Printed circuit board unit with a wiring line providing terminat

Wave transmission lines and networks – Coupling networks – With impedance matching

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Details

333247, 326 30, 257723, H03H 738, H01P 124, H01L 2358

Patent

active

060466537

ABSTRACT:
A printed circuit board including a terminating structure wherein impedance matching can be established with certainty also for a long wiring line without using a discrete part as a terminating resistor. In the terminating structure, an internal wiring line connected to a signal output terminal of a semiconductor unit is formed with a resistance value which satisfies an impedance matching condition of a printed circuit board wiring line connected to the signal output terminal. The terminating structure is applied to any application wherein impedance matching of a wiring line is established on a printed circuit board on which a semiconductor unit having an internal wiring line having a resistance higher than that of a wiring line on the printed circuit board is mounted.

REFERENCES:
patent: 5006820 (1991-04-01), Prioste et al.
patent: 5097232 (1992-03-01), Stopper
patent: 5111080 (1992-05-01), Mizukami et al.
patent: 5422608 (1995-06-01), Levesque
patent: 5457406 (1995-10-01), Takada et al.
patent: 5635761 (1997-06-01), Cao et al.
patent: 5668834 (1997-09-01), Takekuma et al.
patent: 5864584 (1999-01-01), Cao et al.

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