@article{16041, author = {Leonardo Ranzani and Lafe Spietz and Jose Aumentado and Zoya Popovic}, title = {A 4:1 transmission-line impedance transformer for broadband superconducting circuits}, year = {2012}, number = {22}, month = {2012-10-01}, publisher = {IEEE Transactions on Applied Superconductivity}, doi = {https://doi.org/10.1109/TASC.2012.2202116}, language = {en}, }