High isolation of single pole double throw switch with switchable resonator for wireless communications

In wireless communication systems, Single Pole Double Throw (SPDT) switches are widely used in radio frequency (RF) front-end system to support transmit and receive modes switching for Time Division Duplex (TDD)communication. High isolation between transmitter and receiver in the RF front-end is one...

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Main Author:	Shairi, Noor Azwan
Format:	Thesis
Language:	English English
Published:	2015
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utem.edu.my/id/eprint/15865/1/NoorAzwan%20Shairi.pdf http://eprints.utem.edu.my/id/eprint/15865/2/High%20isolation%20of%20single%20pole%20double%20throw%20switch%20with%20switchable%20resonator%20for%20wireless%20communications.pdf
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id	my-utem-ep.15865
record_format	uketd_dc
institution	Universiti Teknikal Malaysia Melaka
collection	UTeM Repository
language	English English
advisor	Ahmad, Badrul Hisham
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Shairi, Noor Azwan High isolation of single pole double throw switch with switchable resonator for wireless communications
description	In wireless communication systems, Single Pole Double Throw (SPDT) switches are widely used in radio frequency (RF) front-end system to support transmit and receive modes switching for Time Division Duplex (TDD)communication. High isolation between transmitter and receiver in the RF front-end is one of the key parameters in SPDT switch design, especially for high power applications such as a base station and wireless infrastructure. Therefore, this research work introduced a new high isolation of SPDT discrete switch design using switchable resonator that includes minimum number of PIN diodes or produce absorptive feature. The microstrip resonators such as a transmission line stub, radial stub, parallel coupled line and ring were selected in this research work. By analyzing a mathematical model of simplified SPDT switch with resonator, a high isolation could be achieved due to a bandstop response of the resonators. These resonators were able to reconfigure between bandstop and allpass or bandstop and bandpass responses to support transmit and receive modes switching. The proposed SPDT switches with switchable resonator were demonstrated for the applications of Time Division Synchronous Code Division Multiple Access (TDSCDMA) in 2 GHz band and Worldwide Interoperability for Microwave Access (WiMAX) and Long Term Evolution (LTE) in 3.5 GHz band. Results showed that isolation of more than -25 dB was achieved in the SPDT discrete switch design using these four types of switchable resonators and suitable for high power application with 1 Watt and 10 Watt transmit output power. Despite high isolation performance, the proposed SPDT switches (with transmission line stub and radial stub resonators) used a minimum number of PIN diodes compared to conventional multiple cascaded switches technique. Meanwhile, the proposed SPDT switches (with parallel coupled line and ring resonators) produced high isolation with absorptive feature without additional circuit components.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Shairi, Noor Azwan
author_facet	Shairi, Noor Azwan
author_sort	Shairi, Noor Azwan
title	High isolation of single pole double throw switch with switchable resonator for wireless communications
title_short	High isolation of single pole double throw switch with switchable resonator for wireless communications
title_full	High isolation of single pole double throw switch with switchable resonator for wireless communications
title_fullStr	High isolation of single pole double throw switch with switchable resonator for wireless communications
title_full_unstemmed	High isolation of single pole double throw switch with switchable resonator for wireless communications
title_sort	high isolation of single pole double throw switch with switchable resonator for wireless communications
granting_institution	Universiti Teknikal Malaysia Melaka
granting_department	Faculty of Electronics and Computer Engineering
publishDate	2015
url	http://eprints.utem.edu.my/id/eprint/15865/1/NoorAzwan%20Shairi.pdf http://eprints.utem.edu.my/id/eprint/15865/2/High%20isolation%20of%20single%20pole%20double%20throw%20switch%20with%20switchable%20resonator%20for%20wireless%20communications.pdf
_version_	1747833877787836416
spelling	my-utem-ep.158652022-04-19T09:55:28Z High isolation of single pole double throw switch with switchable resonator for wireless communications 2015 Shairi, Noor Azwan TK Electrical engineering. Electronics Nuclear engineering In wireless communication systems, Single Pole Double Throw (SPDT) switches are widely used in radio frequency (RF) front-end system to support transmit and receive modes switching for Time Division Duplex (TDD)communication. High isolation between transmitter and receiver in the RF front-end is one of the key parameters in SPDT switch design, especially for high power applications such as a base station and wireless infrastructure. Therefore, this research work introduced a new high isolation of SPDT discrete switch design using switchable resonator that includes minimum number of PIN diodes or produce absorptive feature. The microstrip resonators such as a transmission line stub, radial stub, parallel coupled line and ring were selected in this research work. By analyzing a mathematical model of simplified SPDT switch with resonator, a high isolation could be achieved due to a bandstop response of the resonators. These resonators were able to reconfigure between bandstop and allpass or bandstop and bandpass responses to support transmit and receive modes switching. The proposed SPDT switches with switchable resonator were demonstrated for the applications of Time Division Synchronous Code Division Multiple Access (TDSCDMA) in 2 GHz band and Worldwide Interoperability for Microwave Access (WiMAX) and Long Term Evolution (LTE) in 3.5 GHz band. Results showed that isolation of more than -25 dB was achieved in the SPDT discrete switch design using these four types of switchable resonators and suitable for high power application with 1 Watt and 10 Watt transmit output power. Despite high isolation performance, the proposed SPDT switches (with transmission line stub and radial stub resonators) used a minimum number of PIN diodes compared to conventional multiple cascaded switches technique. Meanwhile, the proposed SPDT switches (with parallel coupled line and ring resonators) produced high isolation with absorptive feature without additional circuit components. 2015 Thesis http://eprints.utem.edu.my/id/eprint/15865/ http://eprints.utem.edu.my/id/eprint/15865/1/NoorAzwan%20Shairi.pdf text en public http://eprints.utem.edu.my/id/eprint/15865/2/High%20isolation%20of%20single%20pole%20double%20throw%20switch%20with%20switchable%20resonator%20for%20wireless%20communications.pdf text en validuser https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=96092 phd doctoral Universiti Teknikal Malaysia Melaka Faculty of Electronics and Computer Engineering Ahmad, Badrul Hisham 1. Adoum, B.A. and Wong, P.W., 2012. 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High isolation of single pole double throw switch with switchable resonator for wireless communications

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