Asymptotic theory, design and efficiency of array-fed reflector antennas

Abstract

Asymptotic theory based on geometrical optics and physical optics is developed for 3D array-fed reflector antenna with an offset parabolic reflector. Relationships between parameters of the antenna structure and its performances are presented. Procedures of a feed array design and a cluster design are described. Radiation performances are simulated and discussed. Quality of the antenna with electrical beam steering is considered in terms of aperture efficiency and element use efficiency. Quality of the antenna with a contoured beam or multiple beams is proposed to describe in terms of coverage efficiency.

Self-Stabilizing Switched Beam Offset Reflector (3SBOR) Antenna: 10GHz Prototype Antenna Solution for Mobile Radar and Communication Applications

“…This RF switch will provide more than sufficient switch speed at 10 GHz. It is to be noted that light radar system such as the MStar-V4 (according to specs sheet [7]) have a transmit power of less than 4 watts. While this is a generic switch, a purpose specific switch would provide improved performance for a given system.…”