G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
G01R29/26—Measuring noise figure; Measuring signal-to-noise ratio
G—PHYSICS
G06—COMPUTING OR CALCULATING; COUNTING
G06G—ANALOGUE COMPUTERS
G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
G06G7/18—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals
G06G7/184—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals using capacitive elements