No way that antenna has a feedpoint impedance of 0.1 ohms. Connect it up to a network analyzer and get a real sweep of the impedance vs frequency. Without that, any attempt to design a low loss power splitter is going to be futile.

 

RE: Ylli
Have seen a multiple China made Rubber Ducks used for WiFi what show on the vector analyser 0,1 Ohm active and 50-75 Ohm reactive. Probably they have such style let transmitter be no so much useful? At least from the surprize I made a full graduation of VNA but the dumb figures staid unchanged. The same way as one school here bought a 2500 school chairs what after few weeks 99% was crushed and expertise shown that weight at which those chairs disassembles is between 15 and 20 kg. Think enterprize changed at least one screw in this construction? No, they just looked for next buyer again and again!