搜索结果: 1-14 共查到“工学 transmission line”相关记录14条 . 查询时间(0.157 秒)
Resonant Antennas Based on Coupled Transmission-Line Metamaterials
Antenna radiation patterns metamaterials microstrip antennas patch antennas propagation constant
2014/12/8
A novel microstrip patch antenna topology is presented for achieving a dual-band response with arbitrarily closely spaced resonances. This topology is based on a coupled transmission line structure in...
Transmission-Line Metamaterial Design of an Embedded Line Source in a Ground Recess
Antenna radiation patterns metamaterials periodic structures transmission lines
2014/12/8
A transmission-line metamaterial design of a material-embedded electric line source radiating inside a ground recess is investigated. The media embedding the recessed line source are designed such tha...
State variable distributed-parameter representation of transmission line for transient simulations
state-space methods power system transients Transmission line modeling
2010/10/12
In this paper, a distributed-parameter state variable approach is used to calculate transients on transmission lines based on the concept of travelling waves. The method of characteristics for lossles...
Construction and applications of the Dirichlet-to-Neumann operator in transmission line modeling
Dirichlet-to-Neumann operator transmission line modeling
2010/1/11
The Dirichlet-to-Neumann (DtN) operator is a useful tool in the characterization of interconnect structures. In combination with the Method of Moments, it can be used for the calculation of the per-un...
提高广东架空送电线路输送容量研究（Study on Raising Transmission Capacity of Overhead Transmission Line in Guangdong Power Grid ）
架空线路 输送容量 环境温度 跨越距离 正常允许电流 特殊允许电流
2010/8/17
阐述架空导线载流控制条件，分析广东架空送电线路实际运行条件和广东地区多年实测气象参数，制定广东架空线路正常运行允许电流I0，通过风险分析证实现有线路正常载流能力可安全地提高7%以上。在正常允许电流I0的基础上，挖掘运行线路跨越距离裕度，提出架空线路在检修、应急两种特殊运行条件下的允许电流I1、I2及其确定原则，通过对实际线路开展测量和验算，确认电网特殊情况下存在安全增容的可能性，特定线路可以多输送...
南方电网500 kV交流输电线路防雷策略（Research on Anti-lightning Strategy and External Optimization Configuration Principle of 500 kV AC Transmission Line in China Southern Power Grid）
防雷策略 饱和等值盐密法 优化配置
2010/8/17
针对南方电网500 kV交流输电线路故障特点，对几种典型的防雷措施（减小地线保护角、加强线路绝缘水平、降低接地电阻）从适用范围、效果和经济性等方面进行了分析。对不同类型的绝缘子进行了长串人工污秽试验研究，并采用饱和等值盐密法提出了南方电网500 kV交流输电线路外绝缘配置原则；并对不同外绝缘配置方案进行了技术经济比较，推荐了线路外绝缘优化配置方案。
Transmission Line and Equivalent Circuit Models for Plasmonic Waveguide Components
Equivalent circuits optical waveguides parallel plate waveguides plasmons scattering matrices
2015/8/10
Modeling of waveguide junctions using transmission lines and lumped circuit elements is common practice in microwave networks.
Distance Relaying Algorithm for Double-Circuit Transmission Line with Compensation for Reactance Effect under Standard Availability of Measurements
Double-circuit transmission line distance protection fault
2009/7/28
This paper deals with non-pilot distance protection of a double-circuit transmission line. Negative impact of the reactance effect, appearing in measuring a fault loop impedance, on operation of the r...
Optimal Location for Shunt Connected FACTS Devices in a Series Compensated Long Transmission Line
Maximum receiving end power shunt FACTS degree of series compensation
2009/7/28
Shunt FACTS devices are used for controlling transmission voltage, power flow, reducing reactive losses, and damping of power system oscillations for high power transfer levels. In this paper the opti...
Complex Analysis of the Lossy-Transmission Line Theory: A Generalized Smith Chart
Complex analysis losses low-loss approximation
2009/7/28
It has been very usual in the specialized literature to skip the detailed study of the lossy transmission line theory by reducing it to the low-loss approximation. Although this is valid in the most c...
Advances in Fibers and Transmission Line Technology for Long Haul Submarine Systems
Advances Fibers Transmission Line Technology Long Haul Submarine Systems
2015/7/20
We review recent development of optical fibers for submarine networks. Further we discuss how new signal formats and increased bit rates change the requirements for fibers and challenge the balance be...
80 Gb/s InP Mach-Zehnder Modulator Module using Liquid Crystal Polymer (LCP) Transmission Line
Mach-Zehnder Modulator Module Liquid Crystal Polymer (LCP) Transmission Line
2015/7/15
A flexible liquid crystal polymer (LCP) transmission circuit with excellent high frequency performance was applied to a high-speed optical modulator module. We confirmed the error-free operation of an...
Efficient calculations of dispersive properties of photonic crystals using the transmission line matrix method
photonic crystals transmission line matrix (TLM)
2011/4/26
In this paper, we present an analysis of the accuracy and efficiency of different approaches for the simulation of photonic crystals using the transmission line matrix method. The approaches that we p...
Similarity Criteria of EHF Physical Model of Long Distance Transmission Line with Plate Phases
EHF Physical Model Long Distance Transmission Line Plate Phases
2010/12/21
This paper presents a mathematical analysis in order to determine the coefficients of similarity criteria of EHF physical model for the given long distance transmission line. The integral analogue met...