Distributed constant circuit board using ceramic substrate mater

Details Distributed constant circuit board using ceramic substrate mater Distributed constant circuit board using ceramic substrate mater

1991-07-22

1993-08-03

Ryan, Patrick J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428209, 428210, 428323, 428325, 428332, 428402, 428432, 428433, 428457, 428901, B32B 300

Patent

active

052327655

ABSTRACT:
A distributed constant circuit board including a ceramic substrate, and at least one conductor pattern which is carried by the ceramic substrate and which forms a resonance circuit, an inductor, a capacitor or strip transmission line. The conductor pattern has an electrically conductive composition whose major component is selected from the group consisting of Ag, Au and Cu, and which has a sheet resistivity not higher than 10 m.OMEGA. per square. The conductor is formed by co-firing with the ceramic substrate, so that the conductor pattern is incorporated in the substrate. The ceramic substrate is formed principally of a ceramic composition which gives the resonance circuit a resonance frequency whose temperature coefficient is held within a range between -30 ppm/.degree. C. and +100 ppm/.degree. C.

REFERENCES:
patent: 4301324 (1981-11-01), Kumar et al.
patent: 4620264 (1986-10-01), Ushifusa et al.
patent: 4794048 (1988-12-01), Oboodi et al.
patent: 4883705 (1989-11-01), Kawakami et al.
patent: 4899118 (1990-02-01), Polinski, Sr.
Patent Abstracts of Japan vol. 14, No. 242 (C-721), May 23, 1990 & JP-A-2,064,059 (Murata Mfg Co.) Mar. 5, 1990.
IEEE, Proceedings of the 36th. Electronic Components Conference 1986, New York, US pp. 37-47; A. L. Eustice et al.: "Low Temperature Co-firable Ceramics: A New Approach for Electronic Packaging." p. 38, left col., paragraph 2-p. 39, right col., paragraph 2.
World Patents Index Latest Week 8223, Derwent Publications, Ltd., London, GB; AN 82-46708E & JP-A-57,069,607 (Alps Electric Co.) Apr. 28, 1982.

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