ATTENUATOR, ATTENUATION QUANTITY ACQUIRING METHOD FOR ATTENUATOR, AND PROGRAM

摘要

PPROBLEM TO BE SOLVED: To reduce an error of an actual gain based upon a specified gain. PSOLUTION: An address generation part 11 is supplied with the specified gain GT and generates exponent part data (n) and a mantissa part address A. The mantissa part address A is set based upon precision of the specified gain GT. A mantissa part coefficient acquisition part 12 is configured to find a mantissa part coefficient (k) from an expression found according to the relation between the exponent part data (n) and mantissa part data for each mantissa part address A. Then the mantissa part address acquisition part 21a and a mantissa part data acquisition part 21b generates a coefficient (a) and data d1 respectively based upon the mantissa part address A to precisely find a mantissa part coefficient (k) of each mantissa address A for the exponent part data (n) for . PCOPYRIGHT: (C)2006,JPO&NCIPI