Microstrip Coupled line impedance matching

Hello everyone, could you help me this problem

I design a microstrip bandpass filter using coupled line model.
Some parameters of my circuit:

• Zin, Zout = 50 Ω

• f_center = 6.142 GHz

• Order N = 5

• In the input resonator,

  

  = 82.664 Ω,

  

  =37.623 Ω

  

  

  = 55.768 Ω

How to impedance matching Z and Zin?
Thanks alots

This is my design in ADS, (some parameters in schematic was changed after tuning)

up.........

Your calculations is not exactly correct.Odd and Even mode impedances are valid only and only if there are 2 coupled lines.But if there are more than 2 coupled lines like in your filter structure , it's hard to say that formulae will still be valid in any case.You forget other interactions between-for instance- first element and kth element.
If you do a EM simulation, you will see that your calculation is not exact but maybe approximate.

Why are you using MCLINs to construct this filter? The unconnected pins on the 4 pin device mean that these connections are not being calculated correctly, they assume something should be connected there. Using the 2 pin MCFIL element, just above it in the Microstrip palette, would be much better and yield more accurate results for a given topology.

I have calculated in #1. Could you guide me more!?



I used LineCalc tool and it selected MCLIN automatically

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