| Summary: | 碩士 === 國立海洋大學 === 電機工程學系 === 85 === The purpose of the thesis is to study the dispersion
characteristics of shield ed coupled microstrip lines. Firstly,
The shielded coupled microstrip line structures and the exicted
dispersion models are introduced in detail. Secondly, The
quasis-static characteristics of shielded coupled microstrip
lines are analyzed. Moreover, the frequency-
dependentcharacteristics of the shielded coupled microstrip
lines are studied, including the even- and odd-mode effective
dielectric constantsand characteristic impedences. From the
results of analysis, it is noted that the even- and odd-mode
effective dielectric constantsand characteristics impedences are
increased with the frequency. Finally, the signal dispersion on
shielded on shielded coupled microstrip linesis executed. From
the results of analysis, it is noted that the dispersion effect
will be more pronounced when the shielded coupled microstrip
lines are designed with largersubstrate dielectric constant or
strip conductor width, thicker strip conductor or substrate and
higher shielding height or strip conductors.
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