電子信息工程專業(yè)專業(yè)英語

1、Unit 3 Electronic System ComponentsLesson 9 Interconnects2022/9/3電子信息工程專業(yè)英語教程2Lesson 9 Interconnects BackgroundsText tour Language in useVocabulary Structure Reading/writing techniques2022/9/3電子信息工程專業(yè)英語教程3Terminology VSWR frequency responsedecibelpad, lead ribbon cableBNCBackgrounds2022/9/3電子信息工程專業(yè)英

2、語教程4Terminology 2022/9/3電子信息工程專業(yè)英語教程5VSWRVoltage Standing Wave Ratio 電壓駐波比2022/9/3電子信息工程專業(yè)英語教程6Frequency response頻率響應(yīng)2022/9/3電子信息工程專業(yè)英語教程7Decibel (dB)decibel 分貝A unit used to express relative difference in power or intensity, usually between two acoustic or electric signals, equal to ten times the c

3、ommon logarithm of the ratio of the two levels.2022/9/3電子信息工程專業(yè)英語教程8Pad , leadPad 焊點(diǎn)，焊盤Lead 引線2022/9/3電子信息工程專業(yè)英語教程9ribbon cable帶狀電纜扁平柔性電纜2022/9/3電子信息工程專業(yè)英語教程10同軸電纜卡環(huán)形接頭BNC 2022/9/3電子信息工程專業(yè)英語教程11Text tour Outline Introduction High-Speed Connector ProblemsCrosstalkLevels of Interconnects2022/9/3電子信息工程

4、專業(yè)英語教程12Interconnect devices are used for interconnecting Performance requirements Tests that indicate signal integrity include Introduction 2022/9/3電子信息工程專業(yè)英語教程13Interconnect effects can play a significant part in the timing and noise characteristics of a circuitHigh-Speed Connector Problems2022/9/

5、3電子信息工程專業(yè)英語教程14caused 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 (dB), Two types of crosstalk :backward crosstalk forward crosstalkCrosstalk can also be single-line or multil

6、ine. To completely understand the crosstalk specifications of a connector, a user needs the following information:Crosstalk2022/9/3電子信息工程專業(yè)英語教程15Level 1: chip pad to package leads, e.g., wire bondsLevel 2: components to circuit board, e.g., PLCC socketLevel 3: circuit board (board-to-board) connecto

7、r, e.g., edge-card for motherboard to daughter board connectionLevel 4: subassembly interconnects, e.g., ribbon cablesLevel 5: subassembly to I/O, e.g., BNC connectorLevel 6: system interconnects, e.g., Ethernet connectorsLevels of Interconnects2022/9/3電子信息工程專業(yè)英語教程16Vocabulary loss, shield, detrimen

8、tal, degradation, ratioStructureReading/writing techniquesLanguage in use2022/9/3電子信息工程專業(yè)英語教程17Vocabulary2022/9/3電子信息工程專業(yè)英語教程18Loss in dictionaryThe act or an instance of losing:失敗One that is lost:損失The power decrease caused by resistance in a circuit, circuit element, or device.功率損耗The amount of a

9、claim on an insurer by an insured.險(xiǎn)損賠償額2022/9/3電子信息工程專業(yè)英語教程19Loss in text Interconnect devices must meet certain performance requirements in most or all of the following categories:Signal integrityPower loss互連器件必須滿足下列大多數(shù)或者全部性能要求：信號(hào)完整性功率損耗2022/9/3電子信息工程專業(yè)英語教程20Loss in use absorption loss 吸收損耗antenna

10、loss 天線損耗aperture loss 孔徑失真conduction loss 傳導(dǎo)損耗contact loss 接觸損耗conversion loss 變換損耗coupling loss 耦合損耗crosstalk loss 串話損耗2022/9/3電子信息工程專業(yè)英語教程21Loss in use distribution loss 配電損耗gross loss 毛損, 總損harmonic loss 諧波損耗insertion loss 插損iron core loss 鐵芯損耗load loss 負(fù)載損耗power mismatch loss 輸入失配損耗propagation

11、(power) loss 傳播(功率)損耗transmission loss 傳輸損耗2022/9/3電子信息工程專業(yè)英語教程22Shield in dictionaryA broad piece of armor 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 s

12、tructure 防護(hù)性裝置或結(jié)構(gòu)A technical safeguard that protects the circuit or unit from the influence of external electric or magnetic sources to produce harmful signal. 屏蔽2022/9/3電子信息工程專業(yè)英語教程23Shield in textElectrical characteristics: contact resistance, inductance and capacitance; voltage and power ratings;

13、 shielding; filtering 電氣特性（接觸電阻，電感和電容，電壓和功率額定值，屏蔽，濾波） 2022/9/3電子信息工程專業(yè)英語教程24Shield in use arc shield 電弧罩baffle shield 隔音板cable shield 電纜套管electrostatic shield 靜電屏蔽ground shield 接地屏蔽radiation shield 防輻射屏蔽2022/9/3電子信息工程專業(yè)英語教程25Detrimental in dictionaryCausing damage or harm; injurious.引起損害的；有害的2022/9/

14、3電子信息工程專業(yè)英語教程26Detrimental in textAn interconnect that must pass the short rise time of a high-speed signal pulse can be detrimental to maintaining signal integrity due to an unwanted reflection. 因?yàn)槌霈F(xiàn)了反射，所以在通過互連路徑傳送高速信號(hào)脈沖時(shí)，短促的上升時(shí)間就會(huì)破壞信號(hào)的完整性。 2022/9/3電子信息工程專業(yè)英語教程27Degradation in dictionaryThe act or

15、process of degrading.降級(jí)The state of being degraded; degeneration.墮落，衰退A decline to a lower condition, quality, or level.退化，下降 position of a compound by stages, exhibiting well-defined intermediate products.降解2022/9/3電子信息工程專業(yè)英語教程28Degradation in dictionaryIn data communications, a deterioration in th

16、e characteristics of a signal for whatever reason.A condition in which the system operates at reduced levels of service. These circumstances are usually caused by unavailability of various equipment units or subsystems.2022/9/3電子信息工程專業(yè)英語教程29Degradation in textSignal integrity is defined by loss of q

17、uality of the input signal. Ideally, the signal at the output of an interconnect should be equal in all characteristics with the signal at the input of the interconnect. In reality, signal degradation occurs. 信號(hào)完整性是指輸入信號(hào)質(zhì)量的損失。理想情況下，互連器件的輸出端信號(hào)和輸入端信號(hào)在所有特性上都完全相同。實(shí)際中會(huì)發(fā)生信號(hào)質(zhì)量的下降。 2022/9/3電子信息工程專業(yè)英語教程30Rat

18、io in dictionaryRelation in degree or number between two similar 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 7/4.2022/9/3電子信息工程專業(yè)英語教程31Ratio in textTests that indicate signal integrity include:Voltage standing wave ratio (VSWR)Frequency responseRise-time of signal edgesCurrent flow能夠反映信號(hào)完整性的測試有：電壓駐波比頻率響應(yīng)信號(hào)邊沿的上升時(shí)間電流2022/9/3電子信息工程專業(yè)英語教程32Ratio in use abunda