Apparatus for and method of calculating electromagnetic field intensity, and computer program product

A method of calculating an electromagnetic field intensity, comprising:

• calculating a virtual current vector from a voltage vector and a mutual immittance matrix of an object including a wave source where a wave source power is applied, the voltage vector and the mutual immittance using a wave voltage of the wave source as a unit voltage;
• and
• calculating an input impedance of the wave source based on a virtual wave source current of the virtual current vector and a unit voltage of the wave source;
• calculating the wave source voltage based on the input impedance and the wave source power;
• calculating a current vector based on the wave source voltage calculated and the virtual current vector;
• and
• calculating an electromagnetic field intensity around the wave source, the wave source power being determined based on the current vector.

A computer program product including computer executable instructions stored on a computer readable medium, wherein the instructions, when executed by the computer, cause the computer to perform:

• calculating a virtual current vector from a voltage vector and a mutual immittance matrix of an object including a wave source where a wave source power is applied, the voltage vector and the mutual immittance using a wave voltage of the wave source as a unit voltage;
• and
• calculating an input impedance of the wave source based on a virtual wave source current of the virtual current vector and a unit voltage of the wave source;
• calculating the wave source voltage based on the input impedance and the wave source power;
• calculating a current vector based on the wave source voltage calculated and the virtual current vector;
• and
• calculating an electromagnetic field intensity around the wave source, the wave source power being determined based on the current vector.