Looking for books or articles on rat race design

Hi,

I'm looking for books or articles on rat race design, preferably mixer part, do anyone haves any of these info or knows where to find them? Thanks

This book is what you are looking for:
https://www.edaboard.com/viewtopic.p...highlight=maas

Hi ,

https://www.edaboard.com/viewtopic.p...559&highlight=

http://www.ee.bilkent.edu.tr/~microw...rid/hybrid.htm

Regards