rf modulator combiner

I have a small project in which I must add a loop through RF system.

In this loop I must have RF in, have it coupled to outputs from 8 RF modulator IC, then buffered to an output. I also need to feed 4 TV tuners on the way

I am guessing that the rf modulators will need some form of isolation between them and whatever couples them together will need compensation for the insertion loss.

This won't be a big thing, so use of parts that i can buy or make easily would be better.

Any help, suggested parts, some topology or schematics appreciated

:F

You search a "power combiner-splitter" don't you?

To realize CATV combiners-spilitter, you should use ferrite transformers for a wideband and sufficient isolation.Normally isolation should be at least 30-50dB and it can be implemented with a little care.Output-input impedances must also have 75Ohm to obtain good reflection coeff.

This is what I understood from your abstract.If I have misunderstood, please ignore my comments..

The application is correct and you understand it.

I will do some more searching

:F