Double-frequency four-unit millimeter wave microstrip slot MIMO antenna

Abstract

A double-frequency four-unit millimeter wave microstrip slot MIMO antenna comprises a rectangular dielectric substrate. Four antenna units with a same structure are arranged on an upper surface of therectangular dielectric substrate, and a metal grounding plate is laid on a lower surface of the rectangular dielectric substrate. Each antenna unit comprises a rectangular metal arm printed on the upper surface of the rectangular dielectric substrate. A short side of the rectangular metal arm is superposed with an edge of the dielectric substrate, a long side of the rectangular metal arm extendsinto the upper surface of the dielectric substrate, a T-shaped structural gap is etched in the metal grounding plate, the T-shaped structural gap is orthogonal to the rectangular metal arm, and a T-shaped head part is close to the edge of the rectangular dielectric substrate. The four antenna units are rotatably and symmetrically arranged at 90 degrees about a center of the upper surface of the rectangular dielectric substrate. By using the microstrip slot antenna structure based on a deformation slot, a millimeter wave antenna design is realized, the microstrip slot millimeter wave antenna can realize resonance at two frequency points, and an isolation degree between antenna ports of each unit is relatively high.

Description

technical field [0001] The invention relates to a millimeter-wave MIMO antenna, in particular to a dual-frequency four-unit millimeter-wave microstrip slot MIMO antenna. Background technique [0002] Since the beginning of the 1980s, the wireless communication system has developed rapidly, from the simple voice system undertaken by the initial (1G) system to the current advanced mobile broadband multimedia system (4G). With the rapid development of the global Internet and mobile communications, the popularity of mobile devices such as smartphones and tablet computers has led to a sharp increase in the number of data traffic and mobile device connections. It is estimated that by 2025, global data traffic will reach the current 200-fold increase. Mobile terminals The number will exceed 10 billion units. In the face of the explosive development of information and data, communication technology can no longer meet the needs of merely changing human life, but will further change ...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a dual-frequency four-unit millimeter-wave microstrip slot for the problems that the microstrip slot antenna in the prior art does not realize millimeter wave design, there are not many operating frequency points, and the isolation degree of each unit antenna port is not high. MIMO antenna, capable of realizing dual-frequency millimeter-wave microstrip slot antenna, and high isolation between the ports of each antenna unit

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