Multi-mode resonant broadband small metasurface antenna

The invention discloses a multimode resonant broadband small-sized metasurface antenna which is sequentially provided with a metasurface array, a first dielectric substrate, a metal ground and a second dielectric substrate from top to bottom, and a metal strip is arranged on the lower surface of the second dielectric substrate; the cable also comprises a coaxial connector, an inner core of the coaxial connector is connected with the metal strip, and an outer conductor of the coaxial connector is connected with the metal ground; the metasurface array further comprises a plurality of metalized via holes penetrating through the first dielectric substrate, and the metasurface array is connected with the metal ground through the plurality of metalized via holes. According to the antenna, the miniaturization and broadband characteristics of the antenna can be realized at the same time by utilizing a negative-order multi-mode resonance design principle. 本发明公开多模谐振的宽带小型超表面天线，多模谐振的宽带小型超表面天线，由上至下依次设置为超表面阵列、第一介质基板、金属地、第二