How can we derive the equations for characteristic impedance and effective dielectric constant of microstrip transmission line?
The formula for Z0 is an emphirical relation. Probably, the equation is fitted with the data of a number of microstrip lines. Nowdays advanced 3D codes estimate Z0 based on field calculator.
@Anurag Misra
Thanks for your reply.
I also have the same feeling that we have approximate it using some simulations.
I would rather suggest to use any of existing relations like in Edwards T.C.: Foundations for Microstrip Circuit Design, Wiley, New York 1980
@Adam Abramowicz
Thanks for the help.
I have one more concern-
Can you please suggest me from where I can purchase/download it?
The book can be read at:
https://books.google.pl/books?id=EDVlt8hXpzAC&pg=PA20&lpg=PA20&dq=Edwards+T.C.:+Foundations+for+Microstrip+Circuit+Design,+Wiley,+New+York+1980&source=bl&ots=HqW1PSewlv&sig=IUhom5Cv66ZL0F44hoUDE8lKS-M&hl=pl&sa=X&ei=97rCVILeC8LIPPaIgOgG&ved=0CC4Q6AEwAg#v=onepage&q=Edwards%20T.C.%3A%20Foundations%20for%20Microstrip%20Circuit%20Design%2C%20Wiley%2C%20New%20York%201980&f=false
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