Parasitic modes on printed circuit boards and their effects on EMC and signal integrity

In this paper, parasitic modes, such as slotline, parallel plane, and surface wave (SW) modes, commonly found on printed circuit boards (PCBs) are analyzed and their effects on electromagnetic compatibility (EMC) and signal integrity are discussed. The analysis is based on numerical simulations using the finite difference time domain (FDTD) method which is shown to be very well suited for rigorous modeling of parasitic mode effects. The EMC and signal integrity problems discussed include power loss, crosstalk, ground bounce, and free space radiation. Design guidelines for improved EMC and signal integrity are derived from the results obtained. Comprehensive simulation and characterization of SWs using FDTD is presented for the first time.

[1]  K. Yee.  Numerical solution of initial boundary value problems involving maxwell's equations in isotropic media , 1966 .

[2]  S. Ramo,et al.  Fields and Waves in Communication Electronics , 1966 .

[3]  S. B. Cohn,et al.  Slot Line on a Dielectric Substrate , 1969 .

[4]  Raj Mittra,et al.  Dispersion characteristics of slot lines , 1971 .

[5]  M. Maeda,et al.  An Analysis of Gap in Microstrip Transmission Lines , 1972 .

[6]  L. J. V. D. Pauw,et al.  The Radiation of Electromagnetic Power by Microstrip Configurations , 1977 .

[7]  K. Gupta,et al.  Microstrip Lines and Slotlines , 1979 .

[8]  A. Giarola,et al.  Microstrip disk antennas, Part II: The problem of surface wave radiation by dielectric truncation , 1984 .

[9]  B. Shuppert,et al.  Microstrip/slotline transitions: modeling and experimental investigation , 1988 .

[10]  K. Mei,et al.  Full-wave analysis of coplanar waveguide and slotline using the time-domain finite-difference method , 1989 .

[11]  Tzyy-Sheng Horng,et al.  A generalized method for distinguishing between radiation and surface-wave losses in microstrip discontinuities , 1990 .

[12]  A. Ishimaru.  Electromagnetic Wave Propagation, Radiation, and Scattering , 1990 .

[13]  Gabriel M. Rebeiz,et al.  Surface wave excitation from open microstrip discontinuities , 1991 .

[14]  J. J. Lee.  Slotline impedance , 1991 .

[15]  A. Bhattacharyya.  Reply to "Comments on "Effects of ground plane and dielectric truncations on the efficiency of a printed structure"" , 1991 .

[16]  Bernard Jecko,et al.  Harmonical characterization of a microstrip bend via the finite difference time domain method , 1992 .

[17]  R. Luebbers,et al.  The Finite Difference Time Domain Method for Electromagnetics , 1993 .

[18]  Jiayuan Fang,et al.  Model of interaction between signal vias and metal planes in electronics packaging , 1994, Proceedings of 1994 IEEE Electrical Performance of Electronic Packaging.

[19]  Raj Mittra,et al.  Efficient modeling of power planes in computer packages using the finite difference time domain method , 1994 .

[20]  Prediction of surface wave radiation coupling on microwave planar circuits , 1995 .

[21]  John B. Schneider,et al.  A selective survey of the finite-difference time-domain literature , 1995 .

[22]  Allen Taflove,et al.  Computational Electrodynamics the Finite-Difference Time-Domain Method , 1995 .

[23]  L. Hale.  On the coupling of energy in parallel plane waveguides , 1996 .

[24]  H. Merkelo,et al.  Crossing the planes at high speed. Signal integrity issues at split ground and power planes , 1997 .

[25]  J. J. Parker.  Via coupling within parallel rectangular planes , 1997 .

[26]  I. Novak,et al.  Reducing simultaneous switching noise and EMI on ground/power planes by dissipative edge termination , 1998, IEEE 7th Topical Meeting on Electrical Performance of Electronic Packaging (Cat. No.98TH8370).

[27]  R. J. Joseph,et al.  Advances in Computational Electrodynamics: The Finite - Di erence Time - Domain Method , 1998 .

[28]  F. Olyslager,et al.  Study of the ground bounce caused by power plane resonances , 1998 .

[29]  Robert Stratman Elliott,et al.  An introduction to guided waves and microwave circuits , 1998 .

[30]  W. Heinrich,et al.  Millimeter-wave characteristics of flip-chip interconnects for multichip modules , 1998, IMS 1998.

[31]  L. Katehi,et al.  Parallel-plate mode reduction in conductor-backed slots using electromagnetic bandgap substrates , 1999 .

[32]  Mario Sorolla,et al.  Enhanced patch-antenna performance by suppressing surface waves using photonic-bandgap substrates , 1999 .

[34]  Radiation patterns of sources placed near the truncation of a semi-infinite dielectric structure: the demonstration case of a magnetic line current , 2000 .

[35]  Hartmut Grabinski.  Interconnects in VLSI design , 2000 .