A broadband metamaterial unit and a broadband mimo antenna

Abstract

The invention discloses a broadband metamaterial unit and a broadband MIMO antenna, belonging to the technical field of microwave antennas. The resonant ring unit of the present invention includes a resonant ring, a dielectric substrate and a metal floor; the resonant ring includes a circular ring and a cross structure with gaps; the resonant ring unit is applied to an antenna, and two types of MIMO antennas are designed; The MIMO antenna described above has a relatively compact structure, a wider bandwidth and a smaller size.

Description

technical field The invention belongs to the technical field of microwave antennas, and in particular relates to a broadband metamaterial unit and a broadband MIMO antenna. Background technique Multi-input-multi-output (MIMO) technology, as a new type of communication technology in the development of wireless communication technology, has unique advantages in improving system channel capacity and data transmission rate. With the development of mobile terminals in the direction of compact structure and miniaturization, the size and distance between antenna units must be reduced as much as possible. The reduction in unit spacing increases mutual coupling, thereby affecting the radiation characteristics of the antenna. How to improve the isolation between antenna elements in a limited space has become an urgent problem to be solved in the development of MIMO antenna technology. Metamaterials refer to some artificial composite structures with extraordinary physical properties ...

AI Technical Summary

Problems solved by technology

The current planar monopole MIMO antenna cannot simultaneously realize the miniaturization, broadband, compactness, and high isolation performance of the MIMO antenna.

As mentioned above, the main disadvantages in several documents are: the size is too large, the antenna unit is not compact; the antenna bandwidth is narrow or the coupling is strong; the floors of different units are separated, and a unified floor reference voltage cannot be ensured.

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