Then novel circuit structure of bi - directional voltage mode ( based on forward converter ) inverters with high frequency link , are proposed , which is constituted of input cycloconverter , high frequency transformer , output cycloconverter , input and output filter ; the circuit topologies family of this bi - directional voltage mode inverters with high frequency link include six circuit topologies , such as push pull - full wave mode , push pull - full bridge mode , half bridge - full wave mode , half bridge - full bridge mode , full bridge - full wave mode , and full bridge - full bridge mode etc . taking full bridge - full bridge mode circuit as an example , principle of uni - polarity phase shifting controlled bi - directional voltage mode inverters with high frequency link is introduced 本文首先论述了dc / ac逆变技术的应用前景及发展现状。基于正激forward变换器的双向电压源型高频环节逆变器电路结构,由输入周波变换器、高频变压器、输出周波变换器、以及输入、输出滤波器构成;双向电压源高频环节逆变器电路拓扑族,包括推挽全波式、推挽桥式、半桥全波式、半桥桥式、全桥全波式、全桥桥式六种电路。
In microstrip pin switch design , we use the circuit simulation method , firstly we use full - wave analysis method to extract s matrix of passive components ; and then we use ads to analysis and optimize the entire circuits . the test result shows good agreement of the simulation result 在研究方法上,利用电路分析的方法,由全波分析软件生成无源部分的s参数,然后将其结果导入到电路仿真软件中,实际设计并制作了ka波段微带单刀三掷pin开关,设计结果很好的证明了仿真过程的可行性。
The increasing of single channel capacities and evolution of optical networks topology , from simple point - to - point to intelligent optical networks , call for strict demands to optical filters . in this paper , the crucial technologies of optical filters such as interleaver , optical digital filter , fused biconical taper all - wave coupler as well as polarization - pump combiner have been studied experimentally and theoretically , which include : 1 . a new process , cascaded fbt ( fused biconical taper ) with precise control as well as strict interference arm length difference , is proposed for the first time to our knowledge 单信道速率不断提高以及网络拓扑由单一的点对点传输向可上下载的环网和可动态选择波长路由的智能型格形光网络演进，对光滤波器的常规性能指标、时域特性和动态可调谐特性提出了更加苛刻的要求，鉴于此，本论文全面研究了全光纤熔锥型奇偶交错滤波技术、数字光滤波技术、基于g - t全通滤波器的奇偶交错滤波技术以及熔锥型全波耦合器和偏振泵浦合波器。
A microstrip array is designed to meet the needs of the technical specifications . a hybrid method with the full wave , fft and biconjugate gradient ( bcg ) is used to calculate the current distributions on the microstrip . the simulated results show that the method can improve the analysis efficiency and speed up the calculation speed 研制了符合技术指标的微带天线阵列，设计中将传统的全波分析方法与快速付立叶变换( fft )和双共轭梯度( bcg )法结合起来，用于分析微带天线的电流分布，改进了计算方法，加快了计算速度。
This dissertation only considers the signal ’ s distortion by interconnect , such as delay , reflection , discontinuity of microstrip , crosstalk and simultaneous switching noise , and so on . nowadays , there are some simulation software in pcb level , but they are lack of the well ability of modeling . in order to simulate the interconnect accurately , we have to make use of three - dimension full wave analysis method , whose disadvantage is low speed in computing , but is competent for developing rules in high - speed designs 目前也有一些针对这些噪声的高速pcb板级仿真软件,但它们都缺乏详尽的建模能力,特别是当频率逐渐提高和电路板日益复杂后,更是显得无能为力,要精确地对互连结构进行分析,三维全波仿真器似乎不可缺少,其缺点就是速度慢,对整板仿真很难实现,但非常适用于规则开发,而这正好是本文除了建模与仿真方法研究外另一个重点。
The stability output second harmonic generation ( shg ) experiment results of single - longitudinal mode and multi - longitudinal mode with long cavity were explained reasonably with these rate equations . the high polarization of fundamental wave in the isotropic laser media nd : yag with type - i critical phase - matching lbo was studied with the rate equations including polarization of fundamental light . using the polarization function of lbo , a quartz full - wave plate was introduced into the cavity , a kind of birefringent filter by considering the combination of the polarization function of the type - i critical phase - matching doubling frequency crystal lbo and the quartz whole - wave plate was constructed 将腔内多纵模倍频速率方程推广应用到准三能级蓝光激光器中，分析了一个纵模、两个纵模、多个纵模时的噪声情况，合理地解释了实验中激光器单纵模运转以及长腔多纵模运转时稳定输出的实验现象，同时利用该速率方程分析了以各向同性激光晶体nd : yag为工作物质，类临界相位匹配lbo为倍频晶体的蓝光激光器中基频光偏振特性，合理利用类临界相位匹配lbo倍频晶体的偏振特性与引入的石英晶体全波片构成双折射滤光片，通过选单频来抑制噪声，获得了蓝光低噪声的稳定输出。
The circuit topologies family of voltage mode ac - ac mode ac / ac converters with high frequency link include eight circuit topologies , such as single forward mode , interleaved - forward mode , push pull - full wave mode , push pull - full bridge mode , half bridge - full wave mode , half bridge - full bridge mode , full bridge - full wave mode , and full bridge - full bridge mode etc . the circuit topologies family of current mode ac - ac mode ac / ac converters with high frequency link include single four - quadrant power switch mode , push - pull mode , half - bridge mode , and full - bridge mode circuits . taking full bridge - full bridge mode circuit as an example , principle of uni - polarity phase shifting controll is introduced 电压源交?交型高频环节ac ac变换器电路拓扑族，包括单正激式、并联交错正激式、推挽全波式、推挽桥式、半桥全波式、半桥桥式、全桥全波式、全桥桥式八种电路；电流源交?交型高频环节ac ac变换器电路拓扑族，包括单四象限功率开关式、推挽式、半桥式、全桥式四种电路。
On the whole , the main loop draws on the design idea of the full - wave boosting c - dump converter and meets design requirements of power converter . the control loop takes a high speed , high performance tms320lf2407 dsp chip as the control center , so it simplifies peripherals . the control software takes place of hardware circuit to implement the majority of functions , which is designed by means of c and assembly mixed programming 从整体上看，本文设计的主回路充分借鉴了全波升压式c一dump变换器的设计思想，技术可行，满足了电力转换器的设计要求;控制回路的设计以一片高速高性能的tms320lf2407dsp芯片为核心，外围配置简单，控制软件采用c和汇编语言混合编程的设计方法，取代硬件实现了大多数功能，基本达到了单芯片控制的设计目标。
Abstract : the uni - polarity phase - shifted controlled voltage mode ac / ac converters with high frequency ac link based on forward converters are firstly proposed and deeply investigated . this kind of converters is constituted of input cycloconveter , high frequency transformer , output cycloconverter , input and output filters . it includes full bridge - full wave mode and full bridge - full bridge mode topologies , the former is suit for low output voltage field and the later is suit for high output voltage field 这类变换器由输入周波变换器、高频变压器、输出周波变换器、以及输入、输出滤波器构成，包括全桥全波式、全桥桥式两种电路，前者适用于低压输出变换场合，后者适用于高压输出变换场合。
