ABSTRACT
ABSTRACT: Time interleaving is one of the most efficient techniques employed in the design of high-speed analog beamformers in ultrasound phased array transducers. However, its implementation introduces several mismatch errors between interleaved subunits, limiting the accuracy of the overall system. In this paper, a method for estimation and correction of frequency response mismatch based on an adaptive equalization is reported. The adaptive algorithm requires only that the input signal is band-limited to the Nyquist frequency for the complete system. The proposed method greatly reduce the computational complexity requirement of sampled signal reconstruction and offers simplified hardware implementation.
