Search for dissertations about: "delta sigma"

Showing result 1 - 5 of 37 swedish dissertations containing the words delta sigma.

2. 1. Continuous-Time Delta-Sigma Modulators for Wireless Communication

   Author : Mattias Andersson; Institutionen för elektro- och informationsteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; return-to-zero; A D converter; loop delay; delta-sigma; ADC; CMOS; STF; continuous-time; sigma; delta; filtering; CT; RZ;

   Abstract : The ever increasing data rates in wireless communication require analog to digital converters (ADCs) with greater requirements on speed and accuracy, while being power efficient to prolong battery life. This dissertation contains an introduction to the field and five papers that focus on the continuous-time (CT) Delta-Sigma modulator (DSM) as ADC. READ MORE

4. 2. Wideband Sigma-Delta Modulators

   Author : Xiaolong Yuan; Svante Signell; Jakob Wikner; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sigma-delta modulator; feedforward; reconfigurable; quadrature bandpass filtering; Electronics; Elektronik;

   Abstract : Sigma-delta modulators (SDM) have come up as an attractive candidatefor analog-to-digital conversion in single chip front ends thanks to the continuousimproving performance. The major disadvantage is the limited bandwidthdue to the need of oversampling. READ MORE

5. 3. Silicon Carbide Sigma-Delta Modulatorfor High Temperature Applications

   Author : Ye Tian; Carl-Mikael Zetterling; Ana Rusu; Jerzy Dabrowski; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; silicon carbide SiC ; bipolar; sigma-delta; data conversion; OpAmp; integrated circuit IC ; Informations- och kommunikationsteknik; Information and Communication Technology;

   Abstract : .... READ MORE

6. 4. Modeling and Analysis of Wideband Sigma-Delta Noise Shapers

   Author : Andreas Göthenberg; KTH; []
   Keywords : Data Converters; Oversampling; Sigma-Delta; Modulators; Wideband; Noise Shapers; Sampling Switches; Substrate Noise Coupling;

   Abstract : The continuous evolution of CMOS technologies towards deepsubmicron processes has provided new opportunities forintegration of mixed-signal systems on single monolithicintegrated circuits. In order to find the optimal usage of CMOStechnology and robustness against undesired mixed-signalcouplings, new approaches to CMOS front-end integration areneeded. READ MORE

7. 5. Continuous-Time Delta-Sigma Modulators for Ultra-Low-Power Radios

   Author : Dejan Radjen; Institutionen för elektro- och informationsteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Delta-Sigma; continuous-time; analog-to-digital; ultra-low-power; clock jitter; single operational amplifier; SAR quantizer;

   Abstract : The modern small devices of today require cheap low power radio frequency (RF) transceivers that can provide reliable connectivity at all times. In an RF transceiver, the analog-to-digital converter (ADC) is one of the most important parts and it is also one of the main power consumers. READ MORE