TY - JOUR AU - Dylan Williams C2 - IEEE Transactions on Microwave Theory and Techniques DA - 1990-06-01 DO - https://doi.org/10.1109/22.130977 LA - en M1 - 38 PB - IEEE Transactions on Microwave Theory and Techniques PY - 1990 TI - De-embedding and unterminating microwave fixtures with nonlinear least squares ER -