Design of ultra wideband isolation of RF switch for microwave imaging in medical application

Microwave imaging is an emerging technology in the medical application similar to that of other technologies, such as X-ray, Magnetic Resonance Imaging (MRI), and Computed Tomography scan (CT scan). In designing a microwave imaging system for medical application, it can use a monostatic radar approa...

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Main Author:	Mohd Sanusi, Nursyahirah
Format:	Thesis
Language:	English English
Published:	2021
Subjects:	T Technology (General)
Online Access:	http://eprints.utem.edu.my/id/eprint/25997/1/Design%20of%20ultra%20wideband%20isolation%20of%20RF%20switch%20for%20microwave%20imaging%20in%20medical%20application.pdf http://eprints.utem.edu.my/id/eprint/25997/2/Design%20of%20ultra%20wideband%20isolation%20of%20RF%20switch%20for%20microwave%20imaging%20in%20medical%20application.pdf
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spelling	my-utem-ep.259972022-09-29T12:03:48Z Design of ultra wideband isolation of RF switch for microwave imaging in medical application 2021 Mohd Sanusi, Nursyahirah T Technology (General) TK Electrical engineering. Electronics Nuclear engineering Microwave imaging is an emerging technology in the medical application similar to that of other technologies, such as X-ray, Magnetic Resonance Imaging (MRI), and Computed Tomography scan (CT scan). In designing a microwave imaging system for medical application, it can use a monostatic radar approach by transmitting a Gaussian pulse (with an ultra wideband (UWB) frequency) through several antennas. RF switches are designed to control the transmit and receive operations of the antennas in the microwave imaging system. However, there will be RF leakages to another unused antennas, thus ultra wideband isolation performance is essential in RF switch design to avoid any signal power leakage between antenna ports during transmit and receive signal operations. The circuit topology was studied to achieved UWB isolation performance for microwave imaging. The fabrication technology PIN diodes was investigate using silicon PIN diodes and silicon glass PIN diodes. The result of S-parameter was analyze in term of return loss, insertion loss and isolation. Therefore, in this research work, two techniques were chosen for further investigation and study for ultra wideband isolation performance of RF switch; they are RF switch topology and fabrication technology of PIN diode. Four different RF switch topologies were investigated in a single pole double throw (SPDT) switch. Concurrently, in the same SPDT switch circuit, two fabrication technologies of PIN diode were selected and investigated as well. They are silicon PIN diodes (from Skyworks Solutions) and silicon glass PIN diodes (from MACOM Technology Solutions). The best RF switch topology in SPDT switch was then selected and used in a single pole eight throw (SP8T) switch, which is a final RF switch design for the front end system of microwave imaging. As result, first, series-shunt-shunt is the best RF switch topology for ultra wideband isolation performance compared to other topologies. It was selected after considering other trade off such as return loss and insertion loss performances. Second, in the fabrication technology of PIN diodes, it was found that the silicon glass PIN diode (MACOM) gave the best isolation compared to silicon PIN diode (Skyworks). In the simulated result, the final design of the RF switch (SP8T) produced 9.3 GHz of isolation bandwidth that can be used for Gaussian pulse bandwidth up to 9.3 GHz (from 1.7 GHz to 11 GHz frequency spectrum). Thus, by combining these two techniques; the series-shunt-shunt topology and silicon glass PIN diode gave the best ultra wideband isolation of RF switch for microwave imaging in medical applications. 2021 Thesis http://eprints.utem.edu.my/id/eprint/25997/ http://eprints.utem.edu.my/id/eprint/25997/1/Design%20of%20ultra%20wideband%20isolation%20of%20RF%20switch%20for%20microwave%20imaging%20in%20medical%20application.pdf text en public http://eprints.utem.edu.my/id/eprint/25997/2/Design%20of%20ultra%20wideband%20isolation%20of%20RF%20switch%20for%20microwave%20imaging%20in%20medical%20application.pdf text en validuser https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=121288 mphil masters Universiti Teknikal Malaysia Melaka Faculty of Electronic and Computer Engineering Shairi, Noor Azwan
