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本书内容涵盖电子、通信、电信及计算机等相关专业方向，具有较强的先进性和实用性。本书内容分为两部分，共18个单元。专业阅读部分包括14个单元：电路原理、嵌入式系统、集成电路、信号与系统、数字信号处理、数字图像处理、通信原理、移动通信、光通信、电信网络、电磁学、微波通信、计算科学基础、新技术趋势。实践指导部分包括4个单元：专业学习方法、研究方法、求职指导及沟通技巧。本书提供配套的电子课件PPT、词汇表、习题参考答案、教学大纲、教学指南等。本书可作为电子工程、通信工程、电信工程等专业大学本（专）科生的科技英语和专业英语课程教学用书，也可供相关领域的工程技术人员学习参考。

PartⅠ  Academic Reading
Unit 1  Electric Circuits	2
1.1  Circuit Elements	2
1.2  Basic Laws	4
1.2.1  Ohm’s Law	4
1.2.2  Kirchhoff’s Laws	6
1.3  Circuit Analysis	8
1.3.1  Nodal Analysis	8
1.3.2  Mesh Analysis	10
Exercises	12
Unit 2  Embedded Systems	15
2.1  Introduction to Embedded Systems	15
2.1.1  Early Forms of Embedded Systems	15
2.1.2  Birth and Evolution of Modern Embedded Systems	16
2.1.3  Contemporary Embedded Systems	18
2.2  Structure of an Embedded System	21
2.2.1  Hardware Components	22
2.2.2  Software Components	23
2.3  Microprocessors Versus Microcontrollers	26
2.3.1  Microprocessor Units	26
2.3.2  Microcontroller Units	27
2.3.3  RISC Versus CISC and RISC Architectures	28
2.3.4  Programmer and Hardware Models	28
Exercises	30
Unit 3  Integrated Circuits	33
3.1  Introduction	33
3.2  PN Junction and Diode	38
3.3  Transistor	43
3.3.1  BJT	43
3.3.2  FET	44
3.4  FPGA	48
3.4.1  FPGA Versus Microcontroller	48
3.4.2  What Is a Programmable Gate Array?	48
3.4.3  How Do You Program an FPGA?	49
Exercises	53
Unit 4  Signals and Systems	55
4.1  Introduction to Signals	55
4.2  Frequency Response of LTI Systems	59
4.3  Sampling Theorem	63
Exercises	67
Unit 5  Digital Signal Processing	70
5.1  Introduction to Digital Signal Processing	70
5.2  Structures for Discrete-Time Systems	73
5.3  Filter Design Techniques	77
Exercises	81
Unit 6  Digital Image Processing	84
6.1  Components of an Image Processing System	84
6.2  Examples of Fields That Use Digital Image Processing	87
6.3  Introduction to Pattern Recognition	91
Exercises	94
Unit 7  Principles of Communications	97
7.1  Electrical Communication Systems	97
7.2  Modulation and Multiplexing	101
7.2.1  Baseband Transmission	101
7.2.2  Broadband Transmission	102
7.2.3  Multiplexing	104
7.3  Digital Communication Techniques	106
7.3.1  Data Conversion	106
7.3.2  Elements of a Digital Communication System	109
Exercises	112
Unit 8  Mobile Communication	115
8.1  From 1G to 5G	115
8.1.1  A Brief History of Wireless Technologies	115
8.1.2  1G — First Generation Mobile Communication System	115
8.1.3  2G — Second Generation Mobile Communication System	116
8.1.4  3G — Third Generation Mobile Communication System	117
8.1.5  4G — Fourth Generation Mobile Communication System	118
8.1.6  5G — Fifth Generation Mobile Communication System	118
8.1.7  Summary	119
8.2  Mobile Networks	120
8.2.1  Main Components	121
8.2.2  Radio Access Network	122
8.2.3  Mobile Core	123
Exercises	127
Unit 9  Optical Communication	129
9.1  Optical Communication Systems	129
9.1.1  Light Wave Communication in Free Space	129
9.1.2  Fiber-Optic Communication System	131
9.1.3  Applications of Fiber Optics	132
9.2  Passive Optical Networks	134
9.2.1  The PON Concept	134
9.2.2  PON Technologies	135
Exercises	138
Unit 10  Telecommunication Networks	141
10.1  A Telephone Network	141
10.1.1  Basic Telephony	141
10.1.2  Telephone System	143
10.2  Internet Telephony	148
10.2.1  VoIP Fundamentals	148
10.2.2  Internet Phone Systems	150
Exercises	152
Unit 11  Electromagnetics	156
11.1  Introduction of Electromagnetics	156
11.1.1  Importance of Electromagnetics	156
11.1.2  A Brief History of Electromagnetics	157
11.1.3  Applications of Electromagnetism	159
11.2  Engineering Electromagnetics and Waves	164
11.2.1  Lumped Versus Distributed Electrical Circuits	164
11.2.2  Electromagnetic Components	166
11.2.3  Maxwell’s Equations and Electromagnetic Waves	167
Exercises	171
Unit 12  Microwave Communication	174
12.1  Microwave Concepts	174
12.1.1  Microwave Frequencies and Bands	174
12.1.2  Benefits of Microwaves	175
12.1.3  Disadvantages of Microwaves	176
12.2  Microwave Communication Systems	179
12.2.1  Transmitters	179
12.2.2  Receivers	181
12.2.3  Transmission Lines	183
12.2.4  Antennas	184
Exercises	185
Unit 13  Basics of Computer Science	188
13.1  What Is a Computer?	188
13.1.1  Computer Hardware	189
13.1.2  Computer Software	191
13.1.3  Categories of Computers	193
13.2  Computer Networks	197
13.2.1  Network Hardware	197
13.2.2  Network Software	202
13.2.3  Internet Security	205
Exercises	212
Unit 14  New Technology Trends	215
14.1  Promising Opportunities for Artificial Intelligence	215
14.1.1  AI for Augmentation	215
14.1.2  AI Agents on Their Own	218
14.2  Ten Predictions on the Future of Machine Learning	221
14.3  Big Data	226
14.3.1  Definitions of Big Data	226
14.3.2  Big Data Management Architecture	229
14.3.3  Performance Matters	231
14.3.4  Traditional and Advanced Analytics	233
14.4  Quantum Internet	236
14.4.1  Introduction	236
14.4.2  Preliminaries	237
14.4.3  Quantum Internet Functionalities	241
14.4.4  Possible Applications	244
14.4.5  Future Directions	246
Exercises	251
PartⅡ  Practical Guidance
Unit 15  Learning Skills	255
Exercises	259
Unit 16  Research Skills	261
Exercises	264
Unit 17  Careers in ECE	265
Exercises	271
Unit 18  Communication Skills	272
Exercises	275
References	277

