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An Ingenious Multiport Interferometric Front-End for Concurrent Dual-Band Transmission
Pedro Cheong1; Tu, Mengting1; Choi, Wai Wa1; Wu, Ke2
2022-03-01
Source PublicationIEEE Transactions on Microwave Theory and Techniques
ISSN0018-9480
Volume70Issue:3Pages:1725-1731
Abstract

This article proposes and presents an innovative approach to realizing the concurrent dual-band transmission with only a single front-end and local oscillator at radio frequency (RF). Fundamentally, the proposed concurrent dual-band front-end is based on the conventional multiport interferometric architecture for single-band operation. Nevertheless, the conventional variable loads are replaced by diode networks with IF input signals to produce the RF signals at their designated center frequencies. Furthermore, due to the linear characteristics of a multiport network, the signals with different data contents will be mixed into both RF channels. To this end, an inverse matrix operation is applied to reversely convert the original data streams before the modulations of IF input signals. As a result, the two original data streams can be effectively modulated into specific RF channels (for transmission) with minimal interchannel interferences based on this configuration. In addition to the theoretical analyses, this innovative concurrent dual-band transmitting front-end has been investigated and verified with M-quadrature amplitude modulation (QAM) signals in simulations and experiments. All outcomes demonstrate excellent performances in concurrent dual-band transmission with significant reductions in both size and biasing power.

KeywordConcurrent Operation Dual-band Transmission Front-end Interchannel Interference Linear Transformation Multiport Network
DOI10.1109/TMTT.2021.3134692
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000734071800001
Scopus ID2-s2.0-85122067417
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Corresponding AuthorPedro Cheong
Affiliation1.Faculty of Science and Technology, University of Macau, Macau, Macao
2.Department of Electrical Engineering, Poly-Grames Research Center, Ecole Polytechnique de Montreal, Montreal, H3T 1J4, Canada
First Author AffilicationFaculty of Science and Technology
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Pedro Cheong,Tu, Mengting,Choi, Wai Wa,et al. An Ingenious Multiport Interferometric Front-End for Concurrent Dual-Band Transmission[J]. IEEE Transactions on Microwave Theory and Techniques,2022,70(3):1725-1731.
APA Pedro Cheong,Tu, Mengting,Choi, Wai Wa,&Wu, Ke.(2022).An Ingenious Multiport Interferometric Front-End for Concurrent Dual-Band Transmission.IEEE Transactions on Microwave Theory and Techniques,70(3),1725-1731.
MLA Pedro Cheong,et al."An Ingenious Multiport Interferometric Front-End for Concurrent Dual-Band Transmission".IEEE Transactions on Microwave Theory and Techniques 70.3(2022):1725-1731.
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