A 1 GHz differential 2nd-order lowpass sigma delta modulator in CMOS for wireless receivers

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dc.contributor.authorZhu, Y.
dc.contributor.authorAl-Sarawi, S.
dc.contributor.authorLiebelt, M.
dc.contributor.conferenceMicroelectronics, MEMS, and Nanotechnology (2003 : Perth, Australia)
dc.contributor.editorAbbott, D.
dc.contributor.editorEshraghian, K.
dc.contributor.editorMusca, C.
dc.contributor.editorPavlidis, D.
dc.contributor.editorWeste, N.
dc.date.issued2004
dc.description©2004 COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
dc.description.abstractThis paper presents the design of a 1 GHz continuous-time second order Lowpass Sigma Delta Modulator (LPSDM). The design is intended to meet the future requirements of wideband wireless receivers. The continuous-time Noise Transfer Function (NTF) for the modulator is realized using two Gm-C integrators with negative transconductance feedback and three linearized Gm elements. A three-stage delayed comparator is employed for designing the one bit quantizer, therefore a delayed NTF had to be synthesized. The presented target design is 0.18µm CMOS process. The designed chip uses both 3.3V and 1.8V MOSFETs and consumes 80mW including the clock driver and the output buffer. The performance of the modulator based on post layout simulation is 11 bits for a 5 MHz bandwidth and 8.6 bits for an 11MHz bandwidth.
dc.description.statementofresponsibilityYingbo Zhu, Said F. Al-Sarawi, and Michael Liebelt
dc.identifier.citationMicroelectronics: Design, Technology, and Packaging / Derek Abbott, Kamran Eshraghian, Charles A. Musca, Dimitris Pavlidis, Neil Weste (eds.), pp. 35-46
dc.identifier.doi10.1117/12.521414
dc.identifier.isbn0819451673
dc.identifier.issn0277-786X
dc.identifier.issn1996-756X
dc.identifier.orcidAl-Sarawi, S. [0000-0002-3242-8197]
dc.identifier.orcidLiebelt, M. [0000-0001-6610-2876]
dc.identifier.urihttp://hdl.handle.net/2440/28450
dc.language.isoen
dc.publisherSPIE
dc.publisher.placeBellingham, WA USA
dc.relation.ispartofseriesProceedings of SPIE--the International Society for Optical Engineering ; 5274.
dc.source.urihttps://doi.org/10.1117/12.521414
dc.titleA 1 GHz differential 2nd-order lowpass sigma delta modulator in CMOS for wireless receivers
dc.typeConference paper
pubs.publication-statusPublished

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