Essays about: "delta-sigma"

Showing result 11 - 15 of 15 essays containing the word delta-sigma.

1. 11.  A Wideband High Dynamic Range Continuous-Time Sigma-Delta ADC for Wireless Applications

   University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)

   Author : Ye Xu; [2010]
   Keywords : ;

   Abstract : In recent years, the research toward the development of high speed and high resolution analog-to-digital converters (ADCs) has been equally driven by the demand of high-speed wire line and wireless communication services. Delta-Sigma ADCs are widely used in wireless applications due to their oversampling and noise shaping characteristics. READ MORE

3. 12. Study on a second-order bandpass Σ∆-modulator for flexible AD-conversion

   University essay from Institutionen för systemteknik

   Author : Hanna Svensson; [2008]
   Keywords : Sigma-Delta; Delta-Sigma; bandpass modulators; flexible ADC;

   Abstract : An important component in many communication system is the digital to analog converter. The component is needed in order to convert real world analog quantities to digital quantities which are easier to process. READ MORE

4. 13. Design and implementation of a decimation filter using a multi-precision multiply and accumulate unit for an audio range delta sigma analog to digital converter

   University essay from Institutionen för systemteknik

   Author : Erik Lindahl; [2008]
   Keywords : decimation; digital filter; FIR; hardware implementation; multi precision; delta sigma;

   Abstract : This work presents the design and implementation of a decimation filter for a three bits sigma delta analog to digital converter. The input is audio with a oversampling ratio of 32. Filter optimization and tradeoffs concerning the design is described. The filter is a multistage filter consisting of two cascaded FIR filters. READ MORE

5. 14. Delta-Sigma Modulation Applied to Switching RF Power Amplifiers

   University essay from Institutionen för systemteknik

   Author : Tobias Andersson; Johan Wahlsten; [2007]
   Keywords : Delta-Sigma modulation; Power Amplifiers; RF; Switching Power Amplifiers;

   Abstract : Background: The task of this thesis is to investigate the possibility of using non-linear high efficiency switching power amplifiers with spectrally efficient varying envelope modulation schemes and, if possible, further investigate such a solution on a high level. The thesis focuses on the theory necessary to understand the technical issues related to power amplifiers and the procedures behind simulating and measuring the characteristics of different power amplifier configurations. READ MORE

6. 15. Modelling and Design of Oversampled Delta-Sigma Noise Sharpers for D/A Conversion

   University essay from Institutionen för systemteknik

   Author : Vikram Singh Parihar; [2005]
   Keywords : Electrical engineering; Oversampled Delta- Sigma Noise shapers; Elektroteknik; elektronik och fotonik;

   Abstract : This thesis demonstrates the high- level modelling and design of oversampled delta- sigma noise shapers for D/A conversion. It presents an overview and study on digital- to- analog converters (DAC) followed by the noise shapers. It helps us to understand how to design a noise shaper model and algorithmic expressions are presented. READ MORE