Slot antenna and mobile terminal

Abstract

The embodiments of the invention provide a slot antenna and a mobile terminal. The slot antenna comprises a metal block, a metal frame, at least two grounding sheets and at least one antenna assembly. The antenna assembly comprises an antenna feed source, an antenna unit and at least two matched networks. The metal frame is arranged along the periphery of the metal block and forms a slit with the metal block; the at least two grounding sheets are arranged in the slit to enable the metal frame and the metal block to be grounded, the at least two grounding sheets are respectively arranged at the first side edge and the second side edge of the metal frame, and the first side edge and the second side edge are in opposite arrangement; and the antenna assembly is arranged in the slit, the antenna feed source is arranged between the metal block and the antenna unit, and the matched networks are arranged between the antenna unit and the metal frame. The slot antenna is simple in structure, does not require complex grounding matching and is quite small in matching loss, and at the same time, the antenna assembly enables a high-frequency resonance mode and a high-frequency resonance mode to be both taken into consideration through the at least two matched networks.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a slot antenna and a mobile terminal. Background technique [0002] As users pursue the metal texture of mobile terminals, mobile terminals with metal middle frames pose a huge challenge to the bandwidth and design complexity of the antenna, especially when the metal middle frame cannot be broken. [0003] At present, the solutions for metal middle frames without breakpoints all use slot antennas and their evolution, but this is only a general principle. In terms of specific design and implementation, the design complexity is still high, and it is difficult to take into account various frequency bands at the same time. Problems such as large matching loss and insufficient bandwidth. [0004] In the existing scheme, in order to take into account each frequency band, a topological structure of one feed source and one grounding point can be used to generate better low-frequency re...

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Problems solved by technology

[0003] At present, the solutions for metal middle frames without breakpoints all use slot antennas and their evolution, but this is only a general principle. In terms of specific design and implementation, the design complexity is still high, and it is difficult to take into account various frequency bands at the same time. Problems such as large matching loss and insufficient bandwidth

[0004] In the existing scheme, in order to take into account each frequency band, a topological structure of one feed source and one grounding point can be used to generate better low-frequency resonance, while multiple grounding points are used for the high-frequency band, and the grounding position is different from that of the low-frequency topology. Similarly, the mobile terminal using this scheme adopts an extremely complex ground matching network. Although the performance of low frequency and high frequency is taken into account, there are disadvantages such as complex matching, large matching loss, mutual interference, and reduced antenna radiation efficiency.

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