Zobrazeno 1 - 10
of 91
pro vyhledávání: '"G.I. Costache"'
Autor:
G.I. Costache, C.L. Gardner
Publikováno v:
IEEE Transactions on Electromagnetic Compatibility. 37:358-366
In many cases, the effectiveness of an electromagnetic shield is determined by apertures that exist in the shield. To minimize the penetration of EM fields through a large aperture, the aperture is sometimes loaded with conductive material. The solut
Autor:
G.I. Costache, M. S. Tharf
Publikováno v:
Canadian Journal of Electrical and Computer Engineering. 19:155-159
The edge-based finite-element method (edge elements) is used to obtain a numerical solution for the radiated emissions and crosstalk voltages on printed circuit boards (PCBs). Both shielded and open PCBs, over a wide frequency range, are analyzed and
Autor:
G.I. Costache, R. Laroussi
Publikováno v:
IEEE Transactions on Electromagnetic Compatibility. 36:189-195
This paper presents a new approach to derive far-field data needed in antenna and EMI/EMC testing from near-field measurements. An exact integral equation solution to the wave propagation problem is used to transform the near-field data to the far fi
Autor:
G.I. Costache, X.-D. Cai
Publikováno v:
IEEE Transactions on Electromagnetic Compatibility. 36:398-404
The triple-TEM (TTEM) cell offers the possibility of alternative exposures of the electric field on the equipment under test in one setup. Traditional TEM cell design approaches cannot be applied to the TTEM cell because of the special geometric arra
Autor:
G.I. Costache, R. Laroussi
Publikováno v:
IEEE Transactions on Electromagnetic Compatibility. 35:178-184
In a printed circuit board environment, the solution domain is highly inhomogeneous, and analytic expressions for design parameters are very difficult to obtain, even for the simplest configuration. The finite element method (FEM) offers an attractiv
Autor:
G.I. Costache, D.N. Ladd
Publikováno v:
IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing. 39:342-347
In analog and digital electronic systems, cross-talk between tracks on a printed circuit board can degrade the performance of equipment operations. A technique based on additional tracks grounded by vias, with which the cross-talk can be reduced by 5
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 39:1165-1172
The propagation of transient electromagnetic fields in dispersive dielectric media is studied. The dielectric medium is assumed to be linear, isotropic, and homogeneous, and is described by the Debye model. Incident fields are assumed to be transvers
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 38:379-386
A numerical modeling procedure based on Johns time-domain diakoptics approach with space interpolation techniques for efficient transmission-line matrix (TLM) analysis of two-dimensional microwave circuits is discussed. Frequency-dispersive boundarie
Autor:
G.I. Costache, R. Laroussi
Publikováno v:
AMPC Asia-Pacific Microwave Conference.
This paper presents a method to calculate the radiated far-field of equipment under test (EUT) from near-field measurements taken in an anechoic chamber, thus replacing open field measurements. The method is based on a boundary integral and makes use
Publikováno v:
National Symposium on Electromagnetic Compatibility.
The application of expert-system techniques to the electromagnetic hardening domain is briefly described with regard to a prototype named HardSys, written in Prolog and containing a subset of the domain knowledge. In this system the domain knowledge