A compact and high gain circularly polarized antenna for CubeSat S-band application

This project focuses on a compact antenna with high gain and circular polarization for S-band CubeSat application. CubeSat is categorized as a type of pico-satellite with a dimension of 10 x 10 x 10 cm3. By utilizing the component-of-the-shelf (COTS), this class of pico-satellite is capable of reduc...

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Format:	Thesis
Language:	English
Subjects:	Antennas (Electronics) Satellites Artificial satellites in telecommunication S-band CubeSat
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78359/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78359/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78359/3/Abdul%20Halim%20Lokman.pdf
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id	my-unimap-78359
record_format	uketd_dc
spelling	my-unimap-783592023-04-18T02:00:25Z A compact and high gain circularly polarized antenna for CubeSat S-band application Soh, Ping Jack, Assoc. Prof. Dr. This project focuses on a compact antenna with high gain and circular polarization for S-band CubeSat application. CubeSat is categorized as a type of pico-satellite with a dimension of 10 x 10 x 10 cm3. By utilizing the component-of-the-shelf (COTS), this class of pico-satellite is capable of reducing the development cost and time compared to commercial satellites in segments such as space research, earth observation, inter-satellite communication, and the educational purpose. Due to the CubeSat’s size and weight constraints, most of their antennas are integrated with deployment mechanisms. One of the most popular deployable mechanisms used in CubeSats is the tape spring mechanism. In this project, two types of high gain circularly polarized antenna is designed to comply with 1U and 3U CubeSat at S-band frequency. A compact circularly polarized antenna is designed with a size of 55 x 55 x 0.85 mm3. The antenna operates with at least -10 dB of reflection coefficient, at least 3 dB of axial ratio and a gain of 3.84 dBi at 2.4 GHz. The antenna propagates with a right-handed circular polarization (RHCP) at 0° azimuth, and left-handed circular polarization (LHCP) at 180° azimuth. Such gain level needs to be improved for long-range CubeSat communication. A reflectarray is then designed to obtain an improved simulated gain of 10.49 dBi, satisfactory impedance and axial ratio bandwidth, with propagation directed at 29° azimuth. Despite its overall larger size of 297 x 330 x 0.635 mm3, and a focal length of 243 mm, it is still applicable for a 3U CubeSat together with a tape spring based deployment mechanism. Meanwhile, the reflectarray feed is also integrated on the CubeSat with its separate deployment mechanism. The initially designed circularly polarized antenna is also integrated with an artificial magnetic conductor (AMC) plane, which resulted in both gain enhancement and back radiation reduction. Since the initial antenna produces a bidirectional radiation pattern, the AMC plane reduced its back radiation and converting it into a unidirectional pattern. With a dimension of 99 x 99 x 21.485 mm3, the AMC plane increased the gain up to 7.7 dBi with RHCP mode. Besides that, a 19.16 % 10 dB impedance bandwidth and 10.4 % of 3 dB axial ratio bandwidth are achieved at 2.4 GHz. Due to the required gap of 20 mm between antenna and AMC plane, it has been integrated on the CubeSat using a simple spring coil deployment mechanism. Universiti Malaysia Perlis (UniMAP) Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/78359 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78359/4/license.txt 8a4605be74aa9ea9d79846c1fba20a33 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78359/1/Page%201-24.pdf 0d68ae338a16ec1a8981e155f7582142 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78359/2/Full%20text.pdf db97cbb009a23b32583e458c32c58440 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78359/3/Abdul%20Halim%20Lokman.pdf c224926f28ab86c1c471c25244831b12 Universiti Malaysia Perlis (UniMAP) Antennas (Electronics) Satellites Artificial satellites in telecommunication S-band CubeSat School of Computer and Communication Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
advisor	Soh, Ping Jack, Assoc. Prof. Dr.
topic	Antennas (Electronics) Satellites Artificial satellites in telecommunication S-band CubeSat
spellingShingle	Antennas (Electronics) Satellites Artificial satellites in telecommunication S-band CubeSat A compact and high gain circularly polarized antenna for CubeSat S-band application
description	This project focuses on a compact antenna with high gain and circular polarization for S-band CubeSat application. CubeSat is categorized as a type of pico-satellite with a dimension of 10 x 10 x 10 cm3. By utilizing the component-of-the-shelf (COTS), this class of pico-satellite is capable of reducing the development cost and time compared to commercial satellites in segments such as space research, earth observation, inter-satellite communication, and the educational purpose. Due to the CubeSat’s size and weight constraints, most of their antennas are integrated with deployment mechanisms. One of the most popular deployable mechanisms used in CubeSats is the tape spring mechanism. In this project, two types of high gain circularly polarized antenna is designed to comply with 1U and 3U CubeSat at S-band frequency. A compact circularly polarized antenna is designed with a size of 55 x 55 x 0.85 mm3. The antenna operates with at least -10 dB of reflection coefficient, at least 3 dB of axial ratio and a gain of 3.84 dBi at 2.4 GHz. The antenna propagates with a right-handed circular polarization (RHCP) at 0° azimuth, and left-handed circular polarization (LHCP) at 180° azimuth. Such gain level needs to be improved for long-range CubeSat communication. A reflectarray is then designed to obtain an improved simulated gain of 10.49 dBi, satisfactory impedance and axial ratio bandwidth, with propagation directed at 29° azimuth. Despite its overall larger size of 297 x 330 x 0.635 mm3, and a focal length of 243 mm, it is still applicable for a 3U CubeSat together with a tape spring based deployment mechanism. Meanwhile, the reflectarray feed is also integrated on the CubeSat with its separate deployment mechanism. The initially designed circularly polarized antenna is also integrated with an artificial magnetic conductor (AMC) plane, which resulted in both gain enhancement and back radiation reduction. Since the initial antenna produces a bidirectional radiation pattern, the AMC plane reduced its back radiation and converting it into a unidirectional pattern. With a dimension of 99 x 99 x 21.485 mm3, the AMC plane increased the gain up to 7.7 dBi with RHCP mode. Besides that, a 19.16 % 10 dB impedance bandwidth and 10.4 % of 3 dB axial ratio bandwidth are achieved at 2.4 GHz. Due to the required gap of 20 mm between antenna and AMC plane, it has been integrated on the CubeSat using a simple spring coil deployment mechanism.
format	Thesis
title	A compact and high gain circularly polarized antenna for CubeSat S-band application
title_short	A compact and high gain circularly polarized antenna for CubeSat S-band application
title_full	A compact and high gain circularly polarized antenna for CubeSat S-band application
title_fullStr	A compact and high gain circularly polarized antenna for CubeSat S-band application
title_full_unstemmed	A compact and high gain circularly polarized antenna for CubeSat S-band application
title_sort	compact and high gain circularly polarized antenna for cubesat s-band application
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Computer and Communication Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78359/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78359/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78359/3/Abdul%20Halim%20Lokman.pdf
_version_	1776104286131847168

A compact and high gain circularly polarized antenna for CubeSat S-band application

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