No. The coax (antenna) port on a TV requires radio frequency inputs, that are analog. A 3.5mm jack has analog video and audio which is not a radio signal. They DO make devices, called analog RF modulators, that will convert your RCA jacks to a signal that could be received by your old TV -- https/www.amazon.com/RCA-Compact-RF-Modulator-CRF907A/dp/B0014KKV7W
Just about everywhere, u didn't disclose where u are from, OTA (antenna) signals is been converted to digital, so for this to work, u will need an ATSC converter, and if the station(s) broadcast in HD (high definition) the image will look crap.
If u want hook up to your existing cable provider, look for a Video Out on the set-top box, then add a RF Modulator.
Your original question asked about red/white/yellow RCA connectivity. If that is still your question, then NO you can't make an adapter. You have to convert the RCA signals to radio signals (what the RF modulator does). You can't make one of those.
I don't know of an easy way to do so. I guess you could solder the center conductor to the middle of a 3.5mm plug and the shield to the other conductor. But soldering coax is difficult since you tend to melt the insulation around the center conductor. Is it possible. If you have good soldering skills, I suppose so. Or you could spend $3 on the correct adapter.