Anti-interference circuit board and terminal

Abstract

The invention provides an anti-interference circuit board and a terminal. The circuit board specifically comprises a substrate which is provided with a first surface, and the first surface is providedwith a first region for placing a magnetometer; the substrate is internally provided with a plurality of circuit layers, and the plurality of circuit layers are arranged in a stacked manner, for example, the substrate is at least internally provided with a first functional circuit used for generating a magnetic field generated in a first direction and a second functional circuit used for generating a magnetic field generated in a second direction which are stacked; when the positions of the first functional circuit and the second functional circuit are specifically set, the first region is located in the vertical projection of the first functional circuit and the second functional circuit on the first surface. What can be seen from the description is that the first functional circuit andthe second functional circuit are arranged to compensate the interference of the magnetometer in the first region, and the first functional circuit and the second functional circuit are located belowthe magnetometer during arrangement, so that the occupied surface area of the anti-interference circuit board is reduced.

Description

technical field [0001] The present application relates to the technical field of terminals, in particular to an anti-jamming circuit board and a terminal. Background technique [0002] The magnetic environment in the current mobile phone architecture scheme is relatively complicated. The layout of the magnetometer as a geomagnetic field detection device is limited in the whole machine environment. It is difficult to find a position with little magnetic interference on the PCB. It is necessary to use a PCB design hardware compensation solution to offset part of the magnetic field. interference. In the prior art, when compensating the magnetometer, such as figure 1 As shown in , the anti-jamming circuit board 1 is respectively provided with a coil 3 on both sides of the magnetometer 2 , and the magnetometer 2 is compensated by the coil 3 . However, when this method is adopted, a large area on the anti-jamming circuit board 1 is occupied, which reduces the places where other ...

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Problems solved by technology

[0002] The magnetic environment in the current mobile phone architecture scheme is relatively complicated. The layout of the magnetometer as a geomagnetic field detection device is limited in the whole machine environment. It is difficult to find a position with little magnetic interference on the PCB. It is necessary to use a PCB design hardware compensation solution to offset part of the magnetic field. interference

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