Lars Wanhammar – författare

DSP Integrated Circuits establishes the essential interface between theory of digital signal processing algorithms and their implementation in full-custom CMOS technology. With an emphasis on techniques for co-design of DSP algorithms and hardware in order to achieve high performance in terms of throughput, low power consumption, and design effort, this book provides the professional engineer, researcher, and student with a firm foundation in the theoretical as well as the practical aspects of designing high performance DSP integrated circuits. Centered around three design case studies, DSP Integrated Circuits thoroughly details a high-performance FFT processor, a 2-D Discrete Cosine Transform for HDTV, and a wave digital filter for interpolation of the sampling frequency. The case studies cover the essential parts of the design process in a top-down manner, from specification of algorithm design and optimization, scheduling of operations, synthesis of optimal architectures, realization of processing elements, to the floor-planning of the integrated circuit. Details the theory and design of digital filters - particularly wave digital filters, multi-rate digital filters, fast Fourier transforms (FFT's), and discrete cosine transforms (DCT's) Follows three complete "real-world" case studies throughout the book Provides complete coverage of finite word length effects in DSP algorithms In-depth survey of the computational properties of DSP algorithms and their mapping to optimal architectures Outlines DSP architectures and parallel, bit-serial, and distributed arithmetic Presents the design process in a top-down manner and incorporates numerous problems and solutions

ThisbookwaswrittenforuseinacourseatLinkopingUniversityandtoaidthe .. electricalengineertounderstandanddesignanalogfilters.Mostoftheadvanced mathematicsrequiredforthesynthesisofanalogfiltershasbeenavoidedby providingasetofMATLABfunctionsthatallowssophisticatedfilterstobe designed.MostofthesefunctionscaneasilybeconvertedtorununderOctaveas well. Thefirstchaptergivesanoverviewoffiltertechnologies,terminology, andbasicconcepts.Approximationofcommonfrequencyselectivefilters andsomemoreadvancedapproximationsarediscussedinChapter2.The reader is recommended to compare the standard approximation with respecttothegroupdelay,e.g.,Example2.5,andlearntousethecor- sponding MATLAB functions. Geometrically symmetric frequency tra- formationsarediscussedaswellasmoregeneralsynthesisusingMATLAB functions. Chapter 3 deals with passive LC filters with lumped elements. The reader may believe that this is an outdated technology. However, it is stillbeingusedandmoreimportantlythetheorybehindalladvancedfilter structures is based on passiveLC filters. This is also the case for digital and switched-capacitor filters.The reader is strongly recommended to carefully study the principle of maximum power transfer, sensitivity to element errors, and the implications of Equation (3.26). MATLAB fu- tionsareusedforthesynthesisofladderandlatticestructures.Chapter4 deals with passive filters with distributed elements. These are useful for veryhigh-frequencyapplications,butalsointhedesignofcorresponding wavedigitalfilters. InChapter5,basiccircuitelementsandtheirdescriptionasone-,two-,and three-portsarediscussed. Chapter 6 discusses first- and second-order sections using single and multiple amplifiers. The reader is recommended to study the implication ofthe gain-sensitivityproductandthetwo-integratorloop.Chapter7d- cusses coupled forms and signal scaling, and Chapter 8 discusses various methods for immitance simulation. Wave active filters are discussed in v vi Preface Chapter9andleapfrogfiltersinChapter10.Finally,tuningtechniquesare discussedinChapter11. Textwithasmallerfontiseithersolvedexamplesormaterialthatthereader mayskipoverwithoutlosingthemainpoints.

ThisbookwaswrittenforuseinacourseatLinkopingUniversityandtoaidthe .. electricalengineertounderstandanddesignanalogfilters.Mostoftheadvanced mathematicsrequiredforthesynthesisofanalogfiltershasbeenavoidedby providingasetofMATLABfunctionsthatallowssophisticatedfilterstobe designed.MostofthesefunctionscaneasilybeconvertedtorununderOctaveas well. Thefirstchaptergivesanoverviewoffiltertechnologies,terminology, andbasicconcepts.Approximationofcommonfrequencyselectivefilters andsomemoreadvancedapproximationsarediscussedinChapter2.The reader is recommended to compare the standard approximation with respecttothegroupdelay,e.g.,Example2.5,andlearntousethecor- sponding MATLAB functions. Geometrically symmetric frequency tra- formationsarediscussedaswellasmoregeneralsynthesisusingMATLAB functions. Chapter 3 deals with passive LC filters with lumped elements. The reader may believe that this is an outdated technology. However, it is stillbeingusedandmoreimportantlythetheorybehindalladvancedfilter structures is based on passiveLC filters. This is also the case for digital and switched-capacitor filters.The reader is strongly recommended to carefully study the principle of maximum power transfer, sensitivity to element errors, and the implications of Equation (3.26). MATLAB fu- tionsareusedforthesynthesisofladderandlatticestructures.Chapter4 deals with passive filters with distributed elements. These are useful for veryhigh-frequencyapplications,butalsointhedesignofcorresponding wavedigitalfilters. InChapter5,basiccircuitelementsandtheirdescriptionasone-,two-,and three-portsarediscussed. Chapter 6 discusses first- and second-order sections using single and multiple amplifiers. The reader is recommended to study the implication ofthe gain-sensitivityproductandthetwo-integratorloop.Chapter7d- cusses coupled forms and signal scaling, and Chapter 8 discusses various methods for immitance simulation. Wave active filters are discussed in v vi Preface Chapter9andleapfrogfiltersinChapter10.Finally,tuningtechniquesare discussedinChapter11. Textwithasmallerfontiseithersolvedexamplesormaterialthatthereader mayskipoverwithoutlosingthemainpoints.

This textbook provides comprehensive coverage for courses in the basics of design and implementation of digital filters. The book assumes only basic knowledge in digital signal processing and covers state-of-the-art methods for digital filter design and provides a simple route for the readers to design their own filters.