A multimodal analysis of the effects of guard traces over near wideband signal paths

Author

Pajares, Francisco-Javier ; Ribó, Miquel ; Regué, Joan-Ramon ; Rodriguez-Cepeda, Pablo ; Pradell, Lluís

Author_Institution

Dept. of Commun. & Signal Theory, Enginyeria La Salle - Ramon Llull Universiyt, Barcelona, Spain

Volume

3

fYear

2005

fDate

8-12 Aug. 2005

Firstpage

933

Abstract

Guard traces are used in PCB implementations to avoid interferences between signal strips. These guard traces can affect the integrity of high harmonic content signals such as clock or wideband RF signals. In this paper, the effect of guard traces is analyzed from a multimodal point of view. A multimodal analysis allows a simple interpretation of the phenomena involved in the loss of integrity of signals propagating through strips close to the guard traces. Two guard trace configurations are analyzed, circuitally simulated and measured in order to test the adequacy of the multimodal approach to describe the behavior of signal strips close to guard traces, showing good agreement between theory and experiment.

Keywords

modal analysis; network analysis; printed circuits; signal processing; PCB; clock; guard traces; high harmonic content signals; interferences avoidance; multimodal analysis; signal strips; signals integrity; wideband RF signals; wideband signal paths; Analytical models; Circuit analysis; Circuit testing; Clocks; Interference; Propagation losses; RF signals; Signal analysis; Strips; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 2005. EMC 2005. 2005 International Symposium on

Print_ISBN

0-7803-9380-5

Type

conf

DOI

10.1109/ISEMC.2005.1513659

Filename

1513659