Electronic device and antenna adjustment method thereof
The technology of an electronic device and adjustment method is applied in the direction of antenna support/installation device, electrical components, transmission monitoring, etc., and can solve problems such as adverse effects of antennas and effects of antenna radiation characteristics
Active Publication Date: 2014-07-02
ACER INC
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Problems solved by technology
[0003] However, the metal frame has conductivity, and the radiation characteristics of the antenna inside the electronic device are easily affected by the surrounding metal or conductive substances.
Therefore, when the user's finger touches or approaches the metal frame of the electronic device, it is easy to have adverse effects on the antenna inside the electronic device due to extra current or voltage changes
Method used
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[0051] figure 1 It is a functional block diagram of an electronic device according to an embodiment of the present invention. figure 2 It is a schematic diagram of a partial structure of an electronic device according to an embodiment of the present invention. Please refer to figure 1 and figure 2 , the electronic device 10 includes an antenna 11 , a metal frame 12 , a sensing circuit 13 , a control circuit 14 , an adjustment circuit 15 , a grounding element 16 and a signal source 17 . In this embodiment, the electronic device 10 is, for example, a mobile phone (cell phone), a personal digital assistant (Personal Digital Assistant, PDA), a smart phone (smart phone), an electronic book (electronic book), a game machine (game machine) or a tablet computer (Tablet PC) and other portable electronic devices or mobile communication devices
[0052] Such as figure 2 As shown, the ground element 16 is disposed on a surface of the substrate 21 . In addition, the area on the su...
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The invention provides an electronic device and an antenna adjustment method thereof. The electronic device comprises an antenna, a metal frame, a sensing circuit, a control circuit, and at least one adjustment circuit. The metal frame is around a substrate of the electronic device. The sensing circuit is arranged on the substrate, and comprises a number of sensing elements. Each sensing element is used for detecting whether an object is around the metal frame. The sensing circuit decides whether to transmit a number of sensing signals generated by the sensing elements according to the detection results of the sensing element. The control circuit queries a holding posture comparison table according to the sensing signals, and generates a control signal. At least one adjustment circuit is electrically connected with the antenna, and adjusts the resonant frequency of the antenna according to the control signal.
Description
technical field [0001] The present invention relates to an electronic device, and in particular to an electronic device with a metal frame and an antenna adjustment method thereof. Background technique [0002] As the appearance designs of electronic devices become more and more diversified, it is more common to use a metal frame as a part of the housing of the electronic device. Generally speaking, the reason for choosing a metal frame is nothing more than based on the unique texture of metal itself, which is incomparable to ordinary plastic and other materials. [0003] However, the metal frame has conductivity, and the radiation characteristics of the antenna inside the electronic device are easily affected by the surrounding metal or conductive substances. Therefore, when the user's finger touches or approaches the metal frame of the electronic device, it is easy to have adverse effects on the antenna inside the electronic device due to extra current or voltage change. ...
Claims
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IPC IPC(8): H04B1/38H04B17/00H01Q1/22H04B1/3827H04B17/30
Inventor 张志华黄少榆魏婉竹
Owner ACER INC