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Samples in periodicals archive:
Characteristic impedance of conductors of meander microstrip delay line, based on multiconductor microstrip line, when [[epsilon].
A 1-mil conductor width difference for the thicker circuit makes a difference in characteristic impedance of about 2.
Their topics include the analysis of nonhomogeneous helical systems using electrodynamical methods, calculating characteristic impedance of multiconductor lines, investigating slow-wave systems with versatile electromagnetic simulation and design tools, applying slow-wave structures to deflect electron beams, and the computer-aided design of electrodynamical delay lines.
There were 3 limitations in applying this analytical solution: (i) the length of the pin was finite so that the end effect could not be ignored; (ii) they used an inequality to estimate the characteristic impedance of the multi-pin probe, and thus the analytical solution was still a rough approximation; (iii) the analytical solution based on transmission line was not able to take the soil heterogeneity within the volume of interest into account.
Each line should then be terminated with its characteristic impedance at the destination end, which may require the addition of parts on the DUT or in the fixture as close to the DUT as possible.
Terminating the Single-Ended SCSI bus has historically been done with passive terminators at both ends of the bus, equal to the nominal cable characteristic impedance.
From a purely theoretical point of view, transmission line theory teaches that the characteristic impedance of a cable should be approximately equal to the average (or geometric mean) impedance of the load.
iFilter software also provides feedback on higher-order modes and line widths for common characteristic impedances, and warns the user if the desired characteristics of the filter are beyond the capabilities of a specific topology.