Marchand balun layout

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1) ADS doesn't convert to physical layout (dimension) if your schematic has electrical parameters (impedance).
2) If your schematic has straight coupled line, that is what you get in layout.
3) There is no predefined layout element for such interleaved inductors, unfortunately.

So there is a lot of manual layout work ahead.
 
Someone else told me to replace CLIN with **broken link removed** and then use linecalc to get the correct length and width.

What do you think about this idea ?
 

promach said:
Someone else told me to replace CLIN with **broken link removed** and then use linecalc to get the correct length and width.
What do you think about this idea ?
Click to expand...

Yes, that's fine, but it will be straight lines.
 
So there is a lot of manual layout work ahead.
Click to expand...

Yes, I am now trying to replicate planar layout of marchand balun on PCB using SonnetLite instead.

This book **broken link removed** has some good examples (maths theory + implementation) on microstrip filters, but not balun.

:-(
 

How to derive the expressions involving Ya， Yb， Zoe，Zoo ?

And why need to increase Zoe/Zoo impedance ratio ?
 

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