检索结果-内蒙古大学图书馆

ANALYSIS OF A 4 PARALLEL WIRE ANTENNA SYSTEM BY THE SPATIAL FOURIER-TRANSFORM METHOD

IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY 1991年第3期33卷 215-223页

作者： JAREM, J Electrical and Computer Engineering Department University of Alabama Huntsville USA

The electromagnetic fields and currents associated with an infinite four parallel wire transmission line are analyzed through the use of the spatial Fourier transform method. The near and far electromagnetic fields and currents that are associated with frill and gap voltage excitations are analyzed by the Fourier transform method. Possible VHF compact range applications of a four parallel wire antenna system are discussed, including the possibility of simulating an off-axis EM plane wave by the appropriate adjustment of the exciting voltage phase on each of the four parallel wires. Comparisons of Fourier transform method solutions with method-of-moments (MOM) solutions and finite-difference-time-domain (FD-TD) solutions are made for an infinite four parallel wire antenna system.

关键词： Wire Fourier transforms Anechoic chambers Electromagnetic fields message-oriented middleware Electromagnetic scattering Electromagnetic analysis Voltage Moment methods Finite difference methods

来源：评论

学校读者我要写书评

暂无评论

PARASITIC IMPEDANCE ANALYSIS OF DOUBLE BONDING WIRES FOR HIGH-FREQUENCY INTEGRATED-CIRCUIT PACKAGING

引用

IEEE MICROWAVE AND GUIDED WAVE LETTERS 1995年第9期5卷 296-298页

作者： YUN, SK LEE, HY Department of Electronics Engineering Ajou University Suwon South Korea

Double bonding wires separated by an internal angle have been characterized in a wide range of frequencies using the Method of Moments with the incorporation of the ohmic resistance, For a 30 degrees internal angle, the calculated total reactance is more than 35% less than that of a single bonding wire due to the negative mutual coupling effect of different current directions, The radiation effect at high frequencies has been observed decreasing the mutual inductance between the angled bonding wires, whereas for parallel bonding wires it greatly increases the mutual inductance.

关键词： Impedance Bonding Wires Integrated circuit packaging Frequency Inductance Moment methods Mutual coupling Radiation effects message-oriented middleware

来源：评论

学校读者我要写书评

暂无评论

The Fast Illinois Solver Code: Requirements and scaling properties

引用

IEEE COMPUTATIONAL SCIENCE & ENGINEERING 1998年第3期5卷 19-23页

作者： Song, JM Chew, WC Univ Illinois Dept Elect & Comp Engn Ctr Computat Electromagnet Urbana IL 61801 USA

To solve large-scale computing and scattering problems and to expand knowledge about iterative solvers, the authors developed the Fast Illinois Solver Code, which uses the multilevel fast multipole algorithm. They dis... 详细信息

关键词： Integral equations Computational electromagnetics Electromagnetic scattering MLFMA Large-scale systems Differential equations Sparse matrices Radar scattering message-oriented middleware Frequency

来源：评论

学校读者我要写书评

暂无评论

WIDE-BAND CHARACTERIZATION OF MUTUAL COUPLING BETWEEN HIGH-DENSITY BONDING WIRES

引用

IEEE MICROWAVE AND GUIDED WAVE LETTERS 1994年第8期4卷 265-267页

作者： LEE, HY Department of Electronics Engineering Ajou University Suwon South Korea

Mutual coupling between grounded bonding wires for high density IC packaging has been characterized over a wide frequency range using the Method of Moments in consideration of the ohmic and radiation losses. At high frequencies, the mutual inductance greatly increases due to the radiation-enhanced mutual coupling effect. For 500-mum-long bonding wires, a minimum 200-mum separation is required to maintain a 20-dB crosstalk level at low frequencies. This wideband analysis will be useful for designing packages and interconnection layouts of high frequency IC's with increased packaging density and operating frequency.

关键词： Wideband Mutual coupling Bonding Wires Frequency Integrated circuit packaging Inductance message-oriented middleware Impedance Crosstalk

来源：评论

学校读者我要写书评

暂无评论

EFFECT OF LOW METER IMPEDANCE ON LOOP-ANTENNA BASED MEASUREMENTS OF MAGNETIC-FIELDS

引用

IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY 1992年第2期34卷 136-138页

作者： ROMAN, J UNGVICHIAN, V NEELAKANTA, PS Department of Electrical Engineering Florida Atlantic University Boca Raton FL USA

In using a simple loop-antenna for the measurement of low frequency magnetic fields, systematic errors (of the order of 20%) could arise if a low impedance (50-OMEGA) meter is substituted in lieu of a high impedance type. Nonconsideration of this error in recommended measurement practices and procedures (such as the SAE specification) for radiated emissions is indicated. Theoretical results indicating the systematic error computed over a frequency range of 30 Hz to 25 KHz are presented. Supporting experimental data concerning the loop impedance measurements and the difference in loop-antenna output voltage noticed with low and high impedance meters confirm the theoretical elucidations.

