Julian18
Full Member level 3
Hi, there
I 'd like to find some reference on simulation of coaxial balun. can anyone give me some advice?
also I am confused about the impedance calculation of coaxial of say a EZ90-25 series semi rigid cable. From the datasheet we can see that its impedance is 25 ohms with outer diameter of 90 mils and that of inner of 40 mils, also we can find the dielectric constant of PTFE is 2.01, I think I can calculate the impedance, which is 25 ohms, from these data using formula
but what I get is something 35 or so, not even close to 25, So anything wrong with my calculation?
Thanks
Julian
I 'd like to find some reference on simulation of coaxial balun. can anyone give me some advice?
also I am confused about the impedance calculation of coaxial of say a EZ90-25 series semi rigid cable. From the datasheet we can see that its impedance is 25 ohms with outer diameter of 90 mils and that of inner of 40 mils, also we can find the dielectric constant of PTFE is 2.01, I think I can calculate the impedance, which is 25 ohms, from these data using formula
but what I get is something 35 or so, not even close to 25, So anything wrong with my calculation?
Thanks
Julian