sidelobersniveau

Sidelobersniveau is a term used in signal processing and antenna theory. It refers to the ratio of the power received in the main lobe of an antenna's radiation pattern to the power received in its sidelobes. The main lobe is the direction of maximum sensitivity and radiation for an antenna, while sidelobes are smaller lobes that radiate in other directions. A high sidelobersniveau indicates that a significant portion of the antenna's power is being transmitted or received in unwanted directions, which can lead to interference and reduced signal quality. Conversely, a low sidelobersniveau means the antenna is more directive, focusing its energy primarily in the desired direction.

Antenna designers strive to minimize sidelobes for various applications. In radar systems, high sidelobes can cause false targets to be detected, while in communication systems, they can lead to interference with other users. Techniques such as tapering the excitation of antenna elements or using specific antenna array configurations can be employed to reduce sidelobe levels. The measurement and analysis of sidelobes are crucial for characterizing antenna performance and ensuring its suitability for a given application. The exact definition and measurement of sidelobersniveau can vary slightly depending on the specific context and the type of antenna being considered.