Essays about: "sigma delta"

Showing result 16 - 20 of 41 essays containing the words sigma delta.

1. 16. Investigation of Mechanisms for Spur Generation in Fractional-N Frequency Synthesizers

   University essay from Elektroniksystem; Tekniska högskolan

   Author : Sohail Imran Saeed; [2012]
   Keywords : DDSM; Digital Delta Sigma Modulator; EFM; Error Feedback Modulator; PLL Phase Locked Loop; Fractional N Frequency Synthesizer; Spur; Spurs;

   Abstract : With the advances in wireless communication technology over last two decades, the use of fractional-N frequency synthesizers has increased widely in modern wireless communication applications due to their high frequency resolution and fast settling time. The performance of a fractional-N frequency synthesizer is degraded due to the presence of unwanted spurious tones (spurs) in the output spectrum. READ MORE

3. 17. Interface Between Process Equipment And Process Bus for Light Weight Testing Of Protection Functions

   University essay from KTH/Industriella informations- och styrsystem

   Author : Zeeshan Ali Khurram; [2012]
   Keywords : ;

   Abstract : The technological advancements in the substation automation give rise to many new challenges for the engineers. The IEC 61850 standard de nes the most advanced techniques towards the digital substation development. It describes the communication mappings for the substation automation of both conventional and digital substations. READ MORE

4. 18. Measurement of dynamic parameters of Delta-Sigma ADC

   University essay from Avdelningen för elektronik, matematik och naturvetenskap

   Author : Yixiang Zhao; Hao Niu; [2012]
   Keywords : DSP; Delta-sigma converter; Dynamic parameters; Evaluation Module; Matlab.;

   Abstract : In present day, digital signal processing (DSP) is a popular technology and widely used in many fields. There have increasing number of applications that need high resolution converters. Therefore, analog-to-digital converters play a major role in DSP, and a well-performed ADC will enhance the performance of a certain system. READ MORE

5. 19. Design of an all-digital, reconfigurable sigma-deltamodulator

   University essay from Elektroniksystem; Tekniska högskolan

   Author : Syed Asmat Ali Shah; Sohaib Ayaz Qazi; [2012]
   Keywords : ;

   Abstract : This thesis presents a model of reconfigurable sigma-delta modulator. These modulators areintended for high speed digital Digital to Analog Converters. The modulators are intendedto reduce complexity of current steering DACs and also considered as a front end of dataconverters. READ MORE

6. 20. High-Speed Hybrid Current mode Sigma-Delta Modulator

   University essay from Elektroniksystem; Tekniska högskolan

   Author : Balakumaar Baskaran; Hari Shankar Elumalai; [2012]
   Keywords : Current mode Sigma Delta Modulator; Leslie-Singh Architecture; Switched Current Integrator; Folded Cascode Integrator; Current mode Flash ADC; High Speed Latched Comparator; Cascode Current Mirrors;

   Abstract : The majority of signals, that need to be processed, are analog, which are continuous and can take an infinite number of values at any time instant. Precision of the analog signals are limited due to influence of distortion which leads to the use of digital signals for better performance and cost. READ MORE