A radio frequency front-end circuit and mobile terminal

Abstract

The present invention provides a radio frequency front-end circuit and a mobile terminal. The circuit includes: a first double-pole double-throw switch; a first signal receiving circuit, which is connected to one of the first antenna and the second antenna through the first double-pole double-throw switch, and receives signals through the connected antenna; The second double-pole double-throw switch; the second signal receiving circuit is connected to one of the third antenna and the fourth antenna through the second double-pole double-throw switch, and receives signals through the connected antenna; the third double-pole The double-throw switch is connected with the first double-pole double-throw switch and the second double-pole double-throw switch respectively; the first radio frequency circuit is connected with the third double-pole double-throw switch, including: a signal receiving mode or a signal transmitting mode; the second The radio frequency circuit, connected with the third double-pole double-throw switch, includes: a signal receiving mode or a signal transmitting mode. The circuit design of the present invention is simple, and on the basis of realizing signal transmission and / or reception, the radio frequency layout and wiring can be shortened, thereby reducing path loss.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of terminal applications, and in particular, to a radio frequency front-end circuit and a mobile terminal. Background technique [0002] With the rapid development of Internet communication technology and the continuous popularization of mobile smart terminals, users' demands for data traffic are also increasing. The transmission rate of 4G ranges from 100Mbps to 1Gbps, and the peak transmission rate of 5G NR can reach 20Gbps. The increase in rate requires 5G to have 4*4 Multiple Input Multiple Output (MIMO) key technology. [0003] like figure 1 Shown is a schematic diagram of the structure of the RF front-end circuit of 5G mobile terminal equipment. The circuit architecture is used to realize one transmitter, four receivers, 1T4R, and two transmitters, four receivers, 2T4R. Among them, the layout of 5G mobile terminal equipment directly affects the path loss. ,like figure 1 As show...

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a radio frequency front-end circuit and a mobile terminal, so as to solve the problem of the existing radio frequency front-end circuit structure of 5G mobile terminal equipment, whose wiring is long, resulting in high path loss

Images