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AssigneeElectronics and Telecommunications Research Institute
InventorsAe Kyoung Lee, Jae Hoon Yun, Kwang Yun Cho
Estimating the term…
A method for evaluating radiation electric fields using output port powers of GTEM cell to obtain correlation between GTEM cell and Open Area Test Site(hereinafter, called OATS) in order to simulate electromagnetic wave radiation emission more accurate than GTEM(Giga-hertz Transverse Electromagnetic; hereinafter, called GTEM) cell, one of replacing facilities of OATS, a test facility for evaluating radiation emission for a test of electromagnetic interference(EMI). The adaption to a phase change of a dipole moment is very high by computing the electric field from a radiated matter using 15 GTEM cell output port powers as well as stably evaluating a radiation quantity upon considering the respective phase of the dipole illustrating an object due to various input values required in the algorithm.
A method for estimating radiated emission level from an EUT at an arbitrary position on the turn table at OATS comprising a method for evaluating radiated electric fields from an EUT using a GTEM cell upon replacing OATS, namely, facilities measuring a vertical and horizontal electric fields occurred from an electric and magnetic instrument(EUT), said method comprises steps of:
A method for estimating radiated emission level from an EUT at an arbitrary position on the turn table at OATS, wherein said EUT is supposed as electric and magnetic dipole moments P(=Pxejψpxax+Pyejψpyay+Pzejψpzaz, where, ax, ay, az are respectively the unit vectors, in the directions of x, y and z) and M(=Mxejψmxax+Myejψmyeay+Mzejψmzaz) with initial phases to the respective components, and has a correlation with the GTEM cell output powers of [Equation 20] in order to compute vertical and horizontal radiation electric fields from the object on the ground plane of OATS or SAC ( a ) P z 2 + k 0 2 M y 2 = P 1 ( f ) + P 4 ( f ) 2 ( b ) P z 2 + k 0 2 M x 2 = P 3 ( f ) + P 5 ( f ) 2 ( c ) k 0 P z M y sin ( Ψ pz - Ψ my ) = P 4 ( f ) - P 1 ( f ) 4 ( d ) k 0 P z M x sin ( Ψ pz - Ψ my ) = P 5 ( f ) - P 3 ( f ) 4 ( e ) k 0 2 M x M y cos ( Ψ mx - Ψ my ) = P 2 ( f ) P 1 ( f ) + P 3 ( f ) + P 4 ( f ) + P 5 ( f ) 4 - 2 ( P 1 ( f ) + P 3 ( f ) - P 4 ( f ) - P 5 ( f ) ) 4 ( f ) P x 2 + k 0 2 M z 2 = P 6 ( f ) + P 9 ( f ) 2 ( g ) P x 2 + k 0 2 M y 2 = P 8 ( f ) + P 10 ( f ) 2 ( h ) k 0 P x M z sin ( Ψ px - Ψ mz ) = P 9 ( f ) - P 6 ( f ) 4 ( i ) k 0 P x M y sin ( Ψ px - Ψ mz ) = P 10 ( f ) - P 8 ( f ) 4 ( j ) k 0 2 M y M z cos ( Ψ my - Ψ mz ) = P 7 ( f ) P 6 ( f ) + P 8 ( f ) + P 9 ( f ) + P 10 ( f ) 4 - 2 ( P 6 ( f ) + P 8 ( f ) - P 9 ( f ) - P 10 ( f ) ) 4 ( k ) P y 2 + k 0 2 M x 2 = P 11 ( f ) + P 14 ( f ) 2 ( l ) P y 2 + k 0 2 M z 2 = P 13 ( f ) + P 15 ( f ) 2 ( m ) k 0 P y M x sin ( Ψ py - Ψ mx ) = P 14 ( f ) - P 11 ( f ) 4 ( n ) k 0 P y M z sin ( Ψ py - Ψ mx ) = P 15 ( f ) - P 13 ( f ) 4 ( o ) k 0 2 M x M z cos ( Ψ mx - Ψ mz ) = P 12 ( f ) P 11 ( f ) + P 13 ( f ) + P 14 ( f ) + P 15 ( f ) 4 - 2 ( P 11 ( f ) + P 13 ( f ) - P 14 ( f ) - P 15 ( f ) ) 4 . [Equation 20]
Dependencies are inferred from the claim text.