My neighbor put a small satellite antenna in front of my door. What should I use to separate it?

This is not recommended to be separated. Because this will not only affect neighborhood relations, but also be prone to danger.

Satellite antenna, usually called cauldron, is a metal paraboloid, which is responsible for reflecting satellite signals to the feed and tuner located in the focus. The function of satellite antenna is to collect weak signals from satellites and remove noise as much as possible. Most antennas are usually paraboloids, and some multi-focus antennas are composed of spherical surfaces and paraboloids.