I have this RF transformer at the front end of a VHF transceiver. It looks like it splits the RX and TX signals into two ports and a bandpass filter filters out the unwanted frequency. Any idea as to what this transformer might be? I have attached some images for your reference.
I think this is a special designed coupler and they used for a particular purpose.
It supplies matching and coupling functions simultaneously. You have to refer to IC manufacturer.
So I think I've found what it is. It is an RF power divider. Even though this is a 50ohm system the designer seems to be using a 75ohm component like this MAPD-011035 device (I checked again and the resistor in all the other boards was 150 ohm instead of 124ohm. might have been a mistake in assembly).
For my design, I will use TCP-2-10X+ by Mini-Circuits which is a propper 50 ohm part.