Antenna device

Abstract

The invention provides an antenna device applied to a mobile electronic device. The mobile electronic device comprises a processing unit. The antenna device comprises an antenna controlled by the processing unit and two flexible circuit board units separated from the antenna. The antenna has two ends at the two opposite sides. Each soft circuit board unit comprises a distance sensor and an induction part which is electrically connected with the distance sensor and is adjacent to one end of the antenna. By means of integrated design that each distance sensor is integrated with the correspondinginduction part to form a corresponding flexible circuit board unit, production and assembly operation is facilitated. The induction part is adjacent to the end of the antenna, and when each sensing element senses approaching of a human body, a sensing signal can be generated, and the distance sensor receives the sensing signal and then sends a notification signal to the processing unit; the processing unit performs controlling to lower output power of the antenna to effectively avoid the influence of electromagnetic radiation on the human body.

Description

technical field [0001] The present invention relates to an antenna device, in particular to an antenna device with a distance sensing function. Background technique [0002] Today's mobile electronic products, such as smart phones and tablet computers, have been widely used in daily life, and the wireless communication transmission function of mobile electronic products can meet various needs of use. However, in the wireless communication transmission function, for example, the electromagnetic radiation of the antenna in the mobile phone will affect human health, so when the human body is close to the antenna of the mobile phone, its SAR (Specific Absorption Rate) value must be reduced and meet the verification specifications. A common practice is to set up sensing pads (Sensor PAD) on both sides close to the antenna, and the sensing pads are respectively connected to a corresponding distance sensor (Proximity Sensor, P-Sensor) by wires. When the human body is close to the a...

AI Technical Summary

Problems solved by technology

Generally speaking, the antenna and processor of the mobile phone are arranged on the substrate, so the substrate must reserve a place for the sensing pad and the distance sensor to be arranged, which increases the design trouble and inconvenience in a limited space.

Moreover, the sensing pad and the distance sensor are additionally connected by physical wires, which makes it difficult to assemble internal circuits. It is worthy of careful study, discussion and improvement by practitioners.

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