Delay-sum beamforming using delta-sigma modulated inputs
Date of Original Version
This paper presents a novel approach for the realization of time-domain beamformers. The developed delay-sum beamformer concept utilizes delta-sigma data converters at the front end, which produce highly oversampled (single-bit) data streams. Therefore, no additional interpolation procedure is necessary. Furthermore, the simple one-bit data-format enables a multiplier free implementation of the shading coefficients. MATLAB simulations have demonstrated the functionality of the proposed concept. The presented hardware configuration is flexible and well suited for a VLSI implementation.
Midwest Symposium on Circuits and Systems
Weibel, Christian T., and Godi Fischer. "Delay-sum beamforming using delta-sigma modulated inputs." Midwest Symposium on Circuits and Systems 3, (2000): 1198-1201. https://digitalcommons.uri.edu/ele_facpubs/228