Book that covers transfer function of transmission line?

[Rodolfo]

I've been looking for that in various applied electromagnetics books but none of them cover that subject even on the internet the only website I saw it mentioned was in this forum I guess I'd like a book with a level a little above for example cheng or balanis

 

[Baluncore]

Welcome to PF.
Does a transmission line have a simple transfer function?
A transmission line appears as a time delay, and so because of impedance mismatch reflections at either end, transforms the load impedance back to the input. The Smith Chart can be used to calculate the transformation.
https://cas.web.cern.ch/cas/Denmark-2010/Lectures/Caspers-Smith-Chart.pdf