Abstract
In this letter, a passive metasurface for gain enhancement of the wide-angle millimeter-wave (mm-wave) multibeam array antenna (MBA) is proposed, and its core includes the wide-angle huygens' unit cell and the point-to-point phase compensation (PPC) method. The huygens' unit cell can achieve high transmission performance of the TM-wave in the range of ±70°. The PPC is to map all the beams of the MBA onto the phase modulation plane (PMP), and then block the PMP, that is, each beam corresponds to an independent block region, and each block region can adjust the phase of associated beam independently. Based on the proposed metasurface, the application for improving the beam performance of the MBA is implemented. It can realize the gain enhancement in the range of the beam pointing angle from −55° to +57°. The gain difference between the central beam and the edge beam is 2.69 dBi, and the gain enhancement range is 7.53 to 8.04 dBi.
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