Double-frequency high-isolation mobile phone MIMO antenna based on mode orthogonality

Abstract

The invention discloses a dual-frequency high-isolation mobile phone MIMO antenna based on mode orthogonality. The dual-frequency high-isolation mobile phone MIMO antenna comprises a dielectric substrate, two dielectric plates, a first antenna module and a second antenna module, wherein the antenna module is composed of a radiation unit and a decoupling structure, the metal floor is printed on theback of the dielectric substrate; the radiation unit is composed of two radiation branches printed on the two sides of the metal floor, and the inner side faces of the two dielectric plates are printed; the decoupling structure is composed of two branches, and the coupling degree of two resonance points is reduced. According to the structure of the antenna provided by the invention, dual frequency bands are realized through different resonance branches of the antenna, the dual frequency bands cover 3.4 GHz-3.5 GHz of a telecommunication 5G frequency band, 3.5 GHz-3.6 GHz of a Unicom 5G frequency band and 4.8 GHz-4.9 GHz of a mobile 5G frequency band, and a problem of covering 5G signals of three major domestic operators is well solved; the application of a mode orthogonal decoupling modein double frequencies is verified.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a dual-frequency high-isolation mobile phone MIMO antenna based on mode orthogonality. Background technique [0002] In recent years, with the rapid development of wireless communication and the continuous improvement of communication system capacity, the electromagnetic wave propagation environment has become more and more complex. With the improvement of people's quality of life, higher requirements are put forward for wireless mobile communication systems and mobile phones. Different from the traditional communication system, in the MIMO system including space diversity and space multiplexing, multipath effect has become a favorable condition, not only can be used to improve the information transmission rate, in addition, the MIMO system can also use space diversity technology to Ensure the reliability of information transmission. [0003] The fifth generation (5G) mobile c...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a dual-frequency high-isolation mobile phone MIMO antenna based on mode orthogonality for the defects involved in the background technology, and to realize high-isolation MIMO by utilizing the orthogonality of the radiation modes of the antenna elements Antenna technology, at the same time solve the problem that the existing antenna cannot cover the 5G frequency bands of the three major operators at the same time, resulting in a single coverage frequency band or setting up multiple antennas resulting in large space occupation and low channel capacity

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