Compact tunable bandpass filter with wide tuning range of centre frequency and bandwidth using coupled lines and short-ended stubs

Zhu, H; Abbosh, A

Compact tunable bandpass filter with wide tuning range of centre frequency and bandwidth using coupled lines and short-ended stubs

Zhu, H

Abbosh, A

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Publisher:: INST ENGINEERING TECHNOLOGY-IET
Publication Type:: Journal Article
Citation:: IET Microwaves, Antennas and Propagation, 2016, 10, (8), pp. 863-870
Issue Date:: 2016-06-05

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Field	Value	Language
dc.contributor.author	Zhu, H https://orcid.org/0000-0002-5157-8457
dc.contributor.author	Abbosh, A
dc.date.accessioned	2022-07-07T22:57:48Z
dc.date.available	2022-07-07T22:57:48Z
dc.date.issued	2016-06-05
dc.identifier.citation	IET Microwaves, Antennas and Propagation, 2016, 10, (8), pp. 863-870
dc.identifier.issn	1751-8725
dc.identifier.issn	1751-8733
dc.identifier.uri	http://hdl.handle.net/10453/158730
dc.description.abstract	A tunable bandpass filter with wide tuning range of both its centre frequency and bandwidth is presented. This type of filter is a key element in modern wideband and multiband systems. The proposed filter is based on short sections of two pairs of shunt connected parallel-coupled lines and short-ended stub resonators, which are tuned using varactor diodes. The structure has two resonant modes as well as one-side edge transmission zero that can be relocated and controlled for any desired position. A thorough theoretical analysis is utilised to find the initial values of the filter's design parameters and estimate its performance. To validate the proposed design and its theoretical analysis, two prototype filters are fabricated and tested. The measured results indicate wide tuning range ratios for the centre frequency and bandwidth of up to 2.85 (0.52 to 1.48 GHz) and up to 5.2 (55 to 285 MHz), respectively. The fabricated filters are compact with an overall size (in guided wavelengths at the centre frequency) of less than 0.06 × 0.16.
dc.language	English
dc.publisher	INST ENGINEERING TECHNOLOGY-IET
dc.relation.ispartof	IET Microwaves, Antennas and Propagation
dc.relation.isbasedon	10.1049/iet-map.2015.0693
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0906 Electrical and Electronic Engineering, 1005 Communications Technologies
dc.subject.classification	Networking & Telecommunications
dc.title	Compact tunable bandpass filter with wide tuning range of centre frequency and bandwidth using coupled lines and short-ended stubs
dc.type	Journal Article
utslib.citation.volume	10
utslib.for	0906 Electrical and Electronic Engineering
utslib.for	1005 Communications Technologies
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Strength - GBDTC - Global Big Data Technologies
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2022-07-07T22:57:47Z
pubs.issue	8
pubs.publication-status	Published
pubs.volume	10
utslib.citation.issue	8

Abstract:

A tunable bandpass filter with wide tuning range of both its centre frequency and bandwidth is presented. This type of filter is a key element in modern wideband and multiband systems. The proposed filter is based on short sections of two pairs of shunt connected parallel-coupled lines and short-ended stub resonators, which are tuned using varactor diodes. The structure has two resonant modes as well as one-side edge transmission zero that can be relocated and controlled for any desired position. A thorough theoretical analysis is utilised to find the initial values of the filter's design parameters and estimate its performance. To validate the proposed design and its theoretical analysis, two prototype filters are fabricated and tested. The measured results indicate wide tuning range ratios for the centre frequency and bandwidth of up to 2.85 (0.52 to 1.48 GHz) and up to 5.2 (55 to 285 MHz), respectively. The fabricated filters are compact with an overall size (in guided wavelengths at the centre frequency) of less than 0.06 × 0.16.

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http://hdl.handle.net/10453/158730