institution	Universiti Teknikal Malaysia Melaka
collection	UTeM Repository
language	English English
advisor	Shairi, Noor Azwan
topic	T Technology (General) T Technology (General)
spellingShingle	T Technology (General) T Technology (General) Mohd Sanusi, Nursyahirah Design of ultra wideband isolation of RF switch for microwave imaging in medical application
description	Microwave imaging is an emerging technology in the medical application similar to that of other technologies, such as X-ray, Magnetic Resonance Imaging (MRI), and Computed Tomography scan (CT scan). In designing a microwave imaging system for medical application, it can use a monostatic radar approach by transmitting a Gaussian pulse (with an ultra wideband (UWB) frequency) through several antennas. RF switches are designed to control the transmit and receive operations of the antennas in the microwave imaging system. However, there will be RF leakages to another unused antennas, thus ultra wideband isolation performance is essential in RF switch design to avoid any signal power leakage between antenna ports during transmit and receive signal operations. The circuit topology was studied to achieved UWB isolation performance for microwave imaging. The fabrication technology PIN diodes was investigate using silicon PIN diodes and silicon glass PIN diodes. The result of S-parameter was analyze in term of return loss, insertion loss and isolation. Therefore, in this research work, two techniques were chosen for further investigation and study for ultra wideband isolation performance of RF switch; they are RF switch topology and fabrication technology of PIN diode. Four different RF switch topologies were investigated in a single pole double throw (SPDT) switch. Concurrently, in the same SPDT switch circuit, two fabrication technologies of PIN diode were selected and investigated as well. They are silicon PIN diodes (from Skyworks Solutions) and silicon glass PIN diodes (from MACOM Technology Solutions). The best RF switch topology in SPDT switch was then selected and used in a single pole eight throw (SP8T) switch, which is a final RF switch design for the front end system of microwave imaging. As result, first, series-shunt-shunt is the best RF switch topology for ultra wideband isolation performance compared to other topologies. It was selected after considering other trade off such as return loss and insertion loss performances. Second, in the fabrication technology of PIN diodes, it was found that the silicon glass PIN diode (MACOM) gave the best isolation compared to silicon PIN diode (Skyworks). In the simulated result, the final design of the RF switch (SP8T) produced 9.3 GHz of isolation bandwidth that can be used for Gaussian pulse bandwidth up to 9.3 GHz (from 1.7 GHz to 11 GHz frequency spectrum). Thus, by combining these two techniques; the series-shunt-shunt topology and silicon glass PIN diode gave the best ultra wideband isolation of RF switch for microwave imaging in medical applications.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Mohd Sanusi, Nursyahirah
author_facet	Mohd Sanusi, Nursyahirah
author_sort	Mohd Sanusi, Nursyahirah
title	Design of ultra wideband isolation of RF switch for microwave imaging in medical application
title_short	Design of ultra wideband isolation of RF switch for microwave imaging in medical application
title_full	Design of ultra wideband isolation of RF switch for microwave imaging in medical application
title_fullStr	Design of ultra wideband isolation of RF switch for microwave imaging in medical application
title_full_unstemmed	Design of ultra wideband isolation of RF switch for microwave imaging in medical application
title_sort	design of ultra wideband isolation of rf switch for microwave imaging in medical application
granting_institution	Universiti Teknikal Malaysia Melaka
granting_department	Faculty of Electronic and Computer Engineering
publishDate	2021
url	http://eprints.utem.edu.my/id/eprint/25997/1/Design%20of%20ultra%20wideband%20isolation%20of%20RF%20switch%20for%20microwave%20imaging%20in%20medical%20application.pdf http://eprints.utem.edu.my/id/eprint/25997/2/Design%20of%20ultra%20wideband%20isolation%20of%20RF%20switch%20for%20microwave%20imaging%20in%20medical%20application.pdf
_version_	1747834151666450432

Design of ultra wideband isolation of RF switch for microwave imaging in medical application

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