# Environmental Electromagnetics, 2000. CEEM 2000. Proceedings. Asia-Pacific Conference on

## Filter Results

Displaying Results 1 - 25 of 97
• ### Proceedings. Asia-Pacific Conference on Environmental Electromagnetics. CEEM'2000 (IEEE Cat. No.00EX402)

Publication Year: 2000
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• ### Author index

Publication Year: 2000, Page(s):xviii - xxi
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• ### EM scattering by rectangular conducting flat plates with thin uniaxial anisotropic materials

Publication Year: 2000, Page(s):213 - 216
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In this paper, according to the equivalence principles, high frequency approximation and boundary conditions, a method has been developed to deal with the EM scattering by a rectangular conducting flat plate coated with uniaxial anisotropic radar absorbing material (RAM). The simple but effective method is available to the system of RCS prediction in which the large complex targets are modeled by ... View full abstract»

• ### The test of electromagnetic field radiated by electrostatic discharge (ESD) from the real charged human body in the office

Publication Year: 2000, Page(s):412 - 416
Cited by:  Papers (3)
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A customised ultra-wide band E-field probe and H-field probe with wide band oscilloscope were used to test the electromagnetic field radiated from electrostatic discharge (ESD). Many tests were carried out by real charged human body discharge to the ground. The results show that the electric field in 10 cm by a human holding a metal pen with a potential of 2 kV discharge to ground is about 410 V/m... View full abstract»

• ### A method-of-moments approach to EM environment assessment nearby high-voltage transmission lines

Publication Year: 2000, Page(s):179 - 184
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A moment method analysis is presented in this paper for computing the electrical field intensity in the surrounding space of a high-voltage multiconductor transmission line above the ground. In this analysis, the number of conductors, and the shape of cross-section of lines are assumed to be arbitrary. As a result, this formulation and its corresponding computer program would be applicable to the ... View full abstract»

• ### A frequency spectrum model of the intermodulation products generated by paging transmitters

Publication Year: 2000, Page(s):285 - 291
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The present paper presents a frequency spectrum model analytic method of the intermodulation products generated by paging transmitters. A frequency spectrum model and its simulation frequency spectrum of nineteen intermodulation products, which are generated by different kinds of paging transmitters, are shown. All these above could be used by the spectrum manager to identify the intermodulation i... View full abstract»

• ### Radiation of wire buried in a lossy half space

Publication Year: 2000, Page(s):65 - 68
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A wire is buried in a lossy half-space. The finite-difference time domain (FDTD) is used to calculate the radiation pattern of the wire. One of the key technologies is near- to far-zone transformation proposed by K. Demarest, the other is contour integral model of a thin wire proposed by A. Taflove. The PML absorption boundary condition is used for truncation of FDTD lattices View full abstract»

• ### Analysis of the field within bounded wave simulator with a large test object in the working volume

Publication Year: 2000, Page(s):433 - 437
Cited by:  Papers (1)
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A bounded wave simulator is an efficient broad bandwidth illuminator and has been widely used in simulating the EMP pulse propagating in free space with a plane wave model. A test object in the working volume will cause field distortion. In this paper, the FDTD method is used to calculate the field distributions when a test object is situated in the bounded wave simulator or in a radiated plane wa... View full abstract»

• ### Influence of the loaded network on electromagnetic scattering characteristic from slots

Publication Year: 2000, Page(s):207 - 212
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Studying electromagnetic scattering from a plane conductor containing slots terminated by microwave network is of great importance to some practical problems. In this paper, based on the original work, the influences of the terminated microwave-network on electromagnetic scattering characteristic of slots are studied. We also pay attention to different practical application cases. Results are give... View full abstract»

• ### Electromagnetic compatibility test for aircraft system

Publication Year: 2000, Page(s):408 - 411
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The electromagnetic compatibility (EMC) test for an aircraft system has no available and official standards or regulations in China. In connection with EMC test for a certain aircraft and its electric subsystems, we put forward a test program for aircraft AC/DC power supply system characteristics, electromagnetic emission, electromagnetic susceptibility, and electromagnetic environment and antenna... View full abstract»

• ### Study on the elimination of surface wave by metal fences

Publication Year: 2000, Page(s):174 - 178
Cited by:  Papers (3)
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The microstrip antenna is a low-profile planar structure and is inexpensive compared with other types of antennas due to the ease of manufacture. However, patch-antenna designs have some limitations such as restricted bandwidth, low gain, and a decrease in radiation efficiency due to surface wave modes. Surface wave modes in microstrip substrates may cause the undesired energy losses and the reduc... View full abstract»

• ### The evaluation of the electromagnetic emission from high-speed railway by pantograph and network parameters

Publication Year: 2000, Page(s):279 - 284
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This paper gives the curves of pantograph and network parameters vs. speed by calculation with perfected typical mathematical model first, then predicts the electromagnetic emission level of Jing-hu high-speed electric railway according to the interrelationship between the electromagnetic emission and the parameters of the pantographs and networks View full abstract»

• ### Representations of electric field between two inclined conductor boards

Publication Year: 2000, Page(s):61 - 64
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The formulation E=U/d is traditionally used in the measurement of a GTEM cell, which is derived from two parallel boards capacitor. However, the basic structure of a GTEM cell is two inclined conductor boards. More accurate formulation is required and is mentioned in several papers. In this paper calculation formulation is deduced after investigating three models of inclined conductor boards and t... View full abstract»

