Radio shielding device in mobile phone

Abstract

The invention discloses a radiofrequency shielding device inside a mobile phone, which comprises that: a support type PIFA antenna support is arranged on the top or the tail end of a mobile phone mainboard; the side wall near the antenna support is provided with a shielding support and a shielding cover; the lengths of the shielding support and the shielding cover are equivalent to that of the antenna support; the shielding cover is covered on the shielding support; the shielding support keeps close to a copper exposed area of the mainboard, is earthed and is arranged close to the rear wall of the antenna support to ensure that one folding edge of the shielding cover near the antenna support can keep close to the rear wall of the antenna support and extend upward along the rear wall of the antenna support until the top of the antenna support to form a shielding wall which surrounds the antenna and radiates toward the interior of the mobile phone; and other three folding edges of the shielding cover are clamped on the shielding support. The invention reduces the interference of radiofrequency signals of the antenna of the mobile phone to other interior sensitive devices by rationally adjusting the layout of the antenna support, the shielding support and the shielding cover.

Description

Technical field [0001] The invention relates to a shielding technology of a built-in antenna of a mobile phone, in particular to a radio frequency shielding device inside a mobile phone. Background technique [0002] The rapid development of modern wireless communication has put forward higher and higher requirements for the design of wireless communication equipment, and the miniaturization of mobile phones has become a trend. The built-in antenna of the mobile phone has the advantages of not being easily damaged and low radiation to the human body, and has become the first choice for the design of mobile phone antennas. [0003] A single-piece or two-piece metal shielding cover grounded by Surface Mounted Technology (SMT) is generally used inside the mobile phone to shield sensitive devices to prevent external electromagnetic field interference or internal electromagnetic field radiation. When the antenna is placed inside the mobile phone, the distance between the antenna and t...

AI Technical Summary

Problems solved by technology

Some devices, such as subscriber identity module (Subscriber Identity Model, hereinafter referred to as SIM) card holder, Tflash card holder, etc., are not easy to shield because of their large structural size, and radio frequency radiation will have a direct impact on these devices: the most common one is the SIM card during a call. Problems such as dropped card, unstable signal, etc.

In order to avoid these problems, sensitive devices such as SIM card holders often need to be placed as far away from the built-in antenna as possible in the stacking design of mobile phone cores, which brings inconvenience to the design and use; if sensitive devices such as SIM card holders are shielded with shielding, The required space is large, which affects the appearance design and user use, and also increases the cost

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