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dc.contributor.authorShiao, Yu-Shao Jerryen_US
dc.contributor.authorChiueh, Tzihongen_US
dc.contributor.authorHu, Roberten_US
dc.date.accessioned2019-04-03T06:47:52Z-
dc.date.available2019-04-03T06:47:52Z-
dc.date.issued2012-01-01en_US
dc.identifier.isbn978-0-8194-9153-4en_US
dc.identifier.issn0277-786Xen_US
dc.identifier.urihttp://dx.doi.org/10.1117/12.924627en_US
dc.identifier.urihttp://hdl.handle.net/11536/135477-
dc.description.abstractWe propose analog-to-digital converters (ADCs) using spread spectrum technology in cryogenic receivers or at warm room temperature for coherent receiver backend systems. As receiver signals are processed and stored digitally, ADCs play a critical role in backend read-out systems. To minimize signal distortion, the down-converted signals should be digitized without further transportation. However, digitizing the signals in or near receivers may cause radio frequency interference. We suggest that spread spectrum technology can reduce the interference significantly. Moreover, cryogenic ADCs at regulated temperature in receiver dewars may also increase the bandwidth usage and simplify the backend digital signal process with fewer temperature-dependant components. While industrial semiconductor technology continuously reduces transistor power consumption, low power high speed cryogenic ADCs may become a better solution for coherent receivers. To examine the performance of cooled ADCs, first, we design 4 bit 65 nm and 40 nm CMOS ADCs specifically at 10 K temperature, which commonly is the second stage temperature in dewars. While the development of 65 nm and 40 nm CMOS ADCs are still on-going, we estimate the ENOB is 2.4 at 10 GSPS, corresponding to the correlation efficiency, 0.87. The power consumption is less than 20 mW.en_US
dc.language.isoen_USen_US
dc.subjectcoherent receiveren_US
dc.subjectspread spectrumen_US
dc.subjectanalog-to-digital converteren_US
dc.subjectdigitizeren_US
dc.titleCryogenic analog-to-digital converters using spread spectrum technology for coherent receiversen_US
dc.typeProceedings Paperen_US
dc.identifier.doi10.1117/12.924627en_US
dc.identifier.journalMILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND INSTRUMENTATION FOR ASTRONOMY VIen_US
dc.citation.volume8452en_US
dc.citation.spage0en_US
dc.citation.epage0en_US
dc.contributor.department電子工程學系及電子研究所zh_TW
dc.contributor.departmentDepartment of Electronics Engineering and Institute of Electronicsen_US
dc.identifier.wosnumberWOS:000312884000075en_US
dc.citation.woscount0en_US
Appears in Collections:Conferences Paper


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