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Delta-sigma modulators employing con...

Zhang, Bo.

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

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Delta-sigma modulators employing continuous-time circuits and mismatch-shaped DACs./
Author:	Zhang, Bo.
Description:	160 p.
Notes:	Source: Dissertation Abstracts International, Volume: 57-06, Section: B, page: 3952.
Contained By:	Dissertation Abstracts International57-06B.
Subject:	Engineering, Electronics and Electrical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9634082

Delta-sigma modulators employing continuous-time circuits and mismatch-shaped DACs.
Zhang, Bo.

Delta-sigma modulators employing continuous-time circuits and mismatch-shaped DACs. - 160 p.

Source: Dissertation Abstracts International, Volume: 57-06, Section: B, page: 3952.

Thesis (Ph.D.)--Oregon State University, 1996.

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 rangle to radar systems, digital communication systems and instruments which convert IF, or even RF, analog signals directly to digital form.Subjects--Topical Terms:

626636
Engineering, Electronics and Electrical.

Delta-sigma modulators employing continuous-time circuits and mismatch-shaped DACs.
LDR:02314nam 2200253 a 45 001 935905
005 20110510
008 110510s1996 eng d
035 $a (UnM)AAI9634082
035 $a AAI9634082
040 $a UnM $c UnM
100 1 $a Zhang, Bo. $3 1057919
245 1 0 $a Delta-sigma modulators employing continuous-time circuits and mismatch-shaped DACs.
300 $a 160 p.
500 $a Source: Dissertation Abstracts International, Volume: 57-06, Section: B, page: 3952.
502 $a Thesis (Ph.D.)--Oregon State University, 1996.
520 $a 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 rangle to radar systems, digital communication systems and instruments which convert IF, or even RF, analog signals directly to digital form.
520 $a This thesis presents a method used to analyze and synthesize continuous-time delta-sigma modulators for given specifications. A fourth-order prototype continuous-time bandpass delta-sigma modulator employing g$\sb{\rm 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.
590 $a School code: 0172.
650 4 $a Engineering, Electronics and Electrical. $3 626636
650 4 $a Engineering, System Science. $3 1018128
690 $a 0544
690 $a 0790
710 2 0 $a Oregon State University. $3 625720
773 0 $t Dissertation Abstracts International $g 57-06B.
790 $a 0172
791 $a Ph.D.
792 $a 1996
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9634082