Description

A feed irradiation lens antenna, or simply a lens antenna, uses a dielectric or metallic lens to focus or collimate radio waves, similar to how an optical lens focuses light. It consists of a feed antenna (like a horn or patch antenna) and a lens made of a material that allows electromagnetic waves to pass through. The lens bends the radio waves, either converging them into a focused beam or expanding them into a wider pattern, depending on the lens design.