Recent content by jim_123

The characteristic impedance of a coaxial transmission line is given by: Z= (Z0ln(b/a))/(2πt), where Z0 is the characteristic impedance of free space and so Zannulus = (Z/Z0)*(ρ/t) as stated in my previous post. Jim

Rude man: As I pointed out in my earlier post,the annulus resistance is given by: (ρln(⁡b/a))/2πt Where a and b are the radii of the inner and outer cylinders respectively. Jim

rude man: Sorry, my explanation wasn't particularly clear. What I mean is that there are essentially 3 resistances we can consider: the resistance of the annulus alone (annular resistance), the resistance of the impedance we've connected across the end of the cable alone (terminal...

The terminating resistance and annular resistance are in parallel, they both contribute to the load resistance. Taking this into account you will find r=-0.27. Incidentally, I found that analysing this problem in terms of incident and reflected waves gave the same answer, and also showed that r...

Update: Thanks for the suggestion Rude Man. I had tried the approach that you mentioned, but I ran into difficulties due to the absence of parameters. However, after revisiting this problem, I realized that the difficulty was indeed due to the incorrect expression for the resistance of the...

Homework Statement An annular sheet, of thickness t=1mm and resistivity ρ=0.5Ωm, connects the inner and outer conductors of an air spaced coaxial transmission line at a point on the line. A low-frequency signal is fed into one end of the line and the other is terminated by its characteristic...