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模-数转换器

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Based on the relation between modal amplitude and phase in the mode conversion of the few mode fiber, a novel configuration of an asymmetric biconical fiber and a fiber mode converter is presented to realize the nonreciprocal propagation in optical fibers. Preliminary feasibility is demonstrated both theoretically and experimentally.

基于少模光纤中模式转换的振幅和相位关系,提出采用不对称双锥光纤与光纤模式转换器的组合结构实现光纤中非互易传输的技术构思,从理论和实验上进行了初步的可行性论证。

In this kind of converter,the speed and precision of comparator and digital-to-analog converter greatly affect the performance of the whole system.

其中,比较器和数模转换器的精度和速度极大地限制了整个系统的性能。

An optional 32-bit NCO/mixer in complex mode provides frequency upconversion and the dual DAC output produces a complex Hilbert Transform pair.

TI 公司的DAC56883G是高性能的16位800MSPS双路数模转换器,非常适合3G和4G通信系统的应用。

When the power supply operates under standby mode, a Fly-back converter is used to provide standby power (5V/1.5A).

当电源模组在待机态时,使用返驰式转换器提供5V/1.5A 待机电源。

This new LumiSil LO grade, offered at a 58 gsm basis weight and a 53 micron caliper, is designed for label converters in Latin America, Europe and Asia that use glassine to make die-cut, pressure-sensitive roll labels with paper and film face stocks.

这种新的LumiSil劳年级,开设了58的GSM基础体重和53微米卡尺,是专为标签转换器,在拉丁美洲,欧洲和亚洲使用玻璃纸,使模切,压力敏感的辊标签纸和胶卷脸股票。

In this circuit, sensing resistor and senseFET were used to sense the inductor's current.

1引言电感电流的检测在电流模PWM DC-DC转换器中发挥着重要的作用。

As the pioneer and technology leader for fiber optic in Taiwan, Baycom now are producing and design kinds of Coupler, WDM, Connecter, Converter, Transceiver, Optical Switch, Patch cord, Pigtail, Collimator, etc.

目前冠德光电已拥有完整之上、中、下游产品线,包含了各式光耦合器,分波多工器,光连接器,光电转换器,光传输模组,光纤光栅,跳接线,光纤引线,准直器等光通讯元件。

Using staircase concatenation method SCM,the optimum coupling conditions were achieved for wedge-shaped fiber wedge angle,cylindrical endface lens curvature radius,semimajor axis of planar lightwave circuit elliptical field,aspect ratio of planar lightwave circuit elliptical field,misalignment tole.

在多量子阱-平面光波光路前置模斑转换器和不加模斑转换器的情况下,用阶梯串联法数值模拟并优化设计了楔形光纤-平面光波光路间最佳耦合参量:楔形光纤楔角45°、端面圆柱透镜曲率半径2。

Its complete product line, fiber-optic network, both external power supply type also has built-in power type, both stand-alone also has the standard 19 rack-mount products, covering Ethernet, Fast Ethernet, Gigabit Ethernet and ATM network used in fiber-optic transceivers, fiber optic switches and fiber optic modems and other equipment. early in 1999, netLINK first time in Greater China to launch a technology leader in the industry have the adaptive function of 10/100 Fast Ethernet Media Converter (HTB -1100 series), and its excellent cost performance by customers. October 24, 2001 to 27 in Shanghai 2001 International Electronic Products Exposition and fifty-eighth session of Electronics Show , the Haitong exhibited Netlink Technologies Limited and the exclusive agent of Nufiber company, CTS Corporation a full range of fiber-optic network products, as well as Intelligent Network standard 16-slot rack-mount fiber optic media converter, RS-232/422/485 up mode / single-mode fiber converter and other new products, attracted the attention of the industry and well received by the audience and the fiber-optic network customers.

其光纤网络产品系列齐全,既有外置电源型也有内置电源型,既有独立式也有标准19机架式产品,涵盖以太网、快速以太网、千兆以太网和ATM网络用的光纤收发器、光纤交换机及光纤数据机等各种设备。1999年初,netLINK首先推出当时在大中华区业界处于技术领先的有10/100自适应功能的快速以太网媒体转换器(HTB-1100系列),并以其优异的性能价格比广受客户的欢迎。2001年10月24日至27日在上海举行的2001国际电子产品博览会和第五十八届电子产品展览会上,海通科技有限公司展出了netLINK和独家代理的Nufiber公司、CTS公司全系列的光纤网络产品以及智能网管型16槽标准机架式的光纤媒体转换器、RS-232/422/485至多模/单模光纤转换器等新产品,深深吸引了业界的注意和广受观众和光纤网络客户的欢迎。

Firstly, we research the Vlasov antenna with reflector mainly. A new method to calculate the radiation of the antenna is founded with Vectorial Theory of Diffraction, and the corresponding program is made. The reflective characters of Vlasov antenna are studied with Moment Methods, and the results show that the total reflected energy is less than 0.25%. The radiation patterns of the antenna are analyzed, and the formulas to estimate the wave beam parameters and to design the antenna are provided. The feasibility of radiating high-order modes by Vlasov antenna is also discussed and verified. The hermetization of the Vlasov antenna is researched and the results show that with such kinds of hermetization the antenna can work under gigawatt level. The design of the mode converter from TEM to TMoi is studied, which is useful when the TEM coaxial mode is radiated by Vlasov antenna. At last, the flared-end Vlasov antenna is also discussed.

在Vlasov天线方面:用矢量绕射理论建立了天线辐射场的计算模型并编写了计算程序,该程序计算结果在主瓣上与实验测量吻合良好,近旁瓣也基本一致;利用矩量法计算了天线的反射系数,表明该天线有较小的反射,总的能量反射小于0.25%;详细分析了天线的辐射特性,给出了天线辐射波束相关参数的估算公式和天线设计公式;进一步研究和论证了Vlasov天线辐射高阶轴对称模的可行性;对天线的密封方式和功率容量进行了讨论,结果表明在不需很大密封罩的情况下可以获得GW级的功率容量;为了用Vlasov天线辐射同轴TEM模,研究了TEM-TM_(01)模式转换器的设计,得到了一些基本规律;最后,介绍和分析了带有锥形喇叭的Vlasov天线。

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推荐网络例句

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了,请告诉我,我会帮助你摆脱困境,真的,请联系我啦!

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放,就是一个这样的例子。

Well, Jerry would rattle off all the details of that movie.

那么,杰瑞会急促背诵那部电影所有细节。