A device and terminal for improving electromagnetic radiation

Abstract

Embodiments of the present invention provide an apparatus for improving electromagnetic radiation. The apparatus comprises four wiring layers which are arranged in a superimposing manner, the four wiring layers are successively a first layer architecture, a second layer architecture, a third layer architecture and a fourth layer architecture, wherein the first layer architecture comprises n snakelike wires, each snakelike wire comprises m sections, and routing directions of two adjacent sections of the snakelike wires are perpendicular to each other; and one head end of the snakelike wire is connected with an input port, other head ends enter the third layer architecture and are short connected by virtue of an interconnection architecture, the tail end of the snakelike wire enters the third layer architecture, the tail end which corresponds to the head end connected with the input port is connected with a flat wire, other tail ends are short connected with one another and connected with an output port. The second layer architecture and the fourth layer architecture comprise a conductive plane and are connected by virtue of a second interconnection architecture. The apparatus is small in occupation area, good in suppression effect and capable of improving the stability of a mobile terminal.

Description

technical field [0001] Embodiments of the present invention relate to but are not limited to smart terminal technology, especially a device and terminal for improving electromagnetic radiation. Background technique [0002] With the increasing number of functional modules of smart handheld communication devices, the signal stability of devices in mobile terminals has gradually become a bottleneck in the field of mobile communication. How to use the limited design space to achieve more and more highly integrated requirements is an urgent problem to be solved at present. To this end, the first problem to be solved is the ability to suppress electromagnetic radiation of device signals. There are several commonly used methods: 1. Add bypass capacitors at the signal source; 2. Add bypass capacitors at the load; 3. Add magnetic beads or inductors on the signal path; 4. Shield. The disadvantages of these methods are: 1. It is impossible to accurately estimate the optimal capacito...

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Problems solved by technology

The disadvantages of these methods are: 1. It is impossible to accurately estimate the optimal capacitor value and capacitor quantity, resulting in excess design margin; 2. The anti-resonance characteristics of energy storage and decoupling capacitors may cause noise suppression failure at other frequency points; 3. .The inductance / magnetic beads used to suppress electromagnetic radiation usually have a large area; 4. The magnetic beads may increase the radiation intensity at certain frequency points; 5. The cost of shielding the entire area of ​​the module is high

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