Compact differential diplex filtenna with common-mode suppression for highly integrated radio frequency front-ends

Li, D; Tang, MC; Wang, Y; Hu, KZ; Ziolkowski, RW

Compact differential diplex filtenna with common-mode suppression for highly integrated radio frequency front-ends

Li, D Tang, MC Wang, Y Hu, KZ Ziolkowski, RW

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Publisher:: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Publication Type:: Journal Article
Citation:: IEEE Transactions on Antennas and Propagation, 2021, 69, (11), pp. 7935-7940
Issue Date:: 2021-11-01

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Field	Value	Language
dc.contributor.author	Li, D
dc.contributor.author	Tang, MC
dc.contributor.author	Wang, Y
dc.contributor.author	Hu, KZ
dc.contributor.author	Ziolkowski, RW
dc.date.accessioned	2022-04-06T22:25:52Z
dc.date.available	2022-04-06T22:25:52Z
dc.date.issued	2021-11-01
dc.identifier.citation	IEEE Transactions on Antennas and Propagation, 2021, 69, (11), pp. 7935-7940
dc.identifier.issn	0018-926X
dc.identifier.issn	1558-2221
dc.identifier.uri	http://hdl.handle.net/10453/155973
dc.description.abstract	A compact, differential diplex filtenna (DDF) with common-mode (CM) suppression is presented. A rectangular dual-mode patch is developed that operates in both its TM10 mode and a reshaped TM30 mode to realize two passbands. Two capacitively loaded loop (CLL) resonators that work at different frequencies are combined with the dual-mode patch to enhance its operational bandwidth and to provide a second-order Chebyshev filter response for both passbands. A slot-coupled differential feed is adopted to suppress the harmonic and CM noise and to obtain symmetrical radiation patterns with low cross-polarization levels. The design process, which is based on filter synthesis theory, is detailed. A prototype operating over the 2.4G and 5.8G WLAN bands was fabricated, assembled, and tested. The measured results, in good agreement with their simulated values, confirm that it attains maximum broadside realized gains of 5.45 and 8.5 dBi and -10 dB fractional impedance bandwidths of 2.4% (2.42-2.48 GHz) and 5.2% (5.65-5.95 GHz) for the lower and upper passbands, respectively. Moreover, it exhibits good out-of-band rejection levels of 18 and 29 dB for the lower and upper stopbands, respectively.
dc.language	English
dc.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
dc.relation	http://purl.org/au-research/grants/arc/DP160102219
dc.relation.ispartof	IEEE Transactions on Antennas and Propagation
dc.relation.isbasedon	10.1109/TAP.2021.3083797
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	0906 Electrical and Electronic Engineering, 1005 Communications Technologies
dc.subject.classification	Networking & Telecommunications
dc.title	Compact differential diplex filtenna with common-mode suppression for highly integrated radio frequency front-ends
dc.type	Journal Article
utslib.citation.volume	69
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	open_access	*
utslib.copyright.embargo	2023-11-30T00:00:00+1000Z
dc.date.updated	2022-04-06T22:25:49Z
pubs.issue	11
pubs.publication-status	Published
pubs.volume	69
utslib.citation.issue	11

Abstract:

A compact, differential diplex filtenna (DDF) with common-mode (CM) suppression is presented. A rectangular dual-mode patch is developed that operates in both its TM10 mode and a reshaped TM30 mode to realize two passbands. Two capacitively loaded loop (CLL) resonators that work at different frequencies are combined with the dual-mode patch to enhance its operational bandwidth and to provide a second-order Chebyshev filter response for both passbands. A slot-coupled differential feed is adopted to suppress the harmonic and CM noise and to obtain symmetrical radiation patterns with low cross-polarization levels. The design process, which is based on filter synthesis theory, is detailed. A prototype operating over the 2.4G and 5.8G WLAN bands was fabricated, assembled, and tested. The measured results, in good agreement with their simulated values, confirm that it attains maximum broadside realized gains of 5.45 and 8.5 dBi and -10 dB fractional impedance bandwidths of 2.4% (2.42-2.48 GHz) and 5.2% (5.65-5.95 GHz) for the lower and upper passbands, respectively. Moreover, it exhibits good out-of-band rejection levels of 18 and 29 dB for the lower and upper stopbands, respectively.

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http://hdl.handle.net/10453/155973