Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/34881
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dc.titleBandpass sigma-delta modulator with anti-resonance cancellation
dc.contributorTHE NATIONAL UNIVERSITY OF SINGAPORE
dc.contributorINSTITUTE OF MICROELECTRONICS
dc.contributor.authorXU YONG PING
dc.contributor.authorSUN WAI HOONG
dc.contributor.authorWANG XIAOFENG
dc.contributor.authorWANG ZHE
dc.contributor.authorLIW SEAN IAN SAXON
dc.date.accessioned2012-10-05T06:01:52Z
dc.date.available2012-10-05T06:01:52Z
dc.date.issued2006-07-26
dc.identifier.citationXU YONG PING,SUN WAI HOONG,WANG XIAOFENG,WANG ZHE,LIW SEAN IAN SAXON (2006-07-26). Bandpass sigma-delta modulator with anti-resonance cancellation. ScholarBank@NUS Repository.
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/34881
dc.description.abstractA bandpass sigma-delta modulator using acoustic resonators or micro-mechanical resonators. In order to improve resolution at hight frequencies, acoustic resonators or micro-mechanical resonators are utilized in a sigma-delta modulator instead of electronic resonators. The quantized output is fed back using a pair of D/A converters to an input summation device. In fourth order devices, the feed back is to two summation devices in series. Such a sigma-delta modulator is usable in a software defined radio cellular telephone system and in other applications where high-frequency and high-resolution A/D conversion is required. A cancellation circuit may remove the anti-resonance signal from a resonator. An anti-resonance cancellation circuit removes the anti-resonance from the output of the resonators by providing a signal which is subtracted from the output of the resonator. The cancellation circuit includes a capacitor which is matched to the static capacitance of the resonator. The loads of the resonator and cancellation network are also matched.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/http://analytics.patsnap.com/patent_view/view?pn=EP1684421A1
dc.sourcePatSnap
dc.typePatent
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.contributor.departmentINSTITUTE OF MICROELECTRONICS
dc.identifier.isiutNOT_IN_WOS
dc.description.patentnoEP1684421A1
dc.description.patenttypePublished Application
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