Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
First plot the S21 Magnitude in dB & then find the two highest peaks in |S21|.
The frequency of the first peak (lower frequency) is called F_low.
The frequency of the second peak (high frequency) is called F_high.
Then use the output equation to calculate coupling coefficient
K =
(F_high^2-F_low^2)/(F_high^2+F_low^2)
This formula is from the Daniel G. Swanson Jr. article entitled
"Narrow-Band Microwave Filter Design. IEEE Microwave Magazine. www.macom.com/TechApps/pdf/NarrowBandFilterDesign10_07.pdf
See the extracted pictures…
Then finally sweep the spacing between the resonators (S) & plot the coupling coefficient vs Spacing on a graph…
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
