| 摘要 |
<p>PURPOSE:To enable amount of radiation of radio wave of a printed-circuit board in designing stage to be estimated by obtaining current flowing to one of wiring patterns on a printed-circuit board and then obtaining amount of radiation of radio wave which is generated by that current. CONSTITUTION:When data of a printed-circuit board is entered by an input means 1 and is stored in a data storage means 2, current distribution is calculated by a current distribution estimation means 3a and amount of radiation of radio wave is calculated by a radio wave radiation amount estimation means 3b for all wiring patterns formed on the printed-circuit board obtained from this data. The result is stored in the means 2, those data are arranged for each frequency by a synthesized electric wave radiation amount estimation means 3c, and data of the same frequency is totalled and then the frequency spectrum is displayed by an output means 4. Also, in the case of simulation of electric wave radiation for a single frequency, when a specific frequency which is to be investigated is entered from the means 1, current distribution is calculated by the means 3a for all wiring patterns and amount of radiation of radio wave is calculated by the means 3b and then is outputted by the means 4.</p> |
