Patent ID: 8441379
Filing Date: 2013-05-14
Classification: H03M

Abstract:
1. A device for generating a digital output signal by digitizing an analog input signal, comprising: a first signal path including a first analog-to-digital converter arranged to convert a first component of the analog input signal, residing in a first frequency band, to a first digital signal; and a second signal path including a second analog-to-digital converter arranged to convert a second component of the analog input signal, residing in a second frequency band, to a second digital signal; wherein the first and the second frequency bands overlap, such that there is a common frequency sub band, which is included in both the first and the second frequency bands; and a combination unit adapted to: determine, based on signal content of the first and the second digital signals in the common frequency sub band, at least one parameter indicating a mismatch between the first and the second signal paths in the common frequency sub band, wherein one of the at least one parameter is a gain parameter indicating a gain mismatch between the first and the second signal paths; generate a first compensated digital signal and a second compensated digital signal based on the first digital signal and the second digital signal, respectively, and on the at least one parameter for compensating the mismatch between the first and the second signal paths in the common frequency sub band; and combine the first compensated digital signal and the second compensated digital signal for generating the digital output signal.