[SOLVED] Power combiner/Splitter noise fiugre (or in general noise power)

[LandLack]

Hi to all,
I am reading some splitters' datasheet, but can't find any infos related to the noise (like noise figure, system temperature, etc.).
I'm sending you a link with one of the datasheet; please tell me if I'm missing something.
Also, is it realistic to think it as a filter or attenuator's situation (so the effective attenuation=noise figure)?

 

[chuckey]

If there are no resistive bits in the splitter it will not generate any noise.
Frank

 

[keith1200rs]

I'm sending you a link with one of the datasheet; please tell me if I'm missing something.

The link to the datasheet is missing!

Keith

 

[LandLack]

If there are no resistive bits in the splitter it will not generate any noise.
Frank

But there is a 3 loss: 3dB for 2x1 splitters/combiners, and 6 dB for 4x1 splitters/combiners, etc.

The link to the datasheet is missing!

Keith

You're right, thank you for hinting me
**broken link removed**

 

[jiripolivka]

But there is a 3 loss: 3dB for 2x1 splitters/combiners, and 6 dB for 4x1 splitters/combiners, etc.

You're right, thank you for hinting me
**broken link removed**

Any lossy device adds the noise figure that equals to its loss in dB. But beware: as the other coupler or divider branch is connected somewhere, this can be a path of an interfering signal. Check for isolation and if some interfering signal can get into your low-noise reciver.