About impedance matching?

Anybody knows how to make impedance matching from balance to unbalance ?
Is there any matching companent in the BALUN IC ?

A balun at RF frequencies is best done by passive means, like a toroid transformer. Just search for "antenna balun" on googly, I'm sure you get a lot of hits.

You can also buy an ARRL book or an ARRL antenna book. They explain this in detail.

Bert

hi,I have designed a balun with microwave office,but the balun is very bad from 2 GHz t0 18 GHz,would you like to send me some advice?

Hi,


You can use LC circuit or microstrip with 180 degree phase shift to implement a balun

Hi zkmicrowave.

Typically baluns are not meant to have such a wide band width.
Unless you use active components, or in corporate an unity gain
Distributive Amp to you balun. Most baluns(Passive Microwave/RF)
will work at Fo and will kinda work at 2*Fo, 3*Fo...
You should look online for a company and see if they have anything
with that wide of a band width.
Good luck.