Power-Sum Estimation of Electromagnetic Noise Radiated from High-Speed CMOS Printed Circuit Boards

Osami WADA; Megumi KOSAKA; Hidemi OKA; Ryuji KOGA; Hiroya SANO

Power-Sum Estimation of Electromagnetic Noise Radiated from High-Speed CMOS Printed Circuit Boards

Osami WADA, Megumi KOSAKA, Hidemi OKA, Ryuji KOGA, Hiroya SANO

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A new approach is proposed to evaluate total electromagnetic noise radiated from a printed circuit board (PCB), and a result of experimental verification is given. The purpose is to represent the total radiation noise by summing up noises from elemental sources on a PCB, such as signal traces or ICs. Each of the elemental noise is calculated by an a priori noise model for each component of a PCB. Parameters of each noise model should be determined experimentally. Radiation sources on a digital PCB were found to be not only signal traces between ICs, but also package-side loops each of which is composed of an IC and a decoupling capacitor. Radiation noises from these two kinds of sources were evaluated separately. Experimental PCBs, which are two-layer PCBs mounting a few high-speed CMOS (HC) ICs, were prepared and radiation power from them was measured. Each PCB has a ground plane on one side, which simulates an internal ground plane in a multilayer PCB, and signal traces on it have a configuration of a microstrip transmission line. Electromagnetic noise caused by a high-speed CMOS gate is radiated impulsively during transition time as short as about 10ns. No significant interference was found between the noises from separate traces because each of the noise is impulsive and rarely overlaps each other. It is concluded that the total radiated power is represented by a simple sum of radiations from each traces without any interference to be taken into account.

Publication: IEICE TRANSACTIONS on Communications Vol.E75-B No.3 pp.165-173

Publication Date: 1992/03/25

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Type of Manuscript: Special Section PAPER (Special Issue on Measurements and Control of Electromagnetic Interference)

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Osami WADA, Megumi KOSAKA, Hidemi OKA, Ryuji KOGA, Hiroya SANO, "Power-Sum Estimation of Electromagnetic Noise Radiated from High-Speed CMOS Printed Circuit Boards" in IEICE TRANSACTIONS on Communications, vol. E75-B, no. 3, pp. 165-173, March 1992, doi: .
Abstract: A new approach is proposed to evaluate total electromagnetic noise radiated from a printed circuit board (PCB), and a result of experimental verification is given. The purpose is to represent the total radiation noise by summing up noises from elemental sources on a PCB, such as signal traces or ICs. Each of the elemental noise is calculated by an a priori noise model for each component of a PCB. Parameters of each noise model should be determined experimentally. Radiation sources on a digital PCB were found to be not only signal traces between ICs, but also package-side loops each of which is composed of an IC and a decoupling capacitor. Radiation noises from these two kinds of sources were evaluated separately. Experimental PCBs, which are two-layer PCBs mounting a few high-speed CMOS (HC) ICs, were prepared and radiation power from them was measured. Each PCB has a ground plane on one side, which simulates an internal ground plane in a multilayer PCB, and signal traces on it have a configuration of a microstrip transmission line. Electromagnetic noise caused by a high-speed CMOS gate is radiated impulsively during transition time as short as about 10ns. No significant interference was found between the noises from separate traces because each of the noise is impulsive and rarely overlaps each other. It is concluded that the total radiated power is represented by a simple sum of radiations from each traces without any interference to be taken into account.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e75-b_3_165/_p

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@ARTICLE{e75-b_3_165,
author={Osami WADA, Megumi KOSAKA, Hidemi OKA, Ryuji KOGA, Hiroya SANO, },
journal={IEICE TRANSACTIONS on Communications},
title={Power-Sum Estimation of Electromagnetic Noise Radiated from High-Speed CMOS Printed Circuit Boards},
year={1992},
volume={E75-B},
number={3},
pages={165-173},
abstract={A new approach is proposed to evaluate total electromagnetic noise radiated from a printed circuit board (PCB), and a result of experimental verification is given. The purpose is to represent the total radiation noise by summing up noises from elemental sources on a PCB, such as signal traces or ICs. Each of the elemental noise is calculated by an a priori noise model for each component of a PCB. Parameters of each noise model should be determined experimentally. Radiation sources on a digital PCB were found to be not only signal traces between ICs, but also package-side loops each of which is composed of an IC and a decoupling capacitor. Radiation noises from these two kinds of sources were evaluated separately. Experimental PCBs, which are two-layer PCBs mounting a few high-speed CMOS (HC) ICs, were prepared and radiation power from them was measured. Each PCB has a ground plane on one side, which simulates an internal ground plane in a multilayer PCB, and signal traces on it have a configuration of a microstrip transmission line. Electromagnetic noise caused by a high-speed CMOS gate is radiated impulsively during transition time as short as about 10ns. No significant interference was found between the noises from separate traces because each of the noise is impulsive and rarely overlaps each other. It is concluded that the total radiated power is represented by a simple sum of radiations from each traces without any interference to be taken into account.},
keywords={},
doi={},
ISSN={},
month={March},}

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TY - JOUR
TI - Power-Sum Estimation of Electromagnetic Noise Radiated from High-Speed CMOS Printed Circuit Boards
T2 - IEICE TRANSACTIONS on Communications
SP - 165
EP - 173
AU - Osami WADA
AU - Megumi KOSAKA
AU - Hidemi OKA
AU - Ryuji KOGA
AU - Hiroya SANO
PY - 1992
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E75-B
IS - 3
JA - IEICE TRANSACTIONS on Communications
Y1 - March 1992
AB - A new approach is proposed to evaluate total electromagnetic noise radiated from a printed circuit board (PCB), and a result of experimental verification is given. The purpose is to represent the total radiation noise by summing up noises from elemental sources on a PCB, such as signal traces or ICs. Each of the elemental noise is calculated by an a priori noise model for each component of a PCB. Parameters of each noise model should be determined experimentally. Radiation sources on a digital PCB were found to be not only signal traces between ICs, but also package-side loops each of which is composed of an IC and a decoupling capacitor. Radiation noises from these two kinds of sources were evaluated separately. Experimental PCBs, which are two-layer PCBs mounting a few high-speed CMOS (HC) ICs, were prepared and radiation power from them was measured. Each PCB has a ground plane on one side, which simulates an internal ground plane in a multilayer PCB, and signal traces on it have a configuration of a microstrip transmission line. Electromagnetic noise caused by a high-speed CMOS gate is radiated impulsively during transition time as short as about 10ns. No significant interference was found between the noises from separate traces because each of the noise is impulsive and rarely overlaps each other. It is concluded that the total radiated power is represented by a simple sum of radiations from each traces without any interference to be taken into account.
ER -