Forward Wave Analysis of PCB Power Supply Planes above 1GHz

Umberto PAOLETTI; Yasumaro KOMIYA; Takashi SUGA; Hideki OSAKA

doi:10.1587/transcom.E98.B.1196

Forward Wave Analysis of PCB Power Supply Planes above 1GHz

Umberto PAOLETTI, Yasumaro KOMIYA, Takashi SUGA, Hideki OSAKA

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Power supply noise generated by integrated circuits is one of the major sources of electromagnetic radiation from printed circuit boards (PCB). The reduction of power supply noise can be realized by means of devices that bypass the current among power supply planes, such as bypass capacitors and ground vias. In the present work, the effect of current bypass devices on the far field radiation from multilayer PCBs is represented in terms of the ratio between the far field after and before their introduction, and it is estimated by means of the power transported by the ‘radiation effective forward wave’ in infinite power supply planes. This approach is computationally very efficient and yelds improved EMC designs for power supply planes in realistic PCBs, for example by selecting the position of stitching ground vias. The results are confirmed by a comparison with commercial tools. Forward wave analysis can be used also to study the vertical distribution of the power supply noise in multilayer PCBs. This allows to understand some important noise propagation mechanisms that are related to power and signal integrity as well, and to take low-cost countermeasures at early stage of PCB design.

Publication: IEICE TRANSACTIONS on Communications Vol.E98-B No.7 pp.1196-1203

Publication Date: 2015/07/01

Publicized

Online ISSN: 1745-1345

DOI: 10.1587/transcom.E98.B.1196

Type of Manuscript: Special Section PAPER (Special Section on Electromagnetic Compatibility Technology in Conjunction with Main Topics of EMC'14/Tokyo)

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Authors

Umberto PAOLETTI
  Hitachi, Ltd.
Yasumaro KOMIYA
  Hitachi, Ltd.
Takashi SUGA
  Hitachi, Ltd.
Hideki OSAKA
  Hitachi, Ltd.

Keyword

EMC, PCB, power supply noise, simultaneous switching noise

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Umberto PAOLETTI, Yasumaro KOMIYA, Takashi SUGA, Hideki OSAKA, "Forward Wave Analysis of PCB Power Supply Planes above 1GHz" in IEICE TRANSACTIONS on Communications, vol. E98-B, no. 7, pp. 1196-1203, July 2015, doi: 10.1587/transcom.E98.B.1196.
Abstract: Power supply noise generated by integrated circuits is one of the major sources of electromagnetic radiation from printed circuit boards (PCB). The reduction of power supply noise can be realized by means of devices that bypass the current among power supply planes, such as bypass capacitors and ground vias. In the present work, the effect of current bypass devices on the far field radiation from multilayer PCBs is represented in terms of the ratio between the far field after and before their introduction, and it is estimated by means of the power transported by the ‘radiation effective forward wave’ in infinite power supply planes. This approach is computationally very efficient and yelds improved EMC designs for power supply planes in realistic PCBs, for example by selecting the position of stitching ground vias. The results are confirmed by a comparison with commercial tools. Forward wave analysis can be used also to study the vertical distribution of the power supply noise in multilayer PCBs. This allows to understand some important noise propagation mechanisms that are related to power and signal integrity as well, and to take low-cost countermeasures at early stage of PCB design.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.E98.B.1196/_p

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@ARTICLE{e98-b_7_1196,
author={Umberto PAOLETTI, Yasumaro KOMIYA, Takashi SUGA, Hideki OSAKA, },
journal={IEICE TRANSACTIONS on Communications},
title={Forward Wave Analysis of PCB Power Supply Planes above 1GHz},
year={2015},
volume={E98-B},
number={7},
pages={1196-1203},
abstract={Power supply noise generated by integrated circuits is one of the major sources of electromagnetic radiation from printed circuit boards (PCB). The reduction of power supply noise can be realized by means of devices that bypass the current among power supply planes, such as bypass capacitors and ground vias. In the present work, the effect of current bypass devices on the far field radiation from multilayer PCBs is represented in terms of the ratio between the far field after and before their introduction, and it is estimated by means of the power transported by the ‘radiation effective forward wave’ in infinite power supply planes. This approach is computationally very efficient and yelds improved EMC designs for power supply planes in realistic PCBs, for example by selecting the position of stitching ground vias. The results are confirmed by a comparison with commercial tools. Forward wave analysis can be used also to study the vertical distribution of the power supply noise in multilayer PCBs. This allows to understand some important noise propagation mechanisms that are related to power and signal integrity as well, and to take low-cost countermeasures at early stage of PCB design.},
keywords={},
doi={10.1587/transcom.E98.B.1196},
ISSN={1745-1345},
month={July},}

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TY - JOUR
TI - Forward Wave Analysis of PCB Power Supply Planes above 1GHz
T2 - IEICE TRANSACTIONS on Communications
SP - 1196
EP - 1203
AU - Umberto PAOLETTI
AU - Yasumaro KOMIYA
AU - Takashi SUGA
AU - Hideki OSAKA
PY - 2015
DO - 10.1587/transcom.E98.B.1196
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E98-B
IS - 7
JA - IEICE TRANSACTIONS on Communications
Y1 - July 2015
AB - Power supply noise generated by integrated circuits is one of the major sources of electromagnetic radiation from printed circuit boards (PCB). The reduction of power supply noise can be realized by means of devices that bypass the current among power supply planes, such as bypass capacitors and ground vias. In the present work, the effect of current bypass devices on the far field radiation from multilayer PCBs is represented in terms of the ratio between the far field after and before their introduction, and it is estimated by means of the power transported by the ‘radiation effective forward wave’ in infinite power supply planes. This approach is computationally very efficient and yelds improved EMC designs for power supply planes in realistic PCBs, for example by selecting the position of stitching ground vias. The results are confirmed by a comparison with commercial tools. Forward wave analysis can be used also to study the vertical distribution of the power supply noise in multilayer PCBs. This allows to understand some important noise propagation mechanisms that are related to power and signal integrity as well, and to take low-cost countermeasures at early stage of PCB design.
ER -