Patent ID: 6861833
Filing Date: 2005-03-01
Classification: G01R

Abstract:
1. In a method in which a signal being measured is converted in a mixer into an intermediate frequency signal having an intermediate frequency F i by means of a frequency sweep signal, a method of measurement by sweeping frequency conversion characterized by a first measuring step of using a sweep signal having a frequency which is equal to a frequency in a range of set-up frequencies added with the F a second measuring step of using a sweep signal having a frequency which is equal to the frequency in the range of set-up frequencies from which the F there being M intermediate frequencies F performing the first measuring step for each intermediate frequency F performing the second measuring step for each intermediate frequency F and applying an image elimination processing to the M items of measured data obtained during the first measuring step which is repeated M times and M items of measured data obtained during the second measuring step which is repeated M times by determining data all having an equal value and data having a minimum value for a same measured frequency point.