Looking for a power divider

Broadband power divider uses 3 resistor in star configuration, theoretical value is Z0/3. It means for 50Ohm impedance are 3 resistors 18Ohm often used. I.L. is 6dB for this kind of divider and 6dB is also the isolation between output paths. The phase is 0Deg. Of course there are other types of power divider (branch-line, rate-race, Wilkinson) with I.L. of 3dB, but bandwidth is lower.

The source impedance I am using is 25Ohms .The RF signal comes out of this . I think 18Ohms is okay to be  used in that . What do you suggest  ? My bandwidth requirements are 3G Max , would the other kind of IL=3dB work for me ? Are these components available with AD ?

If you are using the characteristic impedance 25Ohm, I would recommend 8.2Ohm using in the resistive splitter instead.

entelechynaren said:

Are these components available with AD ?

I am not an AD employ, I am only member of this forum, but I am afraid, AD does not have such component in their portfolio. AD specializes more on active components. 

entelechynaren said:

would the other kind of IL=3dB work for me ?

yes, there are more types of splitters as I wrote you. Depends on the signal phase relation, what you want. I attach example of Wilkinson divider, which simple to design and well known.

PDF

Thank you viktor_vojta for your replies. It is a workable proposition for me to use . The other thing that worries me in implementing is the problem of my current driving ability . Below is snip of the circuit I am trying to implement. 

The inputs need some driving current which I am sure that using a passive resistive divider , I would not be able to achieve. Is there a way to simulate this on any platform using the ADL5330 ? Only if there was a follower that I could use and it had a dual output mechanism. 

Narender

Thank you viktor_vojta for your replies. It is a workable proposition for me to use . The other thing that worries me in implementing is the problem of my current driving ability . Below is snip of the circuit I am trying to implement. 

The inputs need some driving current which I am sure that using a passive resistive divider , I would not be able to achieve. Is there a way to simulate this on any platform using the ADL5330 ? Only if there was a follower that I could use and it had a dual output mechanism. 

Narender

Each follower has got of course phase shift and as you wrote you need phase matched outputs over frequency. 

entelechynaren said:

The inputs need some driving current which I am sure that using a passive resistive divider , I would not be able to achieve

What about the crossing resistors by RF inductor, which creates DC path.

viktor_vojta said:

What about the crossing resistors by RF inductor, which creates DC path

You mean using inductors in place of the resistors ?

I mean you need to supply the chip ADL5530 and you are afraid thermal losses or high voltage drop on resistive splitter. Thus the inductor (high impedance at RF and low near DC) may deliver sufficient DC current into the ADL5330.