• ### Development on waveguide cell for generating standard field

Publication Year: 2000, Page(s):427 - 431
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In this paper, the development of the theory and a design scheme for a waveguide cell for generating a standard electromagnetic field are presented, The mathematical description of the electromagnetic field in a waveguide cell is improved. Should the impedance of each part of the waveguide cell system match well, the wave in the waveguide cell is a travelling wave. Thus, a quasi-uniform calibratin... View full abstract»

• ### An experimental research on EMI filters capability in controlling EMP

Publication Year: 2000, Page(s):301 - 304
Cited by:  Papers (1)
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In an EMP filter there must be some suppressing components, such as TVS (transient voltage suppressor) or MOV (metal oxide varistor). They play a very important role in controlling transients into a certain level. On the other hand, both of TVS and MOV have their defects, such as the frangible overload capability, huge transient energy may cause EMP filters' failure. We have investigated some EMI ... View full abstract»

• ### A study on a reduced crosstalk for the design of “CAT 6” high speed data transmission modular jack

Publication Year: 2000, Page(s):20 - 23
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In this paper, a method of canceling and suppressing differential mode crosstalk noise signals caused by nonuniform coupling between two transmission lines in UTP (unshielded twisted pair) modular jacks is discussed. Differential mode crosstalk noise signals in balanced transmission lines in UTP modular jacks were suppressed by inserting auxiliary capacitances between balanced transmission line pa... View full abstract»

• ### The consideration of some problems of lightning protection and earthing in telecom center

Publication Year: 2000, Page(s):374 - 377
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In order to reduce or avoid human and installation damage by lightning, a lot of lightning protection and earthing techniques have been invented. The IEC publication 61024-1 Structure against direct lightning' and China state standard GB 50057 Design specification of lightning protection in structure' are the main guidance for structure against direct lightning in China. Due to the amount of pre... View full abstract»

• ### Analysis of the emittivity of a chirally shielded cable

Publication Year: 2000, Page(s):338 - 339
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The analysis of the emittivity of a chirally shielded cable is presented. An E-polarized cylindrical wave, coming from the centre of the cylinder, incides onto the chiral medium resetting in a coupling between TMz and TEz waves. The analytical expression of the shielding effectiveness in order to evaluate the emittivity has been derived and validated by numerical simulations View full abstract»

• ### Comparison of backscattering from cylinders with different cross section

Publication Year: 2000, Page(s):203 - 206
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Shaping for targets is a main technology of radar cross section (RCS) reduction. In this paper the RCS of several different cross section cylinders are predicted, and the comparison between them is also presented. The conclusion from the comparison is helpful for very low observation designs, such as stealth aircraft View full abstract»

• ### Test and study of impact of electrified railway on audio-video program production

Publication Year: 2000, Page(s):402 - 407
| | PDF (384 KB)

Through testing and analyzing the impact caused by the electrified railway on audio-video program production, this paper indicates that the electrified railway will cause obvious impact on the audio-video system, especially the audio frequency, within a certain distance. The interference is mainly electromagnetic radiation coupling interference. Under the condition of bad earthing, static inductio... View full abstract»

• ### Computer-aided design of microstrip antenna array

Publication Year: 2000, Page(s):170 - 173
| | PDF (180 KB)

The design and manufacture of microstrip array antennas critically rely on computer-aided design (CAD) software tools. When the operating frequency is high, the full wave analysis is required. However, mutual coupling can be ignored for the majority of arrays. Therefore, the integrated analysis is not always necessary. In this paper, the full wave analysis is taken on the 2×2 subarray module... View full abstract»

• ### A mathematical model for ground voltage fluctuation in PCBs

Publication Year: 2000, Page(s):100 - 104
Cited by:  Papers (3)
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In this paper, the ground bounce (GB) effect in PCBs is characterized and presented in both the power/ground and the trace/ground configurations. A generalized 2-D transmission line equation (GTLE) model is used to solve the problems. Simulation results confirm that GB is induced as a result of the resonant behavior. In certain situations, GB gives rise to white noise in parts of the PCB structure View full abstract»

• ### The implementation of a simple local matched load in FDTD computation of microstrip circuits

Publication Year: 2000, Page(s):274 - 278
| | PDF (244 KB)

A kind of simple local matched load (LML) derived from the concept of unsplit PML is presented and implemented in the FDTD computation of microstrip circuits. Since it is used below the metal strip of the microstrip locally, it is convenient to fit the complex circuits that have multi-branch structures. The difference equations in LML have the same form with those in the background medium, so it i... View full abstract»

• ### Suspended stripline and Ka band integrated mixer

Publication Year: 2000, Page(s):57 - 60
Cited by:  Papers (1)
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An integrated planar mixer has been designed by using the home-made beam lead mixer diode. It is indicated by measurements that in the frequency range from 31 to 37 GHz, the frequency conversion loss of the mixer is 8.6±1.4 dB and the local oscillation radio frequency isolation is greater than 19 dB View full abstract»

• ### Buildings in high-speed mobile communication systems

Publication Year: 2000, Page(s):5 - 10
| | PDF (400 KB)

Wide-band digital indoor and future mobile communication systems are being developed in the quasi-millimeter and millimeter wave frequency bands. In such high-speed systems, the degradation of transmission quality by multipath fading constitutes a limiting barrier. Multipath fading, which results from reflection, refraction and scattering of radio waves by buildings and other structures, gives ris... View full abstract»