What does a microwave antenna do?

When microwave ovens are used according to instructions, there is no evidence that they pose a health risk to people . In the US, federal standards limit the amount of RF radiation that can leak from a microwave oven to a level far below what would harm people.

The Five Types of Microwave Antennas and What They’re Used For

Microwave antenna is used for radiating microwave signal into space and receiving microwave signal from space . Microwave antenna acts as a transition region between free space and guiding structure like a transmission line in order to communicate between two or more locations.

A horn antenna or microwave horn is an antenna that consists of a flaring metal waveguide shaped like a horn to direct radio waves in a beam. Horns are widely used as antennas at UHF and microwave frequencies, above 300 MHz.