[![enter image description here][1]][1] Not being an electronics professional but face the following problem I hope you can help me. I would like to estimate the losses due to an impedance mismatch of connector used in wall-crossing of a coaxial transmission line. Unfortunately, I do not have the experimental resources for testing the connector (with network analyzer). Is it possible with analytical formula or with simulations? [1]: https://i.sstatic.net/CURMr.jpg