Shin, Y. H., Y. H. Lim, S. E. Park, J. Y. Kim, J. E. Bang, and J. H. Choi. “Ultra-Low Power Quadrature LO-Generator”. Journal of Integrated Circuits and Systems, Vol. 8, no. 1, Dec. 2021, doi:10.23075/jicas.2022.8.1.006.