEEE)

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Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
IEEE Antennas and Wireless Propagation Letters nr 18, strony 2612 - 2616,
ISSN: 1536-1225
Język:
angielski
Rok wydania:
2019
Opis bibliograficzny:
Ullah U., Kozieł S., Mabrouk I.: A Simple-Topology Compact Broadband Circularly Polarized Antenna With Unidirectional Radiation Pattern// IEEE Antennas and Wireless Propagation Letters -Vol. 18,iss. 12 (2019), s.2612-2616
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1109/lawp.2019.2945543
Bibliografia: test
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Weryfikacja:
Politechnika Gdańska

wyświetlono 107 razy

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