How to design a microstrip Balun for in/output matching impedances?

Hi Guys
can anyone give me some info (link or papers) how to design microstrip line transformer for in/output matching impedances? (I am trying to design an amplifier module using BLF248)
Thanks

I am also designing a balun on IC technology.
What frequency are you working at?
I have several papers that I could share...and one problem.

Take a look at my recent posts.

Yes. it's working in 150-200Mhz and I also looking for 860-920Mhz

I also need some help in designing a balun between 500-700MHz. Any help is aprreciated. Thanks.

Why don't you use a winding transformer for these freq? For examples from http://www.minicircuits.com/products/transformers.html
Microstip line transformer would be huge at these freq...

The Best tutorial for making microstrip Balun I have seen is this
http://www.zen118213.zen.co.uk/RFMic...n%20Design.pdf

If your frequency is in HF or VHF then try to read ARRL books or ARRL antenna compendium
You will find how to design nice Balun

I hope this helps
Abhishekabs