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检索条件"主题词=distributed parameter circuits"

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A Simple Design of Planar Harmonic-Suppressed Filters Using Shunt Open Stubs

A Simple Design of Planar Harmonic-Suppressed Filters Using ...

引用

IEEE circuits and Systems International Conference on Testing and Diagnosis, ICTD

作者： Junsong Ning Zhengxian Luo Shirong Bu School of Opto-Electronic Information University of Electronic Science and Technology Chengdu China

For harmonic suppression, equivalent T-shaped transmission lines are used to replace series connecting transmission lines of conventional planar filters. The added shunt open stubs in the T-shaped lines work like bandstop filters at the unwanted harmonic. The proposed filters have improved stopband rejection and compact size. In this paper, General design equations are given to transform arbitrary series connecting lines of filters into the relevant equivalent T-shaped lines to suppress any unwanted signals. Experiments have been done to validate the design concept.

关键词： Joining processes Transmission line matrix methods Equations Power harmonic filters Planar transmission lines Microwave filters Passband distributed parameter circuits Shunt (electrical) Information filtering

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An InGaAs PIN-diode based broadband traveling-wave switch with high-isolation characteristics

An InGaAs PIN-diode based broadband traveling-wave switch wi...

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Indium Phosphide and Related Materials Conference

作者： Jung Gil Yang Munho Kim Kyounghoon Yang Division of Electrical Engineering School of Electrical Engineering and Computer Science (EECS) Korea Advanced Institute of Science and Technology Daejeon South Korea

A high-isolation broadband traveling-wave switch using InGaAs PIN diodes is proposed. The circuit design and the analysis of the traveling-wave switch based on an artificial transmission line design are described. The newly proposed MMIC switch provides low insertion loss of less than 3.5 dB and high isolation of better than 39 dB from 15 GHz to 70 GHz. The significantly reduced chip size of 1.0 times 0.8 mm 2 including pads has been achieved by using the meandered microstrip lines.

关键词： Switches Indium gallium arsenide Power transmission lines distributed parameter circuits Frequency Communication switching MMICs Impedance Shunt (electrical) Circuit synthesis

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A FDTD method for Nonuniform Transmission Line Analysis Using Yee's-lattice and Wavelet Expansion

A FDTD method for Nonuniform Transmission Line Analysis Usin...

引用

IEEE MTT-S International Microwave Workshop Series (IMWS)

作者： Kazunori Watanabe Toshikazu Sekine Yasuhiro Takahashi Gifu University Gifu Japan

A 1D finite-difference time-domain (FDTD) method for nonuniform transmission line analysis by using wavelet expansion is presented. The approach are based on scaling functions only or on a combination of scaling functions and wavelets leading to a variable mesh griding. The proposed schemes compared to the conventional Yee's FDTD scheme shows a good capability to approximate the exact solution with negligible error for sampling rates approaching the Nyquist limit. A linear tapered transmission line that is one of models of interconnect is analyzed in order to illustrate the application of this method and to demonstrate the advantages over Yee's FDTD scheme with respect to memory requirements and execution time. And to show the stableness, eye diagram analysis for lossy uniform transmission line is shown.

关键词： Finite difference methods distributed parameter circuits Wavelet analysis Integrated circuit interconnections Time domain analysis Transmission lines Signal analysis Voltage Equations Propagation losses

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A new extraction method of characteristic parameters of a coupled transmission line

A new extraction method of characteristic parameters of a co...

引用

IEEE Topical Meeting on Electrical Performance of Electronic Packaging (EPEPS)

作者： Minwoo Kang Daehoon Jang Kwangsik Park Chilhyeun Gwon Kwisoo Kim Jongsik Lim Kwansun Choi Dal Ahn Department of Electrical Communication System Engineering Soonchunhyang University South Korea

This paper suggests a new extraction method of the characteristic parameters of a coupled transmission line, which is structured like a microstrip line. A coupled line coupler that has -20 dB coupling at the center frequency 1.5 GHz is used for the extraction of the characteristic parameters. First, it extracts the characteristic parameters using the simulation results of the coupler. The paper shows the accuracy of this extraction method by comparing the results of EM simulation with the results of circuit simulation using the extracted characteristic parameters.

关键词： Transmission lines Coupling circuits Power transmission lines Circuit simulation Impedance Tellurium Microstrip Planar transmission lines distributed parameter circuits Directional couplers

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Low-impedance and high-Q transmission line for mmw VCO

Low-impedance and high-Q transmission line for mmw VCO

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IEEE Workshop on Signal Propagation on Interconnects (SPI)

作者： You Nomiyama Win Chaivipas Kenichi Okada Akira Matsuzawa Department of Physical Electronics Tokyo Institute of Technology Meguro Tokyo Japan

A transmission line with low impedance and high quality factor is presented in this paper. This transmission line has a ground shield and metal slits unlike conventional transmissions line which has either a ground shield or metal slits. Simulation results shows that the floating metal slits lowers the impedance of the transmission line while maintaining a high quality factor. This transmission line is employed as a resonator of a millimeter voltage controlled oscillator to lower the phase noise.

