Pls advise 100MHz 50Ohm to 50Ohm SMD Balun

Dear all,

I need some SMD balun, All the three ports are 50Ohm including single_end port and two differential ports,my operation frequency is 100MHz,bandwidth is not required . SMD size is small.

Please advise some part numbers,thanks !

You look for "3 Single ended 50 Ohm Input", "2 Diff. 100 Ohm Output" balun ?
There isn't such a balun..

yes,i need a balun with 3 Single ended 50 Ohm Inputs.

I think there might be a language miscommunication here. You only have two ports on a balun--the single ended input, and the differential output. The single ended input appears to be 50 ohms, but the differential output would be 100 ohms (i.e. 50 ohms to ground for each of the two tabs). These are very common, you are looking for a 1:2 impedance transform. like this one:
http://www.minicircuits.com/MCLStore...59678672104106

The balanced port has a center tap which you could connect to ground if you need a dc path.

A balun is essentially a two-port component.

You can have a transformer with three windings (ports), but it can't match three 50 ohm ports at the same time. There are various three port couplers with specific properties, but they are not simple baluns.

Thanks a lot!