ANTENNA AND METHOD USING TUNING STUB

摘要

A microwave antenna comprises a dielectric substrate (2) with an emitter element (1) and a feed line (4) to the emitter element, and on the substrate underside there is a ground plane (5) for the feed line (4). A separate ground plane for the emitter element (1) is arranged at a larger distance from the substrate (2), and the two ground planes (3, 5) are interconnected electrically (7). The feed line ground plane (5) is shaped with a tuning section (6) extending somewhat in underneath the emitter element, and the tuning section (6) is connected to the rest of the feed line ground plane via a transition section (9). This antenna can be manufactured at low cost, and gives good tuning possibilities for the feed line/emitter element connection.