Well, speaking for myself, and off the top of my head, fly the full standard missed approach. Then follow lost comm proceedures. Squawk 7600. This is pretty rare in this day and age, and I would expect any controller to add a buffer of extra separation around your flight. We would expect you to land at the nearest suitable aerodrome, probably either the one you've just overshot from, or a nearby alternate. In a radar environment you will be watched very closely and the controllers will be keeping many options open concerning other traffic, until well after it seems obvious what you're going to do.
Keep transmitting your intentions blind from time to time, using the frequency appropriate for the airspace you are in.
If you can use a phone in flight, please do so. Phone the tower, or the approach control centre serving that aerodrome. Many's the time I've given a landing clearance on the phone, but not usually to commercial airliners. The radios just don't fail that often. If they have, we will assume you are quite likely to have additional electronics problems, and are also likely to transmit blind to you, your position, what we think you are likely to do (and that it's ok to do so) the weather etc, and accord you the appropriate priority.