Double-antenna MIMO system suitable for modern communication system terminal

Abstract

The invention discloses a double-antenna MIMO system suitable for a modern communication system terminal. The double-antenna MIMO system comprises a dielectric plate, antenna units which are identical in structure and are symmetrically arranged; the antenna units are arranged on the dielectric plate; each antenna unit includes a first antenna segment, a second antenna segment, a third antenna segment, a fourth antenna segment, a fifth antenna segment and a feeder. According to the double-antenna MIMO system of the invention, the antennas provided by the invention are very small in size; the direct-connection interval of the antenna units is small, and therefore, the inner space of the system can be utilized maximally, and the coupling of direct connection of the antennas can be decreased, and the overall performance of the antenna array can be enhanced. The MIMO system of the invention can work under multiple frequency bands, has excellent radiation performance and high stability. With the MIMO system adopted, high isolation and correlation coefficient between the antennas can be realized.

Description

technical field [0001] The invention discloses a dual-antenna MIMO system suitable for modern communication system terminals, and relates to the technical field of antennas. Background technique [0002] The antenna is one of the most important components in the field of wireless communication. Its main function is to receive and transmit electromagnetic waves. In recent years, with the rapid development of wireless communication services and the high integration of integrated circuits, the communication system has gradually become smaller. However, the most important antenna in wireless communication cannot be miniaturized very well. The traditional wireless communication system basically adopts a single-input single-output (SISO) system. However, the SISO system has an unbreakable bottleneck in channel capacity. —Shannon capacity limitation, as well as the existence of multipath effects in mobile communication systems and the improvement of link stability, people have prop...

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Problems solved by technology

[0003] In the MIMO antenna system design, the number and spacing of antennas are very important parameters. For the terminal, the half-wavelength spacing is enough to ensure the fee-related fading, and two antennas may be used at most. However, for commonly used mobile terminals, the In other words, the overall size of the equipment is small, and there is no guarantee that there is enough space. The coupling between the antenna elements is too strong, which affects the performance of the overall antenna array, and the utilization rate of the internal space is also relatively poor. These are the problems that need to be solved urgently.

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