Negative group delay experimentation with tee connector and cable structuresFayu Wan, Xiaoyu Huangi, Preeti Thakur, Atul Thakur, Sébastien Lalléchère and Blaise RaveloEur. Phys. J. Appl. Phys., 91 1 (2020) 10903DOI: https://doi.org/10.1051/epjap/2020200016