Electromagnetic wave analysis apparatus and design support apparatus

An electromagnetic wave analysis apparatus for examining an effect on electromagnetic waves transmitted and received via an antenna of components or lines provided on a circuit board of electronic equipment that transmits and receives electromagnetic waves via the antenna,

• the electromagnetic wave analysis apparatus comprising:
• a position input portion that inputs position data indicating positions of terminals of the components or positions of the lines provided on the circuit board;
• an antenna electromagnetic field distribution input portion that inputs antenna electromagnetic field distribution data indicating a distribution of an antenna electromagnetic field that is a magnetic field component or an electric field component of the electromagnetic waves transmitted and received via the antenna;
• and
• an extraction portion that extracts a terminal or a line that may affect transmission and reception functions of the electronic equipment from the terminals of the components or the lines indicated by the position data by comparing the position data with the antenna electromagnetic field distribution data.

A recording medium for storing an electromagnetic wave analysis program that allows a computer to execute processes of examining an effect on electromagnetic waves transmitted and received via an antenna of unwanted radiation noise generated from a circuit board of electronic equipment that transmits and receives electromagnetic waves via the antenna,

• the electromagnetic wave analysis program allowing the computer to execute the following processes:
• an antenna electromagnetic field distribution input process of inputting antenna electromagnetic field distribution data indicating a distribution of an antenna electromagnetic field that is a magnetic field component or an electric field component of the electromagnetic waves transmitted and received via the antenna;
• a board near electromagnetic field distribution input process of inputting board near electromagnetic field distribution data indicating a distribution of either or both of an electric field component and a magnetic field component of a board near electromagnetic field that is unwanted radiation noise radiated from the circuit board of the electronic equipment as a result of operation of the electronic equipment;
• and
• a correlation value generation process of generating a distribution of correlation values showing a correlation between the antenna electromagnetic field and the board near electromagnetic field based on the antenna electromagnetic field distribution data and the board near electromagnetic field distribution data.

A recording medium for storing an electromagnetic wave analysis program that allows a computer to execute processes of examining an effect on electromagnetic waves transmitted and received via an antenna of components or lines provided on a circuit board of electronic equipment that transmits and receives electromagnetic waves via the antenna,

• the electromagnetic wave analysis program allowing the computer to execute the following processes:
• a position input process of inputting position data indicating positions of terminals of the components or positions of the lines provided on the circuit board;
• an antenna electromagnetic field distribution input process of inputting antenna electromagnetic field distribution data indicating a distribution of an antenna electromagnetic field that is a magnetic field component or an electric field component of the electromagnetic waves transmitted and received via the antenna;
• and
• an extraction process of extracting a terminal or a line that may affect transmission and reception functions of the electronic equipment from the terminals of the components or the lines indicated by the position data by comparing the position data with the antenna electromagnetic field distribution data.

An electromagnetic wave analysis method using a computer for examining an effect on electromagnetic waves transmitted and received via an antenna of unwanted radiation noise generated from a circuit board of electronic equipment that transmits and receives electromagnetic waves via the antenna,

• the method comprising:
• allowing an antenna electromagnetic field distribution input portion of the computer to input antenna electromagnetic field distribution data indicating a distribution of an antenna electromagnetic field that is a magnetic field component or an electric field component of the electromagnetic waves transmitted and received via the antenna;
• allowing a board near electromagnetic field distribution input portion of the computer to input board near electromagnetic field distribution data indicating a distribution of either or both of an electric field component and a magnetic field component of a board near electromagnetic field that is unwanted radiation noise radiated from the circuit board of the electronic equipment as a result of operation of the electronic equipment;
• and
• allowing a correlation value generator of the computer to generate a distribution of correlation values showing a correlation between the antenna electromagnetic field and the board near electromagnetic field based on the antenna electromagnetic field distribution data and the board near electromagnetic field distribution data.

An electromagnetic wave analysis method using a computer for examining an effect on electromagnetic waves transmitted and received via an antenna of components or lines provided on a circuit board of electronic equipment that transmits and receives electromagnetic waves via the antenna,

• the method comprising:
• allowing a position input portion of the computer to input position data indicating positions of terminals of the components or positions of the lines provided on the circuit board;
• allowing an antenna electromagnetic field distribution input portion of the computer to input antenna electromagnetic field distribution data indicating a distribution of an antenna electromagnetic field that is a magnetic field component or an electric field component of the electromagnetic waves transmitted and received via the antenna;
• and
• allowing an extraction portion of the computer to extract a terminal or a line that may affect transmission and reception functions of the electronic equipment from the terminals of the components or the lines indicated by the position data by comparing the position data with the antenna electromagnetic field distribution data.