000000335 001__ 335
000000335 005__ 20260410124445.0
000000335 0247_ $$2DOI$$a10.6083/M4K935GP
000000335 037__ $$aETD
000000335 245__ $$aInter-pulse interval based mixed signal representations
000000335 260__ $$bOregon Health and Science University
000000335 269__ $$a2008
000000335 336__ $$aDissertation
000000335 502__ $$bPh.D.
000000335 502__ $$gComputer Science & Electrical Engineering (sunsetting)
000000335 520__ $$aThis research presents the development and analysis of inter‑pulse‑interval (IPI) techniques for converting analog voltages to pulse streams and back to analog form. An asynchronous, clock‑free IPI architecture was implemented on a fabricated MOSIS 0.35 μm CMOS chip, and design details and test results are reported. Low‑power variants of the IPI circuits were examined and shown to consume significantly less power than conventional methods such as pulse‑width modulation and sigma‑delta conversion, without reducing sampling rate. Distortion inherent to IPI conversion is analyzed and shown to be mitigated by increasing sampling rate. The IPI approach demonstrates robustness to high‑frequency attenuation and suitability for ultra‑wideband transmission, enabling applications in ultra‑low‑power wireless and biomedical sensors.
000000335 540__ $$fCC BY
000000335 542__ $$fIn copyright - single owner
000000335 650__ $$aPulse$$024923
000000335 6531_ $$aanalog electronic systems
000000335 6531_ $$aanalog
000000335 6531_ $$apulse modulation (electronics)
000000335 6531_ $$alow power
000000335 691__ $$aSchool of Medicine$$041369
000000335 692__ $$aDepartment of Science and Engineering$$041447
000000335 7001_ $$aRavi, Sanjay$$uOregon Health and Science University$$041354
000000335 7201_ $$aHammerstrom, Dan$$uPortland State University$$041357$$7Personal$$eAdvisor
000000335 8564_ $$9c4d49662-d34f-4c0a-9fa2-af0d19199e45$$s1486789$$uhttps://digitalcollections.ohsu.edu/record/335/files/336_etd.pdf$$ePublic$$2c0b86abfd34bcfeb5a6d3ad0c60cde69$$31
000000335 901__ $$a<p>These documents are archival records. They are retained for historical reference only. </p><p><b>Need an accessible version? Use the ‘Get Accessible Copy’ link above.</b></p>
000000335 905__ $$a/rest/prod/n0/09/w2/31/n009w231s
000000335 909CO $$ooai:digitalcollections.ohsu.edu:335$$pstudent-work
000000335 956__ $$aGet Accessible Copy$$uhttps://ohsu.libwizard.com/f/requestaccessibledocument
000000335 980__ $$aTheses and Dissertations