Mobile terminal antenna device

Abstract

The invention discloses a mobile terminal antenna device, and relates to the technical field of communication antennas. The mobile terminal antenna device comprises a first radiator; the first radiator is connected with the first signal output end of a processor through a signal source; one end of a second radiator is connected with the first radiator through a switch circuit, and the other end ofthe second radiator is grounded through a first active switch; and the second signal output end and the third signal output end of the processor are connected with the control signal input ends of the switch circuit and the first active switch respectively. Through the tuning design of a multi-antenna body by the switch circuit, the design that the parasitic frequency band is tunable, the antennaradiators are reconfigurable and multiple antennas are compatible in a low-radiation environment is realized, and multiple tunable schemes can be provided in a parasitic antenna and reconfigurable radiator mode, so that the broadband/multi-frequency design of the antennas and the near-distance high-isolation design of the multiple antennas are realized.

Description

technical field [0001] The invention belongs to the technical field of communication antennas, in particular to a mobile terminal antenna device. Background technique [0002] With the development of communication technology and Internet of Things technology, the carrier of mobile communication terminals has penetrated from mobile phones to various traditional industries, such as wearable products, IoT monitoring equipment, smart homes, etc. While the number of products requiring mobile communication functions increases, product design also faces diversified design requirements for terminals. Facing the design environment of miniaturized portable products or all-metal appearance products, the demand for miniaturization and broadband design of antennas is becoming increasingly obvious. [0003] As a conversion device for electromagnetic signals, the antenna design parameters such as radiation efficiency and coverage bandwidth depend on the clearance of the antenna and the su...

AI Technical Summary

Problems solved by technology

But there are design problems: the parasitic coupling uses a grounded parasitic body and the antenna body to achieve parasitic through electromagnetic radiation, but it cannot achieve multi-frequency tuning and has certain requirements for the coupling area of ​​the antenna body and parasitic branches, which is not suitable for miniaturized antenna design; The antenna active switch / variable capacitor can only tune the frequency band of a single antenna radiator, and cannot realize the simultaneous broadband design, and its design is still limited in the harsher environment

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