Mobile terminal

Abstract

The invention discloses a mobile terminal comprising a metal cover and an antenna module. The metal cover comprises a first metal part, a second metal part, and a coupling gap, wherein the first metal part and the second metal part are partially connected, and the coupling gap is located between the first metal part and the second metal part. The antenna module comprises a circuit board, a capacitor feeding plate, and a tuner. The metal cover covers the circuit board, and is spaced apart from the circuit board by a preset distance. The circuit board comprises a feeding circuit, a grounding circuit, and a system ground electrically connected with the grounding circuit. The capacitor feeding plate and the tuner are arranged at a side, facing the circuit board, of the metal cover. The tuner is fixed to the first metal part, and is disposed at an end, close to the joint of the first metal part and the second metal part, of the coupling gap, and is arranged across the coupling gap to be connected with the second metal part. The capacitor feeding plate is connected in an insulating manner to the second metal part, is disposed at an end, away from the tuner, of the coupling gap, and is electrically connected with the feeding circuit. The grounding circuit is electrically connected with the second metal part, and the system group is electrically connected with the first metal part.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a mobile terminal. Background technique [0002] With the development of wireless communication technology, mobile terminal devices such as mobile phones, tablet computers, and portable multimedia players are widely used in people's lives. The mobile terminal device is usually equipped with an antenna module to transmit and receive wireless signals, so as to support the wireless communication function of the mobile terminal device. [0003] In order to improve and enhance the overall firmness of the product, more and more mobile terminal devices such as smartphones currently use metal casings, such as metal back covers or metal frames, and metal casings can shield or absorb electromagnetic waves to a certain extent. The problem of narrow frequency band and low efficiency With the development of mobile communication technology, mobile terminal equipment needs to cover more and...

AI Technical Summary

Problems solved by technology

[0003] In order to improve and enhance the overall firmness of the product, more and more mobile terminal devices such as smartphones currently use metal casings, such as metal back covers or metal frames, and metal casings can shield or absorb electromagnetic waves to a certain extent. The problem of narrow frequency band and low efficiency With the development of mobile communication technology, mobile terminal equipment needs to cover more and more modes, including GSM / DCS / PCS / WCDMA / TD-SCDMA / LTE, etc. Different mobile communication modes use different frequency band

[0004] In related technologies, mobile terminal equipment needs to place the antenna externally or make the antenna not surrounded by a metal casing through special design. However, this method will limit the radiation space of the antenna on the one hand, thereby limiting the frequency band of the antenna, and on the other hand will affect the mobile phone. The overall aesthetics of the terminal equipment

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