The Integrated Compensation Structure Design of Broadband Mixed Frequency Response Mismatch in High-Resolution Quadrature Signal Reception System

This research will conduct a joint analysis on the propagation mechanism of phase/quadrature (I/Q) imbalance error and time-interleaved analog to digital converter (TIADC) mismatch error in the broadband quadrature reception system, establish a unified broadband mixed frequency response mismatch error model, and propose a digital integrated compensation strategy based on flower pollination algorithm to jointly eliminate the error, aiming to minimize the comprehensive impact of the two errors on the system and ensure the best performance of high-speed and high-precision sampling of the system, and ensure the system with stronger capture and analysis capabilities for broadband complex signals. The simulation verified that the compensation structure can eliminate the mixed frequency response mismatch error and enhance the key indicators effectively.