关键词： Magnetic field measurement Impedance measurement Voltage Apertures Magnetic shielding Antenna measurements message-oriented middleware Wire Frequency Equivalent circuits

来源：评论

学校读者我要写书评

暂无评论

ADAPTIVE MESH REFINEMENT FOR BOUNDARY ELEMENT METHOD AND ITS APPLICATION TO STRIPLINE ANALYSIS

引用

IEEE TRANSACTIONS ON MAGNETICS 1990年第2期26卷 783-786页

作者： PARK, DK AHN, CH LEE, SY RA, JW Department of Electrical Engineering Korea Advanced Institute of Science and Technology Seoul South Korea

Adaptive mesh refinements are incorporated in the boundary element method (BEM) for accurate calculation of electromagnetic fields. Refinements are based on local error estimates of the calculated potential and its normal derivative on the boundaries. Differences between two adjacent node values are used for simple local error estimates. Also, error at the middle of each element is calculated from an integral equation. To demonstrate its applicability, this adaptive scheme is applied to striplines with edge singularity.< >

关键词： Adaptive mesh refinement Boundary element methods Stripline Integral equations Boundary conditions Differential equations Computer errors Electromagnetic fields message-oriented middleware Sparse matrices

来源：评论

学校读者我要写书评

暂无评论

MEASURING THE QUANTUM CORRECTION AT ZERO BIAS IN METAL-OXIDE-METAL DIODE NOISE

引用

IEEE JOURNAL OF QUANTUM ELECTRONICS 1982年第1期18卷 17-19页

作者： VANDERZIEL, A SUTHERLAND, AD Department of Electrical Engineering University of Florida Gainesville FL USA

According to van der Ziel's interpretation of Tucker's calculation of the noise and admittance of metal-oxide-metal (MOM) diodes, these devices, when operating at high frequencies (100 GHz) and low temperatures (2 K), show a transition from quantum thermal noise at zero bias to shot noise at ±1 mV bias. By slowly modulating the bias of the MOM diode between -1 mV and +1 mV, mixing and amplifying the noise, passing it through a quadratic detector and then LF filtering the detected MOM noise power, one can display the MOM diode noise power on a cathode ray oscillograph or strip-chart recorder as a function of bias, and thus calibrate the thermal noise at zero bias against the shot noise at higher bias.

关键词： Noise measurement Diodes Low-frequency noise message-oriented middleware Gunshot detection systems Admittance Frequency Temperature Detectors Filtering

来源：评论

学校读者我要写书评

暂无评论

A METHOD-OF-MOMENTS SOLUTION TO THE TWISTED-PAIR TRANSMISSION-LINE

引用

IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY 1995年第1期37卷 121-126页

作者： CHAMBERLIN, K KOMISAREK, K SIVAPRASAD, K Department of Electrical and Computer Engineering University of New Hampshire Durham NH USA

A Method-of-Moments (MoM) approach to modeling the unshielded, twisted-pair transmission line is developed and validated. The approach described has proven capable of predicting the operational performance characteristics of the twisted-pair transmission line, and can be implemented to analyze attenuation and cross talk under fault conditions. The model is validated for an unfaulted transmission line by comparison with measured data as well as the classical, distributed-parameter model.

关键词： Moment methods Transmission lines message-oriented middleware Impedance Wires Conductors Maxwell equations Transmission line measurements Telephony Data communication

来源：评论

学校读者我要写书评

暂无评论

MANEUVER OPTION MANAGER - AUTOMATED SIMPLIFICATION OF COMPLEX AIR-TRAFFIC-CONTROL PROBLEMS

引用

IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS 1992年第5期22卷 1047-1057页

作者： NIEDRINGHAUS, WP MITRE Corporation McLean VA USA

Maneuver option manager (MOM) is part of an air traffic control automation project, sponsored by the Federal Aviation Administration (FAA), in which the computer for the first time assumes responsibility for separation assurance between en route aircraft. MOM's purpose is to detect and simplify certain complex air traffic control problems, identified here as sets of interrelated potential pairwise separation problems. MOM determines which of six types of maneuver options is available (free of possible separation problems) for each aircraft. MOM simplifies a complex problem by protecting (for future use) an available maneuver option for one or more of the involved aircraft. Routinely, a single maneuver option resolves multiple pairwise problems. MOM's actions cause complex problems to be iteratively broken down into independent, smaller, and less complex problems.

关键词： Air traffic control Aircraft Automation Humans message-oriented middleware FAA Aerospace control Automatic control Project management Protection

来源：评论

学校读者我要写书评

暂无评论

A BOUNDARY INTEGRAL METHOD FOR PROPAGATION PROBLEMS IN INTEGRATED OPTICAL STRUCTURES

引用

IEEE PHOTONICS TECHNOLOGY LETTERS 1995年第7期7卷 777-779页

作者： YANG, W GOPINATH, A Department of Electrical Engineering University of Minnesota Minneapolis MN USA

A boundary integral method is presented for the study of wave propagations in waveguiding structures that are considered difficult for the beam propagation method (BPM). We have demonstrated with 2-D simulations, that structures of large angle bends and arbitrary reflections can be easily modeled without excessive computational demand. This method provides a powerful tool for analyzing radiation loss, scattering, crosstalk and other characteristics in complex integrated photonic devices.

关键词： Integral equations Optical propagation Integrated optics Green function Optical scattering Optical crosstalk Particle scattering message-oriented middleware Computational modeling Finite difference methods

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：