Eingebaute Strahlerstruktur für einen Millimeterwellenradarsensor

摘要

A compact radar system (100) includes a dielectric substrate (108) having an upper and lower surface. A ground plane (114) is formed on the upper surface (115) of the dielectric substrate (108) and includes a radiating slot (116,117) formed therein. A radar transceiver (118) is located below the dielectric substrate (108) and generates transmit signals. A frequency selective surface (122) spaced above the dielectric substrate includes a radiating aperture (146,148) with a plurality of uniformly spaced holes. The frequency selective surface (122) decreases flow of electromagnetic energy from the radiating slot in one direction towards the transceiver and increases the flow of electromagnetic radiation in an opposite direction away from the transceiver.