DISTORTION SUPPRESSING CALIBRATION Russian patent published in 2008 - IPC H04B1/30 

FIELD: communications engineering, possible use for compensating non-linear distortions in wireless communication devices.

SUBSTANCE: in accordance to the invention, wireless communication device contains direct transformation receiver with frequency reduction and distortion suppression device for suppressing non-linear second order distortions in receiver, where suppression device has squaring device for receiving radio-frequency signal being received, injected into input of mixer in receiver, and generating square version of received radio frequency signal, amplification cascade, meant for receiving square version of received radio frequency signal, where output signal of amplification cascade has amplitude, corresponding to second order non-linearity characteristic of aforementioned receiver, and output communication device for sending output signal from amplification cascade to output of aforementioned receiver for generation of signal, transformed with reduced frequency and belonging to band of modulating signal frequencies, characterized by suppressed non-linear distortions of second order.

EFFECT: reduction of non-linear second order distortions, resulting from interference sources and occurring in direct transformation receiver with frequency reduction.

4 cl, 6 dwg