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dc.contributor.authorZhang, Junfeng
dc.contributor.authorXu, Yang
dc.contributor.authorZhang, Zehong
dc.contributor.authorSun, Yichuang
dc.contributor.authorWang, Zhihua
dc.contributor.authorChi, Baoyong
dc.date.accessioned2017-05-04T17:06:16Z
dc.date.available2017-05-04T17:06:16Z
dc.date.issued2017-04-01
dc.identifier.citationZhang , J , Xu , Y , Zhang , Z , Sun , Y , Wang , Z & Chi , B 2017 , ' A 10-b Fourth-Order Quadrature Bandpass Continuous-Time ΣΔ Modulator With 33-MHz Bandwidth for a Dual-Channel GNSS Receiver ' , IEEE Transactions on Microwave Theory and Techniques , vol. 65 , no. 4 , pp. 1303-1314 . https://doi.org/10.1109/TMTT.2017.2662378
dc.identifier.issn0018-9480
dc.identifier.otherPURE: 11254925
dc.identifier.otherPURE UUID: a68dc263-f9b2-4e26-a8e4-3113c4354a92
dc.identifier.otherScopus: 85013249543
dc.identifier.urihttp://hdl.handle.net/2299/18162
dc.descriptionThis document is the Accepted Manuscript version of the following article: Junfeng Zhang, Yang Xu, Zehong Zhang, Yichuang Sun, Zhihua Wang, and Baoyong Chi, ‘A 10-b Fourth-Order Quadrature Bandpass Continuous-Time ΣΔ Modulator With 33-MHz Bandwidth for a Dual-Channel GNSS Receiver’, IEEE Transactions on Microwave Theory and Practice, Vol. 65 (4): 1303-1314, first published online 16 February 2017. The version of record is available online at DOI: 10.1109/TMTT.2017.266237, Published by IEEE. © 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
dc.description.abstractA fourth-order quadrature bandpass continuous-time sigma-delta modulator for a dual-channel global navigation satellite system (GNSS) receiver is presented. With a bandwidth (BW) of 33 MHz, the modulator is able to digitalize the downconverted GNSS signals in two adjacent signal bands simultaneously, realizing dual-channel GNSS reception with one receiver channel instead of two independent receiver channels. To maintain the loop-stability of the high-order architecture, any extra loop phase shifting should be minimized. In the system architecture, a feedback and feedforward hybrid architecture is used to implement the fourth-order loop-filter, and a return-to-zero (RZ) feedback after the discrete-time differential operation is introduced into the input of the final integrator to realize the excess loop delay compensation, saving a spare summing amplifier. In the circuit implementation, power-efficient amplifiers with high-frequency active feedforward and antipole-splitting techniques are employed in the active RC integrators, and self-calibrated comparators are used to implement the low-power 3-b quantizers. These power saving techniques help achieve superior figure of merit for the presented modulator. With a sampling rate of 460 MHz, current-steering digital-analog converters are chosen to guarantee high conversion speed. Implemented in only 180-nm CMOS, the modulator achieves 62.1-dB peak signal to noise and distortion ratio, 64-dB dynamic range, and 59.3-dB image rejection ratio, with a BW of 33 MHz, and consumes 54.4 mW from a 1.8 V power supply.en
dc.format.extent12
dc.language.isoeng
dc.relation.ispartofIEEE Transactions on Microwave Theory and Techniques
dc.rightsOpen
dc.subjectRadiation
dc.subjectCondensed Matter Physics
dc.subjectElectrical and Electronic Engineering
dc.titleA 10-b Fourth-Order Quadrature Bandpass Continuous-Time ΣΔ Modulator With 33-MHz Bandwidth for a Dual-Channel GNSS Receiveren
dc.contributor.institutionCentre for Engineering Research
dc.contributor.institutionRadio and Mobile Communication Systems
dc.contributor.institutionSmart Electronics Devices and Networks
dc.contributor.institutionSchool of Engineering and Technology
dc.contributor.institutionCommunications and Intelligent Systems
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85013249543&partnerID=8YFLogxK
dc.relation.schoolSchool of Engineering and Technology
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2017-04-01
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1109/TMTT.2017.2662378
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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