Terminals with full metal backshells

Abstract

The invention discloses a terminal with a metal rear housing, relates to the field of radio frequency antennas, and is used for realizing a radio frequency antenna design under the condition of a full-metal rear housing. The full-metal rear housing comprises a first metal structural member and a second metal structural member which are connected with each other in an insulating manner; a metal antenna radiation body is arranged on the inner side of the first metal structural member; a perpendicular projection of the first metal structural member is overlapped with the metal antenna radiation body; a predetermined vertical distance is reserved between the first metal structural member and the metal antenna radiation body; the first metal structural member is electrically connected with themetal antenna radiation body through at least one line; each line is connected in series with a switch; when the switches are turned on, the first metal structural member is conducted with a signal source of the terminal, and the metal antenna radiation body and the first metal structural member which are used as direct radiation bodies of an antenna emit radio frequency signals of a first frequency band group; and when the switches are all turned off, the metal antenna radiation body stimulates the first metal structural member to emit a radio frequency signal of a second frequency band group.

Description

technical field [0001] The invention relates to the field of radio frequency antennas, in particular to a terminal with an all-metal back shell. Background technique [0002] As metal communication terminals are gradually sought after by consumers due to their unique texture and luster, they have become standard configurations for high-end models, and they have begun to spread rapidly to mid- and low-end models. At the same time, communication terminals made of metal casings have become the research and development focus of competing communication terminal manufacturers. [0003] Due to the uniqueness of antenna radiation, the mobile terminal antenna has a direct impact on the antenna performance on the trace area, antenna height, antenna clearance, and antenna avoidance of surrounding metals, which must be guaranteed in actual design. The design trend of the above-mentioned mobile phone makes the design space of the mobile phone antenna continuously shrink, the design heig...

AI Technical Summary

Problems solved by technology

At the same time, due to the advent of the 4G era, the requirements for the bandwidth of mobile phone communication bands are also increasing exponentially, and the bandwidth coverage of mobile phone antennas in the existing design environment has also become a difficulty in mobile phone design.

At present, in the design of mobile phone antennas with all-metal back shells, the direct feeding method of the metal body of the back shell or the coupling excitation method to the metal body is the main design form, both of which can only meet the radio frequency signal transmission of a certain range of bandwidth or frequency requirements, its broadband and multi-frequency performance is limited

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