Fujitsu Corporation

Yoshirou Tanaka

Makoto Mukai

Shinichi Ohtsu

Katsumi Homma

When an electric current flowing through an electronic appliance is simulated by solving simultaneous linear equations defined depending on an analytic frequency, the simultaneous linear equations are solved in the direct method using a frequency other than the frequencies on both ends of an analytic frequency area as an analysis target, and the simultaneous linear equations are solved in the iterative method while transforming the simultaneous linear equations using the coefficient matrix analyzed in the direct method on the frequencies other than the above described frequency defined as the analysis target.

Apparatus and method for simulating electric current in electronic appliances

An apparatus and method are provided to calculate the strength of an electromagnetic field radiated from an electric device according to a moment method, wherein the moment method is based on integral equations derived from electromagnetic equations. The apparatus and method include a setting unit to interactively set a name of a two-wire cable arranged in the electric device and coordinates of the two-wire cable at a cable inlet, a cable outlet, and way points in the electric device, the way points being prepared as and when required to bend the two-wire cable between the cable inlet and the cable outlet. Further, the apparatus and method include library unit corresponding to cable names, respectively, and storing attributes of a corresponding cable comprising of the name, type, characteristic impedance, and structural data of the two-wire cable. A generation unit is provided to generate a moment-method model of the two-wire cable according to the attributes of the two-wire cable read out of the at least one library unit specified by the name of the two-wire cable set by the setting unit and the coordinates of the two-wire cable at the cable inlet, cable outlet, and way points set by the setting unit. A calculation unit calculates the strength of the electromagnetic field radiated from the electric device according to the moment-method model of the two-wire cable and the moment method.

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Kanagawa, Japan

Yoshirou Tanaka