A four-antenna system for multi-band coverage applied to 5G mobile terminals

Abstract

The invention discloses a multi-band coverage four-antenna system applied to a 5G mobile terminal and belongs to the field of antenna design. The system is characterized in that a first type of radiation units cover frequency bands of LTE700, GSM850, GSM900, GPS, DCS, PCS, UMTS, LTE2300, LTE2500, band 42 and the like; a second type of radiation units cover frequency bands of GPS, DCS, PCS, UMTS, LTE2300, LTE250, band42 and 5G IMS; coupling of the two radiation units in the first type of radiation units is decoupled through absorption of floor current by the two radiation units of the second type of radiation units; the interiors of the second type of radiation units are decoupled through distance; and the first type of radiation units and the second type of radiation units are decoupled through a matching circuit.

Description

technical field [0001] The invention belongs to the field of antenna design of wireless communication technology, and relates to a four-antenna system applied to multi-band coverage of 5G mobile terminals. Background technique [0002] Today's society is a society of information explosion. It is currently in the fourth-generation mobile communication period and is preparing to move towards the fifth-generation mobile communication system. Different communication systems correspond to different communication frequencies. 2G Global System for Mobile Communications (GSM850: 824- 894MHz, GSM900: 880-960MHz), Digital Cellular System (DCS: 1710-1880MHz) and Personal Communication System (PCS: 1850-1990MHz), 3G Mobile Communication System Universal Mobile Communication System (UMTS: 1920-2170MHz), 4G Mobile The LTE system of the communication system (LTE700: 704-787MHz, LTE2300: 2300-2400MHz, LTE2500: 2500-2690MHz), and the frequency band of the 5G mobile communication system (3300...

AI Technical Summary

Problems solved by technology

For a long period of time in the future, 2G / 3G / 4 / 5G mobile communication systems will coexist for a long time. For mobile terminals, more and more frequency bands need to be covered, and antenna design is becoming more and more difficult. For 5G For communication, multi-antenna has become an inevitable trend. In the already narrow terminal antenna design area, more antennas need to be made, which makes the antenna design more difficult. For multi-antenna, the coupling between antennas will affect the The quality of communication has a very large impact, and it is becoming more and more urgent to solve the coupling between multiple antennas

[0003] By searching the antenna patents, it is found that there are very few four-antennas. The patent [CN103682596A] realizes a four-antenna system that can cover DCS, PCS, UMTS, LTE2300 and LTE2500 at the same time. However, these four antennas cannot cover LTE700, GSM850, GSM900 and other frequency bands cannot cover GPS and some 5G frequency bands well. For future 5G multi-antennas, more frequency bands need to be covered. The literature [Four LTE low-band smartphone antennas and their MIMO performance with user's hand presence Kin-Lu Wong, et al., "Microwave and Optical Technology Letters", Volume 52, September 2016,] realized the simultaneous coverage of GSM850, GSM900 four-antenna and LTE700 dual-antenna, but for DCS , PCS, UMTS, LTE2300 and LTE2500 frequency bands are not covered, not to mention the 5G communication frequency band

Images