Antenna mutual-coupling elimination device and method and wire communication device

Abstract

The invention discloses an antenna mutual-coupling elimination device and method and a wire communication device. The antenna mutual-coupling elimination device comprises an interference elimination circuit, wherein the interference elimination circuit is arranged between a pair of coupling antennas, and the interference elimination circuit and a matching circuit of the antenna form a decoupling network. In the antenna mutual-coupling elimination device, the decoupling network jointly formed from the interference elimination circuit and the matching circuit can be used for effectively reducing interference and influence caused by antenna coupling, the antenna radiation efficiency is improved, a far-field pattern of the antenna is changed, the spatial correlation of the antenna is reduced, the demands of a new-generation wireless communication system on channel capacity, data throughput rate and reliability are met, and the spectrum efficiency utilization ratio of the communication system can be improved. Meanwhile, the coupling elimination technology can be suitable for various types of multi-antenna wireless communication terminals, base stations, phased array radars, transceivering assemblies and other communication systems.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to an antenna mutual coupling elimination device, method and wireless communication device. Background technique [0002] With the continuous development of multi-band, miniaturized, and highly integrated wireless communication systems, existing mobile phones and various terminal devices have widely supported communication protocols such as 2G, 3G, LTE, Wi-Fi, and GPS. For different communication protocols, different transceiver antennas need to be configured. These antennas work in the same or similar frequency bands, and often have a large number of overlapping areas. Therefore, there is inevitably co-frequency and adjacent-frequency interference, resulting in enhanced correlation between antennas. , thereby changing its pattern and reducing antenna efficiency and channel throughput. [0003] In addition, the existing mobile phones and communication termina...

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Problems solved by technology

[0008] By making the mutual interference elimination circuit set between a pair of coupled antennas and the matching circuit of the antennas form a decoupling network, the isolation between the antennas can be effectively improved, and it can solve the problem between multiple antennas objectively existing in various communication terminals. The problem of interference between the same frequency and adjacent frequency, without affecting the matching of the antenna, so that the layout of the antenna will become compact and flexible, which can meet the increasingly miniaturized and lightweight layout requirements of terminal products

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