通信电子电路(英文版高等学校信息领域全英文课程十三五系列规划教材) 下载 pdf 百度网盘 epub 免费 2025 电子版 mobi 在线

本书是 来华留学英语授课品牌课程的配套教材。全书共6章，主要内容包括通信电子电路理论基础、射频放大器、高频振荡器、幅度调制解调与混频、角度调制与解调和锁相环路等。全书较系统地介绍了通信电路与系统的核心内容。其特点是以基本概念和基本理论为基础，介绍电路的工作原理及其应用设计，使读者了解从电路分析到设计的过程。

Contents

Chapter l

Introduction to basic knowledge of communication electronic circuits 1

1.1 Introduction to communication system 1

1.1.1 Composition ofcommunication system 1

1.1.1.1 Signal source 1

1.1.1.2 Transmitting equipment 2

1.1.1.3 Channel 2

1.1.1.4 Noise 2

1.1.1.5 Receiving equipment 2

1.1.1.6 Destination 2

1.1.2 Classification ofcommunication systems 3

1.2 Basic components of communication system 4

1.2.1 Transmitting unit 4

1.2.2 Channel 6

1.2.2.1 Ground wave 6

1.2.2.2 Sky wave 7

1.2.2.3 Space wave 7

1.2.3 Receiving equipment 8

1.3 Division of wireless communication frequency bands 10

1.4 Frequency-selective circuits 13

1.5 LC resonant circuits 13

1.5.1 Equivalent conversion of series parallel circuit 14

1.5.2 Basic characteristics of LC parallel resonant circuit 15

1.5.2.1 LC parallel resonant circuit without load 15

1.5.2.1.1 Resonance condition of the parallel resonant circuit 15

1.5.2.1.2 Resonant characteristics 16

1.5.2.1.3 Impedance characteristic curves 17

1.5.2.1.4 Frequency-selective characteristics of LC parallel resonant circuit 18

1.5.2.1.5 Bandwidth 19

1.5.2.1.6 Rectangular coefficient 21

1.5.2.2 LC parallel resonant circuit with load 22

1.5.3 Basic characteristics of LC series resonant circuit 23

1.5.3.1 LC series resonant circuit without load 23

1.5.3.1.1 Resonance condition of series resonant circuit 23

1.5.3.1.2 Resonant characteristics 23

1.5.3.1.3 Energy relationships 24

1.5.3.1.4 Impedance characteristic curves 25

1.5.3.1.5 Frequency-selective characteristics of LC series resonant circuit 26

1.5.3.2 LC series resonant circuit with load 26

1.6 Solid filters 27

1.6.1 Quartz crystal filters 27

1.6.2 Ceramic filters 28

1.6.3 Surface acoustic wave filters 29

1.7 Impedance conversion networks 31

1.7.1 Autotransformer circuit 31

1.7.2 Mutual transformer circuit 33

1.7.3 Capacitor divider circuit 34

1.7.4 Partial access of the signal source 35

1.8 LC frequency matching networks 35

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