Wave transmission lines and networks – Plural channel systems
Patent
1997-04-02
1998-07-07
Gensler, Paul
Wave transmission lines and networks
Plural channel systems
333 33, 333161, 333238, H01P 308, H01P 500
Patent
active
057775265
ABSTRACT:
A microstrip transmission line device wherein if there is a difference between absolute transmission delay times tpd of two signals to be transmitted over two strip conductors, for example, if a clock signal for tpd=83.3 or 76.9 ps/cm and a data signal for tpd=63.3 or 56.9 ps/cm are to be transmitted, a transmission delay time tpd per unit length of one strip conductor is adjusted by disposing a dielectric just under the one strip conductor, the dielectric having a predetermined relative dielectric constant (in this case, .epsilon.r=5.0 or 4.0) different from a relative dielectric constant (in this case, .epsilon.r=9.0 or 8.0) of a dielectric just under another strip conductor by an amount corresponding to a difference between absolute transmission delay times tpd of the one strip conductor and the other strip conductor. In this manner, the lengths of the two strip lines are made equal.
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Gensler Paul
Hitachi , Ltd.
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