CPC H01Q 1/52 (2013.01) [H01Q 1/48 (2013.01)] | 14 Claims |
1. A noise reduction apparatus, comprising:
an antenna having a transmission and reception bandwidth;
a noise source radiating an electromagnetic wave, wherein frequency of the electromagnetic wave falls within the transmission and reception bandwidth;
an electromagnetic conductor being closer to the antenna than the noise source;
a grounding member disposed at the noise source closer to the antenna and covering the noise source and electrically isolated from the electromagnetic conductor to form a good grounding path to the noise source;
a plastic casing having a receiving space, a plate and a securing structure, the securing structure being disposed on an outer side of the plate, and the receiving space being disposed on an inner side of the plate; and
a circuit board disposed in the receiving space of the plastic casing, with the noise source disposed on the circuit board, with the grounding member disposed in the receiving space of the plastic casing, wherein the circuit board and the grounding member are connected by a plurality of grounding components to achieve grounding.
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