Patent ID: 6108351
Filing Date: 2000-08-22
Classification: H04B

Abstract:
Process for estimating non-linearity of a device (11, 23, 62) comprising steps of generating one or more pilot signals (10; 19, 20; 65) upstream of the device for measuring components of their intermodulation products at the output of the device, characterized in that the pilot signals pass through at least one known non-linear device (15; 30; 37, 40; 48) delivering intermodulation products of known characteristics, in that at least one of the components of the known intermodulation products is harnessed in order to modulate, with the aid of synchronous detection circuits (17; 27, 35), at least one signal relating to the components to be measured, and in that the pilot signals (10; 19, 20; 65) passing through the known non-linear device (15; 30; 37, 40; 48) are tapped off by filtering (14; 28, 29) the output signal from the device to be measured (11, 23).