Antenna device and mobile terminal

Abstract

The invention discloses an antenna device and a mobile terminal. The antenna device comprises a radiator, a feeding source, a first switch assembly and a second switch assembly. A feeding point is arranged on the radiator and is electrically connected with the feeding source which is used for feeding electrical signals into the radiator through the feeding point. One end of the first switch assembly is electrically connected with the feeding point and the other end is grounded. The first switch assembly is used for adjusting low-frequency resonance of the radiator. One end of the second switch assembly is electrically connected with a part where the radiator is isolated with the feeding point, and the other end is grounded. The second switch assembly is used for adjusting middle-frequency resonance or / and the high-frequency resonance of the radiator. The antenna device is provided with multiple middle-frequency frequency bands or / and multiple high-frequency frequency bands and with a multi-frequency band working mode under the action of switch-off or switch-on of the first switch assembly and the second switch assembly, therefore, the antenna device is simple in structure and satisfies requirements of multi-frequency band communication.

Description

technical field [0001] The present invention relates to the communication field, in particular to an antenna device and a mobile terminal. Background technique [0002] At present, only metal wires are used to realize antenna tuning in mobile phones. However, when the structure of the metal wiring in the mobile phone is simple, the internal space of the mobile phone can be saved, but the working frequency band of the antenna due to the simple structure of the metal wiring is relatively small, and it is difficult to meet the multi-band requirements of the mobile terminal. By increasing the metal wiring structure, the working frequency band of the antenna can be increased, but the complex metal wiring will occupy more structural space inside the mobile phone, so there is currently no antenna with a simple structure that can realize multiple frequency bands. Contents of the invention [0003] The invention provides an antenna device and a mobile terminal with a simple struct...

AI Technical Summary

Problems solved by technology

However, when the metal wiring structure in the mobile phone is simple, it can save the internal space of the mobile phone, but the simple structure of the metal wiring leads to relatively few working frequency bands of the antenna, which is difficult to meet the needs of mobile terminals with multiple frequency bands

By increasing the metal wiring structure, the working frequency band of the antenna can be increased, but the complex metal wiring will occupy more structural space inside the mobile phone, resulting in no antenna with a simple structure and multiple frequency bands.

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