Dual-polarization 5G millimeter wave antenna module and mobile equipment with metal frame

Abstract

The invention discloses a dual-polarized 5G millimeter wave antenna module and a mobile device with a metal frame. The dual-polarized 5G millimeter wave antenna module comprises a plurality of antennaunits, each antenna unit comprises a substrate, a first metal layer and a second metal layer are arranged on the substrate, the first metal layer comprises a radiation sheet, the second metal layer is provided with a first slot and a second slot, wherein the first slot is perpendicular to the second slot, a first feed branch knot is arranged in the first slot, a second feed branch knot is arranged in the second slot, and a part of the first slot and a part of the second slot are located under the radiation sheet. The feed structure is simple, the antenna has the advantage of dual polarization, and the EIRP is greatly improved; a PCB can be used as a base body, so that production and assembly are easy, and subsequent integration with a chip is facilitated; the coverage frequency band is wide; the millimeter wave antenna can be combined with a metal shell of mobile equipment, and the radiation performance influence of the millimeter wave antenna under a metal frame of the mobile equipment is solved.

Description

technical field [0001] The invention relates to the field of antenna technology, in particular to a dual-polarized 5G millimeter-wave antenna module and a mobile device with a metal frame. Background technique [0002] As 5G is the research and development focus of the global industry, the development of 5G technology and the formulation of 5G standards have become the consensus of the industry. At the 22nd meeting of ITU-RWP5D held in June 2015, the International Telecommunication Union ITU clarified three main application scenarios of 5G: enhanced mobile broadband, large-scale machine communication, and high-reliability and low-latency communication. These three application scenarios correspond to different key indicators. In the enhanced mobile bandwidth scenario, the user peak speed is 20Gbps, and the minimum user experience speed is 100Mbps. The unique high carrier frequency and large bandwidth characteristics of millimeter wave are the main means to achieve 5G ultra-h...

AI Technical Summary

Problems solved by technology

[0003] The metal frame structure is the mainstream solution in the structural design of mobile phones, which can provide better protection, aesthetics, heat dissipation and user experience, but due to the shielding effect of metal on electromagnetic waves, it will seriously affect the radiation performance of the upper and lower antennas, reducing the The gain of the antenna, so the joint design with the antenna module is of great significance under the condition that the mobile device (such as a mobile phone) is a metal frame

[0004] At present, there are patents or patent applications disclosing some 5G millimeter-wave antenna designs under metal frames, but they have many defects, such as the Chinese invention patent application with the publication number CN 109193133A and the Chinese invention patent application with the publication number CN109193134A. The scheme does not consider the RF front-end integration; for example, the Chinese utility model patent with the announcement number CN 209544619 U and the Chinese invention patent application with the publication number CN 109066079 A have complex feeding structures and are difficult to assemble in actual production; for example, the announcement number is CN207517869U Chinese utility model patent, Chinese utility model patent with notification number CN207781866U, Chinese utility model patent with notification number CN208460981U, and Chinese invention patent application with publication number CN108288757A. The technical solutions are all single-polarization modules, but the current 3GPP In TS38.101-2 5G terminal radio frequency technical specification, dual polarization has obvious advantages in calculating EIRP

According to 3GPP TS38.101-2 5G terminal radio frequency technical specification and TR38.817 terminal radio frequency technical report, 5G mmWave antennas need to cover N257 (26.5-29.5GHz), N258 (24.25-27.25GHz), N260 (37-40GHz) and N261 (27.5-28.35GHz), while the current Qualcomm antenna modules on the market only cover the N257 frequency band (26.5-29.5GHz)

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