Crosstalk in coupled microstrip lines due to substrate permittivity and S/h ratios

Ungvichian, V.; Kopp, Markus

doi:10.1109/southc.1994.498120

Cited by 4 publications

(1 citation statement)

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“…The more traditional methods include increased line spacing [19] and using materials that have dielectric constants that approach ε 0 [20]. These methods are intuitive because if we consider the electric fields as the transport mechanism of energy between lines then if line spacing is increased by a factor of two then the electric field strength falls off by a factor of 4 and the power induced by a factor of 16.…”

Section: Alternative Methods Of Crosstalk Suppressionmentioning

confidence: 99%

Modeling of Crosstalk in High Speed Planar Structure Parallel Data Buses and Suppression by Uniformly Spaced Short Circuits

Solana¹

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DEDICATIONTo those who helped make this happen.iv ACKNOWLEDGMENTS I wish to express my gratitude toward my major professor, Dr. Grover Larkins, for his multifaceted support in helping me assemble this master's thesis. His encouragement played a key role in my ability to grow from the many challenges encountered in this experience.Many thanks to my wife, Marilen, for always believing in me and supporting me throughout this challenging stage of my life. Your patience toward the amount of time demanded of me to complete this work has been a silent sacrifice on your part that spoke volumes to me, I cannot appreciate that enough. The aim of this thesis is to identify coupling mechanisms for three line microstrip, stripline and microstrip with dielectric overlay structures as either inductive or capacitive, quantify through simulation and measurement the amount of crosstalk to be expected in terms of scattering parameters. A new method of crosstalk suppression is implemented into each three line structure by placing uniformly spaced short circuits down the length of the center transmission line.All structures were simulated over various physical and electrical parameters. Select microstrip structures, shielded and unshielded, were fabricated and measured to validate the effectiveness of the shielding technique. Shielding effectiveness was calculated from the measurements, and their results showed that the isolation between lines was increased by up to 20dB.

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Section: Alternative Methods Of Crosstalk Suppressionmentioning

confidence: 99%