An antenna device with separate coupling and feeding

Abstract

The present invention relates to an antenna device, in particular to an antenna device with separate coupling and feeding. It includes a metal bracket for a motherboard or a display screen, a metal frame, the metal frame includes a short side, the metal frame is provided with at least one breakpoint on the short side, and at least one feed pin connected to the front end of the radio frequency, and is characterized in that: It also includes: a high-frequency metal arm close to the feed pin and a low-frequency metal arm far away from the feed pin formed by separating the short sides of the metal frame by breakpoints; an antenna coupling unit, including a longer low-frequency a coupling branch and a shorter high-frequency coupling branch located on the side of the low-frequency coupling branch close to the short side of the metal frame, the end of the low-frequency coupling branch is close to the low-frequency metal arm, and the high-frequency coupling branch is close to the high-frequency metal arm arm. It has better bandwidth and is easy to debug.

Description

Technical field: [0001] The present invention relates to an antenna device, in particular to an antenna device with separate coupling and feeding. Background technique: [0002] Compared with mobile terminals with ordinary plastic shells, users prefer mobile terminals with metal texture, and the problem of antenna signals caused by this has always been a problem that plagues the industry. [0003] At present, there are three effective solutions: the antenna directly feeds the side breakpoint of the metal frame, the antenna directly feeds the metal frame side bottom breakpoint, and the antenna couples the bottom breakpoint of the metal frame. Each of these solutions has several specific implementations. [0004] As disclosed in the Chinese invention patent (Application No.: 201310038945.8), a coupling-feed antenna device for a mobile terminal adopts a breakpoint method at the bottom edge of the antenna coupling metal frame, which only has a low-frequency coupling unit and a ...

AI Technical Summary

Problems solved by technology

[0004] As disclosed in the Chinese invention patent (Application No.: 201310038945.8), a coupling-feed antenna device for a mobile terminal adopts a breakpoint method at the bottom edge of the antenna coupling metal frame, which only has a low-frequency coupling unit and a grounded high-frequency The high-frequency parasitic unit, and only the low-frequency coupling unit is close to the coupling metal frame, and the feed point is on the same side as the low-frequency coupling metal arm. It is the same as the way that the antenna directly feeds the side bottom breakpoint of the metal frame, and has the disadvantages of insufficient bandwidth and difficult debugging; The way that the antenna directly feeds the breakpoint on the side of the metal frame also has the disadvantage of seriously degrading the communication quality when it is held in the hand.

Images