Triple-frequency MIMO antenna applied to 5G mobile terminal

Abstract

The invention discloses a triple-frequency MIMO antenna applied to a 5G mobile terminal. The antenna comprises a main substrate, the main substrate is provided with two sub-substrates which are perpendicular to the main substrate, the two sub-substrates are arranged in parallel, the two sub-substrates are provided with antenna units which are symmetrical in pairs, each antenna unit comprises an F-type radiation element, a zigzag coupling radiation line, and an L-type feed element, the F-type radiation element and the zigzag coupling radiation line are printed on the outer wall of the sub-substrate, the F-type radiation element comprises a first upper branch used for generating first resonance and a first lower branch used for generating second resonance, the first upper branch and the first lower branch are grounded through a common end, and the zigzag coupling radiation line is inserted into a gap between the first upper branch and the first lower branch, and are coupled with the firstupper branch and the first lower branch respectively to generate thirdresonance. And the L-shaped feed element is printed on the inner wall of the sub-substrate, and the L-shaped feed element is connected with the SMA connector on the main substrate through a feeder line. The antenna can increase the working frequency band, and is simple in structure and small in occupied space.

Description

technical field [0001] The present invention relates to the technical field of antennas, in particular to a triple-band MIMO antenna applied to 5G mobile terminals. Background technique [0002] In recent years, mobile communication technology and industry are entering the development stage of the fifth generation mobile communication (5G). Smartphones, as the most common mobile terminals, are undergoing waves of technological innovation. 5G will meet the requirements of high speed, low delay, and high reliability. People need communication equipment with high traffic density and ultra-high mobility, which brings new challenges to terminal antennas. In a wireless communication system, it is necessary to convert the guided wave energy from the transmitter into radio waves, or convert radio waves into guided wave energy, and the device used to radiate and receive radio waves is called an antenna. The modulated high-frequency current energy (or guided wave energy) generated b...

AI Technical Summary

Problems solved by technology

5G will meet the requirements of high speed, low latency, and high reliability. People need communication equipment with high traffic density and ultra-high mobility, which brings new challenges to terminal antennas.

Although the coexistence of coupled feed arm and parasitic arm can realize multi-band, it takes up a lot of space and is not suitable for the small size and compact components of smart terminals.

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