Functional Processing of Delta-Sigma Bit-Stream [Hardcover]

This book discusses non-conventional digital signal processing based on direct processing of delta-sigma modulated bit-stream. The main attributes of low-pass delta-sigma analog-to-digital converters are: simple and inexpensive design, robustness of design to component tolerances, low-power consumption, high input impedance, high resolution (more than 20 bits) and possibility of direct arithmetic operation on its bit-stream. The author presents a number of theoretical and simulation results related to newly proposed linear and non-linear circuits such as delta-sigma adders, delta-sigma rectifiers, delta-sigma RMS and AGC circuits, delta-sigma frequency deviation meters, etc. The proposed circuits are not application limited and can be used in instrumentation, sensor application, bio-medical application, communications, etc.

• Presents novel linear and nonlinear circuits for direct processing of delta-sigma modulated bit-stream;
• The proposed circuits are supported by theoretical and simulation results;
• Recommends potential applications of the proposed circuits, and proposes ideas for further investigation.

Chapter 1. Basics of Low-Pass Modulation.- Chapter 2. Linear Processing of Delta-Modulated Bit-Stream.- Chapter 3. Rectification of a Delta-Sigma Modulated Signal.- Chapter 4. Multiplication of Two ?-? Bit-Streams.- Chapter 5. Digital Architecture for ?-? RMS-to-DC Converter.- Chapter 6. Companding Circuits and Systems Based on ?-? Modulation.- Chapter 7. A ?-? Digital Stereo Multiplexing-Demultiplexing System.- Chapter 8. ?-? Digital Amplitude Modulation System.- Chapter 9. ?-? Methods for Frequency Deviation Measurement of a Known Nominal Frequency.- Chapter 10. ?-? Automatic Gain Controller.- Chapter 11. ?-? Integrator and Differentiator Circuits.