Overview of UWB Feed

Abstract

This paper briefly introduces the UWB feeds. Firstly, it introduces the basic requirements of the feeds and the performance. Then it introduces the frequencyindependent antenna, traveling wave antenna, combined feeds and tightly coupled antenna. It briefly describes the principles of UWB antenna and introduces the development status. Finally, it is concluded that the phase center of the combined antenna does not vary with the frequency, and combined antenna also has high gain, low sidelobe, which is more suitable for the feed of the reflector antenna.