transmission line balun

Hello!

I'm designing a diode ring mixer on LTCC for freq 1G to 5G. For balun I'm going to use a spiral transmission line balun but I don't know where to take IF signal. Because the balun doesn't has a center tap like in transformer balun. Could somebody give me an examle of using spiral transmission line balun for balanced diode ring mixer in LTCC? or give me an idea to connect IF to the STL balun?

Hello Alex_IC
I have found some links.
see whether they help you & you get idea.

http://www.nonlintec.com/circuits.htm

If you like the concept browse their website & try finding in IEEE MTT.

hi...
It's great
Thank you for your contribution