Smartwatch

Abstract

The invention relates to a smart watch, which includes a plastic casing, a circuit main board, a battery, a screen, a metal frame and several metal rotating shafts. The plastic casing is provided with an accommodating cavity, and the circuit main board, battery and screen accommodate In the accommodating cavity, the metal frame is a closed annular structure, surrounding the outside of the screen, the metal shaft is fixed on the outside end of the plastic casing, the screen has a back metal, and the circuit board is provided with spaced-apart An antenna module and a second antenna module, the first antenna module is connected to the metal frame, the back metal is connected to the metal frame, the second antenna module is connected to the metal shaft, and the back metal, as a part of the first antenna module, can participate in The antenna radiates, generates high and low frequency resonance, expands the high frequency bandwidth, effectively reduces the influence of the screen and its back metal on the antenna radiation characteristics, and improves the receiving efficiency.

Description

technical field [0001] The invention relates to a smart watch, in particular to a smart watch with an antenna. Background technique [0002] Many smart watches (such as iwatch, Samsung gear) that appear today mostly use a metal frame. The antenna is adjusted by feeding power from the motherboard to the frame, and then switching the ground point of the frame. The efficiency of the antenna is generally not high. When the metal on the back of the screen is grounded to the motherboard, the headroom and height of the bezel antenna are reduced, resulting in lower antenna efficiency. However, if the metal on the back of the screen is not grounded to the motherboard, it will seriously affect the receiving performance of the antenna, affect the quality of calls, and even cause the screen to flicker. [0003] At present, various manufacturers have adopted the following methods, for example: using the watch strap as an antenna, although the efficiency of the free space will be ideal, ...

AI Technical Summary

Problems solved by technology

When the metal on the back of the screen is grounded to the motherboard, the headroom and height of the bezel antenna are reduced, resulting in a lower antenna efficiency

However, if the metal on the back of the screen is not grounded to the motherboard, it will seriously affect the receiving performance of the antenna, affect the quality of the call, and even cause the screen to flicker

[0003] At present, various manufacturers have adopted the following methods, such as: using the watch strap as an antenna, although the efficiency of the free space will be ideal, but the efficiency will become very low after wearing it

The other is to use the frame and back cover as the radiator of the antenna, especially when the back cover participates in radiation, because the watch is close to the arm, the antenna efficiency will become very low

There is another kind, using the frame as the radiator of the antenna, the efficiency should be good in theory, but due to the influence of the screen module and other metal components on the motherboard, the performance of the antenna is still very low

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