IPC Subgroup
G01R 23/16 Spectrum analysis; Fourier analysis
Introduced: September 1968
Last revised: January 2006
Full Title
Arrangements for measuring frequencies; Arrangements for analysing frequency spectra > Spectrum analysis; Fourier analysis
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
Related Keywords
measuring electric HARMONICS
8 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- G01R 23/163 adapted for measuring in circuits having distributed constants
- G01R 23/165 using filters
- G01R 23/17 with optical auxiliary devices
- G01R 23/173 Wobbulating devices similar to swept panoramic receivers
- G01R 23/175 by delay means, e.g. tapped delay lines
- G01R 23/177 Analysis of very low frequencies
- G01R 23/18 with provision for recording frequency spectrum
- G01R 23/2 Measurement of non-linear distortion