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1、Unit 3 Electronic System Components,Lesson 9 Interconnects 电子信息工程专业英语教程任治刚 主编 电子工业出版社 ,2019/6/16,电子信息工程专业英语教程,2,Lesson 9 Interconnects,Backgrounds Text tour Language in use Vocabulary Structure Reading/writing techniques,2019/6/16,电子信息工程专业英语教程,3,Terminology VSWR frequency response decibel pad, lead
2、ribbon cable BNC,Backgrounds,2019/6/16,电子信息工程专业英语教程,4,Terminology,2019/6/16,电子信息工程专业英语教程,5,VSWR,Voltage Standing Wave Ratio 电压驻波比,2019/6/16,电子信息工程专业英语教程,6,Frequency response,频率响应,2019/6/16,电子信息工程专业英语教程,7,Decibel (dB),decibel 分贝 A unit used to express relative difference in power or intensity, usuall
3、y between two acoustic or electric signals, equal to ten times the common logarithm of the ratio of the two levels.,2019/6/16,电子信息工程专业英语教程,8,Pad , lead,Pad 焊点，焊盘,Lead 引线,2019/6/16,电子信息工程专业英语教程,9,ribbon cable,带状电缆 扁平柔性电缆,2019/6/16,电子信息工程专业英语教程,10,同轴电缆卡环形接头,BNC,2019/6/16,电子信息工程专业英语教程,11,Text tour,Outl
4、ine Introduction High-Speed Connector Problems Crosstalk Levels of Interconnects,2019/6/16,电子信息工程专业英语教程,12,Interconnect devices are used for interconnecting Performance requirements Tests that indicate signal integrity include ,Introduction,2019/6/16,电子信息工程专业英语教程,13,Interconnect effects can play a s
5、ignificant part in the timing and noise characteristics of a circuit,High-Speed Connector Problems,2019/6/16,电子信息工程专业英语教程,14,caused by inductive and capacitive coupling between contacts and/or lines feeding contacts. can be expressed in a percentage of the voltage swing of the signal, or in decibels
6、 (dB), Two types of crosstalk : backward crosstalk forward crosstalk Crosstalk can also be single-line or multiline. To completely understand the crosstalk specifications of a connector, a user needs the following information:,Crosstalk,2019/6/16,电子信息工程专业英语教程,15,Level 1: chip pad to package leads, e
7、.g., wire bonds Level 2: components to circuit board, e.g., PLCC socket Level 3: circuit board (board-to-board) connector, e.g., edge-card for motherboard to daughter board connection Level 4: subassembly interconnects, e.g., ribbon cables Level 5: subassembly to I/O, e.g., BNC connector Level 6: sy
8、stem interconnects, e.g., Ethernet connectors,Levels of Interconnects,2019/6/16,电子信息工程专业英语教程,16,Vocabulary loss, shield, detrimental, degradation, ratio Structure Reading/writing techniques,Language in use,2019/6/16,电子信息工程专业英语教程,17,Vocabulary,2019/6/16,电子信息工程专业英语教程,18,Loss in dictionary,The act or a
9、n instance of losing: 失败 One that is lost: 损失 The power decrease caused by resistance in a circuit, circuit element, or device. 功率损耗 The amount of a claim on an insurer by an insured. 险损赔偿额,2019/6/16,电子信息工程专业英语教程,19,Loss in text,Interconnect devices must meet certain performance requirements in most
10、 or all of the following categories: Signal integrity Power loss 互连器件必须满足下列大多数或者全部性能要求： 信号完整性 功率损耗 ,2019/6/16,电子信息工程专业英语教程,20,Loss in use,absorption loss 吸收损耗 antenna loss 天线损耗 aperture loss 孔径失真 conduction loss 传导损耗 contact loss 接触损耗 conversion loss 变换损耗 coupling loss 耦合损耗 crosstalk loss 串话损耗,2019/
11、6/16,电子信息工程专业英语教程,21,Loss in use,distribution loss 配电损耗 gross loss 毛损, 总损 harmonic loss 谐波损耗 insertion loss 插损 iron core loss 铁芯损耗 load loss 负载损耗 power mismatch loss 输入失配损耗 propagation (power) loss 传播(功率)损耗 transmission loss 传输损耗,2019/6/16,电子信息工程专业英语教程,22,Shield in dictionary,A broad piece of armor
12、made of rigid material and strapped to the arm or carried in the hand for protection against hurled or thrusted weapons. 盾 A person or thing that provides protection. 后盾 A protective device or structure 防护性装置或结构 A technical safeguard that protects the circuit or unit from the influence of external e
13、lectric or magnetic sources to produce harmful signal. 屏蔽,2019/6/16,电子信息工程专业英语教程,23,Shield in text,Electrical characteristics: contact resistance, inductance and capacitance; voltage and power ratings; shielding; filtering 电气特性（接触电阻，电感和电容，电压和功率额定值，屏蔽，滤波）,2019/6/16,电子信息工程专业英语教程,24,Shield in use,arc s
14、hield 电弧罩 baffle shield 隔音板 cable shield 电缆套管 electrostatic shield 静电屏蔽 ground shield 接地屏蔽 radiation shield 防辐射屏蔽,2019/6/16,电子信息工程专业英语教程,25,Detrimental in dictionary,Causing damage or harm; injurious. 引起损害的；有害的,2019/6/16,电子信息工程专业英语教程,26,Detrimental in text,An interconnect that must pass the short ri
15、se time of a high-speed signal pulse can be detrimental to maintaining signal integrity due to an unwanted reflection. 因为出现了反射，所以在通过互连路径传送高速信号脉冲时，短促的上升时间就会破坏信号的完整性。,2019/6/16,电子信息工程专业英语教程,27,Degradation in dictionary,The act or process of degrading. 降级 The state of being degraded; degeneration. 堕落，衰
16、退 A decline to a lower condition, quality, or level. 退化，下降 Decomposition of a compound by stages, exhibiting well-defined intermediate products. 降解,2019/6/16,电子信息工程专业英语教程,28,Degradation in text,Signal integrity is defined by loss of quality of the input signal. Ideally, the signal at the output of a
17、n interconnect should be equal in all characteristics with the signal at the input of the interconnect. In reality, signal degradation occurs. 信号完整性是指输入信号质量的损失。理想情况下，互连器件的输出端信号和输入端信号在所有特性上都完全相同。实际中会发生信号质量的下降。,2019/6/16,电子信息工程专业英语教程,29,Ratio in dictionary,Relation in degree or number between two simi
18、lar things. 比率 The relation between two quantities expressed as the quotient of one divided by the other: 比例 The ratio of 7 to 4 is written 7:4 or 7/4.,2019/6/16,电子信息工程专业英语教程,30,Ratio in text,Tests that indicate signal integrity include: Voltage standing wave ratio (VSWR) Frequency response Rise-tim
19、e of signal edges Current flow 能够反映信号完整性的测试有： 电压驻波比 频率响应 信号边沿的上升时间 电流,2019/6/16,电子信息工程专业英语教程,31,Ratio in use,abundance ratio 丰度 amplification ratio 放大率 aspect ratio 长宽比; 纵横比 availability ratio 可用率; 利用率; 资用率 energy efficiency ratio 能量效率比 faculty-student ratio 师生比 limit ratio 限幅比 power standing wave ratio 功率驻波比 signal-noise ratio 信噪比,2019/6/16,电子信息工程专业英语教程,32,Ends!,