Delta-sigma modulators employing continuous-time circuits and mismatch-shaped DACs Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/3j333562g

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Delta-sigma modulators are currently a very popular technique for making high-resolution analog-to-digital and digital-to-analog converters. These oversampled data converters have several advantages over conventional Nyquist-rate converters, including an insensitivity to many analog component imperfections, a simpler antialiasing filter and reduced accuracy requirements in the sample and hold. Though the initial uses of delta-sigma modulators were in the audio field, the development of bandpass modulators opened up the application range to radar systems, digital communication systems and instruments which convert IF, or even RF, analog signals directly to digital form. This thesis presents a method used to analyze and synthesize continuous-time delta-sigma modulators for given specifications. A fourth-order prototype continuous-time bandpass delta-sigma modulator employing g[subscript m]-LC resonator structure is demonstrated on a PCB board and measurement results corroborate the theory. To allow the construction of very high performance delta-sigma modulators, this thesis presents an architecture for a multibit DAC constructed from unit elements which shapes element mismatches. Theoretical analysis and simulation shows that this architecture greatly increases the noise attenuation in the band-of-interest and facilitates the use of multibit quantization in delta-sigma modulators. The methods presented in this thesis will allow high-frequency wideband bandpass delta-sigma modulators to be constructed.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome) using ScandAll PRO 1.8.1 on a Fi-6770A in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Submitted by Sergio Trujillo (jstscanner@gmail.com) on 2012-10-22T20:31:42Z No. of bitstreams: 1 ZhangBo1996.pdf: 7679530 bytes, checksum: aa2ffd70bc288a4a811728dbc4e0c79b (MD5)
  • description.provenance : Made available in DSpace on 2012-10-25T17:53:31Z (GMT). No. of bitstreams: 1 ZhangBo1996.pdf: 7679530 bytes, checksum: aa2ffd70bc288a4a811728dbc4e0c79b (MD5) Previous issue date: 1996-04-03
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-10-25T17:53:31Z (GMT) No. of bitstreams: 1 ZhangBo1996.pdf: 7679530 bytes, checksum: aa2ffd70bc288a4a811728dbc4e0c79b (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-10-24T23:12:00Z (GMT) No. of bitstreams: 1 ZhangBo1996.pdf: 7679530 bytes, checksum: aa2ffd70bc288a4a811728dbc4e0c79b (MD5)

Relationships

In Administrative Set:
Last modified: 08/16/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items