Ricoh Company, Ltd.

Toshinobu Shoji

Kazumasa Aoki

Hideji Miyanishi

Kenji Motohashi

Kikuo Kazama

An electromagnetic field analysis apparatus includes an information input device configured to input information as to wirings and components of an analysis object and a modeling device configured to generate a simulation model of the analysis object based on the inputted information as to wirings and components of the analysis object. A model simplification device simplifies the simulation model into a simplified simulation model by dividing the analysis object according to the simulation model into a plurality of cells and thinning out, when a plurality of elements are included in a cell, the plurality of elements.

Electromagnetic field analysis apparatus, method and computer program

A noise injection apparatus for injecting noise to a printed circuit board is disclosed that includes a signal generator that generates noise, a coaxial cable having one end connected to an output of the signal generator, and a probe that is connected to another end of the coaxial cable and is configured to convey the noise generated by the signal generator to a power supply and a ground pin of a device element of the printed circuit board via the coaxial cable.

Noise injection apparatus for printed circuit board

A testing method for measuring electromagnetic interference of a noise on a to-be-tested printed circuit board, has the steps of: a) injecting a signal simulating an expected noise of a predetermined device mounted on the to-be-tested printed circuit board, into the to-be-tested printed circuit board, in a condition in which at least the predetermined device is not actually mounted on the to-be-tested printed circuit board; and b) measuring electromagnetic interference of the signal.

Growing community of inventors

Kanagawa, Japan

Toshinobu Shoji