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## Homework Statement

We are to assume an infinite transmission line with the following parameters:

capacitance: 296 ρF/ft

Z

_{c}=52Ω

inductance: 8.0 × 10

^{-7}H/ft

We are told that a 100MHz signal is attenuated 31 dB per 100 feet and asked based on the information, assuming no leakage through the insulator, to find the series resistance per unit length.

## Homework Equations

H(ω,l) = e

^{-l[itex]\sqrt{(jωL+R)(jωC+G)}[/itex]}

20log(

*A*) = -[attenuation in dB], where A is gain.

## The Attempt at a Solution

I have worked on this problem multiple ways. I understand that the resistance will be frequency dependent, but for the life of me cannot figure out a way to set up the equation without getting a crazy resistance value. (e.g. -5050jΩ) I'm not even sure what value I am looking for in resistance as in, can it be imaginary?

Also, is there some sort of way I could solve for the resistance by plotting this in MATLAB or some other software? I'm really struggling and frustrated with a problem that seems like it shouldn't be very difficult.