MIMO antenna

Abstract

The invention discloses an MIMO antenna. The antenna comprises a diversity antenna, a GPS and a WIFI antenna which are arranged on the back surface of a metal frame; a gap I and a gap II are formed inthe upper parts of a left frame and a right frame of the metal frame; the GPS and the WIFI antenna are arranged at the upper left corner of the metal frame facing the gap I; a PCB is mounted on the inner side of the back surface of the metal frame; an isolation degree adjusting feed point I and an isolation degree adjusting feed point II are arranged on PCBs between the GPS and the diversity antenna and between the WIFI antenna and the diversity antenna; and the isolation degree adjusting feed point I and the isolation degree adjusting feed point II are electrically connected with the diversity antenna, the GPS and the WIFI antenna. A metal structure is used as the antenna, and the antenna is appropriately slotted, so that the area of the antenna is reduced, and different frequency bandsrequired by the antenna are met; and through reasonable antenna layout and change of a form of the adjacent antennas, the antenna mutual coupling is improved, and the antenna efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a MIMO antenna. Background technique [0002] With the rapid development of communication technology, users have put forward higher requirements for the performance of mobile communication systems, and are constantly pursuing the miniaturization and portability of mobile devices; therefore, MIMO antennas with multiple inputs and outputs have become the best choice for wireless communications . However, due to the small space of the mobile phone, there is an inevitable coupling between the antenna elements, which weakens the advantage of the MIMO antenna in terms of channel capacity. [0003] The existing improvement technology is to slot in the metal frame, increase the number of antennas or increase the bandwidth through multi-switch tuning; these two improvement measures are greatly affected by the limitation of the frame structure, and the coupling between multip...

AI Technical Summary

Problems solved by technology

However, due to the small space of the mobile phone, there is an inevitable coupling between the antenna elements, which weakens the advantage of the MIMO antenna in terms of channel capacity.

[0003] The existing improvement technology is to slot in the metal frame, increase the number of antennas or increase the bandwidth through multi-switch tuning; these two improvement measures are greatly affected by the limitation of the frame structure, and the coupling between multiple antennas affects the performance of the antenna; and the mobile phone The internal antenna gap is narrow, the choice of feed point and switch position is limited, and at the same time, the switch has loss and tuning is difficult

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