TY - GEN
T1 - Graphene-based EMI shielding for vertical noise coupling reduction in 3D mixed-signal system
AU - Kim, Kiyeong
AU - Koo, Kyoungchoul
AU - Hong, Seulki
AU - Kim, Jonghoon
AU - Cho, Byungjin
AU - Kim, Joungho
PY - 2012
Y1 - 2012
N2 - Vertical noise coupling caused by the near-field coupling between the RF/analog IC and logic IC is a severe problem in 3D mixed-signal systems. To reduce the vertical noise coupling, graphene is an appropriate material due to its inherent characteristics such as very low thickness, high flexibility, high mechanical strength, and EMI absorbing characteristic. Especially, the EMI absorbing characteristic is an important property as the shield to prevent the vertical noise coupling, as it reduces the re-coupling of the reflected EMI by the shield into other ICs. We measure the reduction of the vertical noise coupling by the mono-layer graphene shield in the 3D mixed-signal system composed of a low noise amplifier (LNA), an on-chip switching model DC-DC converter, and the mono-layer graphene in the frequency and time domain. Through the measurement results, we observed that the mono-layer graphene can maximally reduce the vertical noise coupling by -17 dB in the frequency domain. Additionally, the vertically coupled noise is reduced by 25% in the time domain measurement
AB - Vertical noise coupling caused by the near-field coupling between the RF/analog IC and logic IC is a severe problem in 3D mixed-signal systems. To reduce the vertical noise coupling, graphene is an appropriate material due to its inherent characteristics such as very low thickness, high flexibility, high mechanical strength, and EMI absorbing characteristic. Especially, the EMI absorbing characteristic is an important property as the shield to prevent the vertical noise coupling, as it reduces the re-coupling of the reflected EMI by the shield into other ICs. We measure the reduction of the vertical noise coupling by the mono-layer graphene shield in the 3D mixed-signal system composed of a low noise amplifier (LNA), an on-chip switching model DC-DC converter, and the mono-layer graphene in the frequency and time domain. Through the measurement results, we observed that the mono-layer graphene can maximally reduce the vertical noise coupling by -17 dB in the frequency domain. Additionally, the vertically coupled noise is reduced by 25% in the time domain measurement
KW - 3D mixed-signal system
KW - Absorbance
KW - Mono-layer graphene
KW - Shielding Effectiveness
KW - Vertical noise coupling
UR - https://www.scopus.com/pages/publications/84874470944
U2 - 10.1109/EPEPS.2012.6457862
DO - 10.1109/EPEPS.2012.6457862
M3 - Conference contribution
AN - SCOPUS:84874470944
SN - 9781467325394
T3 - 2012 IEEE 21st Conference on Electrical Performance of Electronic Packaging and Systems, EPEPS 2012
SP - 145
EP - 148
BT - 2012 IEEE 21st Conference on Electrical Performance of Electronic Packaging and Systems, EPEPS 2012
T2 - 2012 IEEE 21st Conference on Electrical Performance of Electronic Packaging and Systems, EPEPS 2012
Y2 - 21 October 2012 through 24 October 2012
ER -