Wave transmission lines and networks – Plural channel systems
Patent
1990-03-07
1991-06-25
Gensler, Paul
Wave transmission lines and networks
Plural channel systems
333238, H01P 308
Patent
active
050270885
ABSTRACT:
A signal wiring board of the present invention includes a dielectric layer and a signal transmission path formed on a surface opposite to a surface of a ground layer formation surface on the board. The signal transmission path is composed of a pair of differential transmission lines which in turn is formed of a microstrip. Differential signals of opposite polarities are transmitted through the paired transmission lines on the signal transmission path such that electric currents of opposite senses flow through the paired differential transmission lines, respectively. With the electric currents there being a positive and a negative polarity, electric lines of force are also created between the transmission lines. The electric lines of force are strengthened as a gap G becomes narrower. The transmission lines are such that a relation G<H<S is satisfied where G represents the gap G between the differential transmission lines, S a distance between the adjacent signal transmission on the signal transmission path lines and H a thickness of the dielectric layer.
REFERENCES:
patent: 4045750 (1977-08-01), Marshall
patent: 4441088 (1984-04-01), Anderson
John D. Crow et al., "A GaAs MESFET IC for Optical Multiprocessor Networks", IEEE Transactions on Electron Devices, vol. 36, No. 2, pp. 263-268 (1989).
Shibagaki Taro
Shimizu Fumihiko
Gensler Paul
Kabushiki Kaisha Toshiba
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