摘要：【中文】本发明公开一种基于F‑P腔的四极化MIMO天线，包括金属地板，底层介质基板，第一、二激励天线，第三、四激励天线，介质腔，上层介质基板，周期性金属贴片；上层介质基板与周期性金属贴片共同组成部分反射表面；部分反射表面、介质腔与金属地板、底层介质基板共同构成F‑P腔；部分反射表面构成F‑P腔的一端，金属地板和底层介质基板构成F‑P腔的另一端；第一、二激励天线，第三、四激励天线设置于介质腔内部。其中第一、二激励天线激励形成一个双极化微带贴片天线；第三、四激励天线激励形成两个正交的电偶极子天线。本发明所提出的技术方案可以充分利用天线结构，获得一种紧凑型、多极化、高增益MIMO天线设计。 【EN】The invention discloses a quadrapole MIMO antenna based on an F-P cavity, which comprises a metal floor, a bottom layer dielectric substrate, a first excitation antenna, a second excitation antenna, a third excitation antenna, a fourth excitation antenna, a dielectric cavity, an upper layer dielectric substrate and a periodic metal patch, wherein the bottom layer dielectric substrate is arranged on the metal floor; the upper dielectric substrate and the periodic metal patch jointly form a part of reflecting surface; the partial reflection surface and the medium cavity, the metal floor and the bottom layer medium substrate jointly form an F-P cavity; the partial reflection surface forms one end of the F-P cavity, and the metal floor and the bottom layer medium substrate form the other end of the F-P cavity; the first excitation antenna, the second excitation antenna, the third excitation antenna and the fourth excitation antenna are arranged in the dielectric cavity. The first excitation antenna and the second excitation antenna are excited to form a dual-polarized microstrip patch antenna; the third and the fourth excitation antennas are excited to form two orthogonal electric dipole antennas. The technical scheme provided by the invention can fully utilize the antenna structure to obtain a compact multi-polarization high-gain MIMO antenna design.