在信息科技日新月异的时代，工程师已经成为一个全球性的职业，需要与国内外同行进行英语交流。能够用专业英语清晰地读写、解释技术和商业文件，并能够将其理解的工程概念有效地传达给同行、主管和公众，是工程师和专业技术人员的必备技能。专业英语课程的学习和训练将培养工科大学生阅读和翻译专业英语文献的能力、专业英语写作能力、专业英语交流能力和基本的专业科研能力，以提高学生在全球领域的求职竞争力。
本书内容分为两部分。第一部分是Academic Reading，共包括14个单元，分别是Electric Circuits、Embedded Systems、Integrated Circuits、Signals and Systems、Digital Signal Processing、Digital Image Processing、Principles of Communications、Mobile Communication、Optical Communication、Telecommunication Networks、Electromagnetics、Microwave Communication、Basics of Computer Science、New Technology Trends，涵盖了电子、通信和计算机等相关专业方向。每个单元由课文、词汇、注释、习题4个部分组成。课文选材广泛，既包括专业基础内容，也包括最新的研究热点；词汇部分按文中出现的顺序列出相关专业术语，并尽量保持术语在文中的固定搭配形式，便于学生更好地掌握术语的含义和用法；注释部分包括课文中的特色句型，并配有翻译；习题部分提供多种形式的练习，包括专业词汇释义、英汉互译、专业材料阅读总结和实用语法，力求学以致用。
第二部分是Practical Guidance，共包括4个单元，分别是Learning Skills、Research Skills、 Careers in ECE、Communication Skills，旨在培养学生的学习能力、科研能力、求职能力和沟通能力。每个单元包括相关主题的实用指导与建议，以及针对性训练。
本书可作为电子工程、通信工程、电信工程等专业大学本（专）科生的科技英语和专业英语课程教学用书。本书能够满足大多数高校32～48学时的教学计划安排，教师可根据学生的专业方向和课程的学时适当选取教学内容。本书提供配套的电子课件PPT、词汇表、习题参考答案等，请登录华信教育资源网（www.hxedu.com.cn）注册后免费下载，也可联系本书编辑（wangxq@ phei.com.cn，010-88254113）索取。教学大纲、教学指南，请发送电子邮件至作者（271435904@qq.com）索取。
本书由多年担任专业英语课和专业双语课、全英语课教学的教师编写。由古海云主持制定编写大纲，并对全书进行统稿，古海云和任蕾担任主编。其中，Unit 1～3、Unit 7～13、Unit 15～18由古海云编写，Unit 4～6和Unit 14由任蕾编写。
工程师是一个需要终向学习的职业，随着新技术的不断涌现，我们的学习、工作和生活方式也都在与时俱进。“授之以鱼，不如授之以渔”，希望本书在能力培养方面做出的努力对读者有所助益。

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