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A wideband circularly-polarized spiral antenna for CubeSat application

Ahmad Mustafa, Ahmad Mujahid and Mohamad, Sarah Yasmin and Abdul Malek, Norun Farihah and Mohd Isa, Farah Nadia and Islam, Md. Rafiqul (2017) A wideband circularly-polarized spiral antenna for CubeSat application. In: 4th International Conference on Communication and Computer Engineering (ICOCOE 2017), 18th-20th April 2017, Penang. (In Press)

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Abstract

In this paper, a wideband circularly-polarized spiral antenna is proposed to be used for CubeSat application. The antenna covers two of CubeSat frequencies; the S-band (2.2 GHz) and X-band (8 GHz). The proposed antenna belongs to the wideband and frequency-independent antenna category, which are known to provide a constant radiation pattern, impedance and polarization throughout the whole bandwidth. The performance of the spiral is compared in two different conditions; in free space and above a ground plane with a separation distance of λ/4 at the operating frequency of 2.2 GHz and 8 GHz. The spiral above the ground plane exhibits a unidirectional radiation and higher gain with an increase of 26.6% (2.2 GHz) to 34.6% (8 GHz) than the free space spiral. Moreover, the return loss also managed to stay within the ideal limit of S11<-10dB (-19.528 dB at 2.2 GHz, and -21.92 dB at 8 GHz) and exhibits circularly-polarized radiation with low axial ratio < 3 dB (0.78 dB at 2.2 GHz, and 0.89 dB at 8 GHz).

Item Type: Conference or Workshop Item (Plenary Papers)
Additional Information: 7441/57487
Uncontrolled Keywords: circular polarization, CubeSat, frequency-independent antennas, spiral antennas, wideband antennas
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunication. Including telegraphy, radio, radar, television
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User: Dr Sarah Yasmin Mohamad
Date Deposited: 30 Oct 2017 09:03
Last Modified: 30 Oct 2017 09:03
URI: http://irep.iium.edu.my/id/eprint/57487

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