Electricity: electrical systems and devices – Miscellaneous
Patent
1983-04-14
1989-11-28
Miska, Vit W.
Electricity: electrical systems and devices
Miscellaneous
H05K 111
Patent
active
048841706
ABSTRACT:
A multilayer printed circuit board having a plurality of printed circuit boards each having opposite surfaces respectively provided with an electric source or ground layer and a signal circuit layer. The plurality of printed circuit boards is stacked through adhesive layers such that the electric source or ground layer and the signal circuit layer are alternately disposed, the characteristic impedance of each signal circuit layer is given by a thickness and material of each of the substrate and the adhesive sheet disposed between the signal circuit layer and one of two electric source or ground layers adjacent to the signal circuit layer and between the same signal circuit layer and the other electric source or ground layer.
REFERENCES:
patent: 3102213 (1963-08-01), Bedson et al.
patent: 3760091 (1973-09-01), Cannizzaro et al.
patent: 3795047 (1974-03-01), Abolafia et al.
patent: 3867759 (1975-02-01), Siefker
"Reinforcement of Printed Circuits", Archer et al., IBM Tech. Discl. Bull., vol. 13, No. 8, Jan. 71, (2296).
"Multilayer Circuit Board", Cannizzaro et al., IBM Tech. Discl. Bull., vol. 13, No. 7, Dec. 70, (2075).
"Plating Thru-Holes in Circ. Boards", . . . Schuessler et al., IBM Tech. Discl. Bull., vol. 13, No. 7, Dec. 70, (1831).
"Multilayer Printed Circ. Panel", Haddad, IBM Tech. Discl. Bull., vol. 12, No. 8, Jan. 70, (1191).
Kobayashi Fumiyuki
Ohki Nobuaki
Sengoku Norio
Hitachi , Ltd.
Miska Vit W.
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