Patent ID: 7817438

Claim:
A transceiver module, comprising: an adaptor; and a printed circuit board connected with the adaptor, comprising: a first signal layer, comprising: a first transmitter circuit region including a first transmitter circuit grounding portion; and a first receiver circuit region including a first receiver circuit grounding portion; a second signal layer, comprising: a second transmitter circuit region including a second transmitter circuit grounding portion; and a second receiver circuit region including a second receiver circuit grounding portion wherein the first transmitter circuit grounding portion is conducted with the second transmitter circuit grounding portion, and the first receiver circuit grounding portion is conducted with the second receiver circuit grounding portion; and a grounding layer, located between the first signal layer and the second signal layer and comprising a third receiver circuit grounding portion electrically connected with the first receiver circuit grounding portion and the second receiver circuit grounding portion; wherein a projection area of the third receiver circuit grounding portion upon the first signal layer covers the first transmitter circuit region and the first receiver circuit region, and the third receiver circuit grounding portion is electrically connected with a grounding of the adaptor.