Digital correction of frequency response mismatches in 2-channel time-interleaved ADCs using adaptive I/Q signal processing
Research output: Contribution to journal › Article › Scientific › peer-review
|Number of pages||13|
|Journal||Analog Integrated Circuits and Signal Processing|
|Publication status||Published - 2015|
|Publication type||A1 Journal article-refereed|
A novel adaptive compensation architecture for the frequency response mismatch of 2-channel time-interleaved ADC (TI-ADC) is proposed for developing high-performance self-adaptive systems. The proposed approach overcomes the existing methods in the sense that the TI-ADC mismatch identification can be performed without allocating a region where only the TI-ADC mismatch spurs are present. This is accomplished via mapping the TI-ADC problem into an I/Q mismatch problem which allows deploying complex statistical signal processing. As proof of concept, the compensation architecture is demonstrated and tested on a 16-bit TI-ADC measured hardware data.
- Circularity, Complex I/Q signal processing, Digitally assisted analog (DASA), Frequency response mismatch identification, Time-interleaved ADC