Broadband circularly polarised hexagonal slot antenna excited by a tapered microstrip feeder |
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Authors: | Jong Gyun Baek Hyeong-Seok Kim |
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Affiliation: | 1. Division of Electronics and Electrical Engineering , Dongguk University , Seoul , 100-715 , Republic of Korea;2. School of Electrical and Electronics Engineering , Chung-Ang University , Seoul , Republic of Korea |
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Abstract: | In this article, a broadband circularly polarised slot antenna fed by a single microstrip line is implemented. The proposed antenna is composed of an unequilateral hexagonal slot to implement circular polarisation and tapered microstrip feeding line to enhance the impedance bandwidth. A conducting reflector is also employed to enhance the antenna gain. The proposed antenna, 60 mm × 60 mm × 18.12 mm in size, was fabricated and tested. The measured??10 dB reflection bandwidth and 3 dB axial ratio bandwidth were 48.9% and 17%, respectively. The measured gain of the fabricated antenna ranged from 5.4 dBi to 6 dBi within an axial ratio bandwidth of 3 dB. |
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Keywords: | circular polarisation hexagonal slot microstrip antenna broadband antenna slot antenna |
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