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This series, covering a range of topics from particle optics to modern electronics, deals, in this volume, with recent advances and developments in electromagnetism, speech coding and bandgap narrowing and its effects on the properties of moderately and heavily doped germanium and silicon.
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ADVANCES IN ELECTRONICS AND ELECTRON PHYSICS
VOLUME 82
EDITOR-IN-CHIEF
PETER W. HAWKES Centre National de la Recherche ScientiJique Toulouse, France
ASSOCIATE EDITOR
BENJAMIN KAZAN Xerox Corporation Palo Alto Research Center Palo Alto, California
Advances in
Electronics and Electron Physics EDITEDBY PETER W. HAWKES C E M ESILaboratoire d 'Optique Electronique du Centre National de la Recherche Scienrijque Toulouse, France
VOLUME 82
ACADEMIC PRESS, INC. Harcourt Brace Jovanovich, Publishers Boston San Diego New York London Sydney Tokyo Toronto
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CAD in Electromagnetism OSZKAR BIROAND K. R. RICHTER
............ ................. ............................. 111. Eddy Current Fields . . . . . . . . . . . . . . . , , . . . . . . . . . IV. Waveguides and Cavities. . . . . . . . . . . . . . . . . . . . . . . . V. Galerkin’s Method . . . . . . . . . . . . . . . , . . . . . . . . . . . VI. Application of the Finite Element Method . . . . . . . . . . . . . Acknowledgments.. . . . . . . . . . . . . . . . . . . . . . . . . . . References.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I. Introduction. .
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11. Static Fields
Introduction . . . . . . . . . . . . . . Signal Processing in Speech Coding Speech Coding Systems. . . . . . . . Future Research Directions . . . . . Acknowledgments. . . . . . . . . . . References . . . . . . . . . . . . . . .
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Speech Coding VLADIMIR CUPERMAN
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Bandgap Narrowing and Its Effects on the Properties of 197 Moderately and Heavily Doped Germanium and Silicon SURESH C. JAIN,R. P. MERTENS, A N D K. J. VANOVERSTRAETEN I. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 11. Calculations of BGN in n-Type Silicon and n-Type Germanium . . . . . . . . . . . . . . . . . . . . . . . . . 111. Impurity Concentration Fluctuations and Band Tails . IV. EfTect of Bandgap Narrowing on Optical Properties. .
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V . Summary of Important Results . . . . . . . . . . . . . . . . . . . . Acknowledgments. . . . . . . . . . . . . . . . . . . . . . . . . . . . Appendix . . . . . . . . . . . . . . . . . . . . .