关键词： Transmission lines Voltage-controlled oscillators Phase noise Power transmission lines Impedance distributed parameter circuits Frequency Voltage Q factor Wireless communication

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A study on transmission planning prioritization using multi-objective evaluation

A study on transmission planning prioritization using multi-...

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IEEE General Meeting Power& Energy Society

作者： Eiji Sakakibara Kiyotaka Matsushita Shinichi Iwamoto Tokyo Electric Power Company Inc. Japan Department of Electrical Engineering and Bioscience Waseda University Tokyo Japan

In the deregulated environment, in order to sustain a regional electricity business, transmission restructuring is necessary. In transmission construction, the system stability, environmental problems and the economy must all be considered. Therefore, the purpose of this paper is to propose a new transmission planning prioritization method using a Pareto optimal set as a multi-objective evaluation. Here, we first consider short circuit capacity, and then evaluate CO 2 emission, transmission losses and construction costs, comprehensively. Finally, we carry out simulations for the IEEJ EAST 30 machine system, and determine the transmission planning priority, to demonstrate the validity of the proposed method.

关键词： Propagation losses Costs Power system planning Electricity supply industry deregulation Power system simulation Power transmission lines distributed parameter circuits Pareto optimization Minimization Circuit stability

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New fault location technique for double-circuit transmission lines based on sparse current measurements

New fault location technique for double-circuit transmission...

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Annual North-American Power Symposium

作者： Ning Kang Yuan Liao Department of Electrical and Computer Engineering University of Kentucky Lexington USA

ISBN: (纸本)9781424444281

This paper presents algorithms to locate faults on a double-circuit transmission line by utilizing sparse current measurements from one or two branches. The branch current is derived as an analytical function of the unknown fault location and fault resistance, and then the fault location can be obtained based on the measured branch currents. The zero-sequence mutual coupling between the two branches of the parallel line is considered. The network data are assumed to be available and quite accurate results have been obtained based on simulation studies.

关键词： Fault location Current measurement Circuit faults Impedance Power transmission lines Transmission line matrix methods Power system reliability Mutual coupling Power system simulation distributed parameter circuits

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Size Reduction and Dispersion/Impedance Engineering with Resonant Type Metamaterial Transmission Lines: Current Status and Future Applications

Size Reduction and Dispersion/Impedance Engineering with Res...

引用

IEEE MTT-S International Microwave Workshop Series (IMWS)

作者： Gerard Siso Marta Gil Francisco Aznar Jordi Bonache Ferran Martin GEMMA/CIMITEC Departament d'Enginyeria Electrica#x00D2 nica Universitat Authnòma de Barcelona Bellaterra Spain

In this paper the most relevant applications derived from dispersion and impedance engineering in resonant type metamaterial transmission lines are highlighted. Essentially, this includes enhanced bandwidth components and dual-band components. Due to the small electrical size of the considered metamaterial resonators, size reduction is also obtained. We will provide some recent results obtained by the authors, and we will also point out future developments.

关键词： Impedance Resonance Metamaterials Transmission lines Bandwidth Frequency Dual band Optical ring resonators Capacitance distributed parameter circuits

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Three dimensional transmission lines and power divider circuits

Three dimensional transmission lines and power divider circu...

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International Conference on Design and Technology of Integrated Systems in Nanoscale Era (DTIS)

作者： Ali Darwish Amin Ezzeddine American University Cairo Cairo Egypt AMCOM Communications Inc. Gaithersburg MD USA

We report the development of a number of novel broadband 3D circuits. We present the performance of a 3D X-band 4-way Wilkinson divider. Excellent performance is also obtained from a delay line, and broadband coupled lines. We also introduce, for embedded transmission lines, a measurement of line losses, and an improved model for analysis and synthesis.

关键词： Power transmission lines distributed parameter circuits Power dividers Dielectric constant Transmission line theory Circuit synthesis Microwave devices Microwave circuits Polyimides Equations

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Discrete wavelet transform and back-propagation neural networks algorithm for fault classification on transmission line

Discrete wavelet transform and back-propagation neural netwo...

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IEEE/PES Transmission and Distribution Conference and Exhibition: Asia and Pacific

作者： C. Pothisarn A. Ngaopitakkul King Mongkut''s Institute of Technology Ladkrabang Bangkok Thailand

ISBN: (纸本)9781424452293

This paper proposes a technique using discrete wavelet transform (DWT) and back-propagation neural network (BPNN) to identify the fault types on single circuit transmission lines. The ATP/EMTP is used to simulate fault signals. The mother wavelet daubechies4 (db4) is employed to decompose high frequency component from these signals. The variations of first scale high frequency component that detect fault are used as an input for the training pattern. The result has shown that the proposed technique gives satisfactory results.

关键词： Discrete wavelet transforms Neural networks Classification algorithms Transmission lines Circuit faults distributed parameter circuits Frequency Fault diagnosis EMTP Circuit simulation

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