CONTENTS · Part 2

DEVICES AAND P SIMPLE C R U CIRCUITS . Introduction . Classification of Metals, Conductors and Semiconductors . Intrinsic Semiconductor . Extrinsic Semiconductor . . p-n Junction . . Semiconductor diode . Application of Junction Diode as a Rectifier . Special Purpose p-n Junction Diodes . Junction Transistor . Digital Electronics and Logic Gates . Integrated Circuits A IF N C TEE CHAPTER FIFTEEN CCCC I OMMUNICATION I OMMUNICATION S S S S Y E YSTEMS Y E YSTEMS . Introduction . Elements of a Communication System . Basic Terminology Used in Electronic Communication Systems . . Bandwidth of Signals . . Bandwidth of Transmission Medium . . Propagation of Electromagnetic Waves xiv . Modulation and its Necessity . Amplitude Modulation . Production of Amplitude Modulated Wave . . Detection of Amplitude Modulated Wave A ITIO MA N ADDITIONAL INFORMATION IO A IT MA N ADDITIONAL INFORMATION C S A I E APPENDICES W A S ANSWERS PHY BBIBLIOGRAPHY IINDEX IINDEX xv