The invention relates to an all-
metal partial Maxwell
fisheye lens wide-angle coverage multi-beam antenna, which belongs to the technical field of
lens antennas. The multi-beam lens antenna cuts a complete two-dimensional Maxwell
fisheye lens along a straight line and adopts a feed source array arranged along a straight line, and combines port switching and frequency switching to realize beam wide-angle scanning. There are two
assembly modes for the antenna structure. The first
assembly mode uses the upper
metal cover, the lower
metal cover, the upper half of the boss type six-port network, the
lower half of the six-port network and the inclined metal ring for installation and connection; the second
assembly mode uses the lower metal cover The board, the upper half of the inclined six-port network, the
lower half of the six-port network and the flat metal ring are installed and connected. In the two assembly
modes, the elevation beam pointing is 0° and 20° respectively, the
azimuth beam scanning range exceeds ±90°, and the working frequency range is 33‑36GHz. In a limited space, the beam coverage is improved; at the same time, the feed is arranged in a straight line, which is easy to integrate; the volume is reduced by
cutting the lens; it is made of all metal, and the
radiation efficiency is high.