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Microwave Characteristics of Alumina-Glass Composite Multi-Layer Substrates with Co-fired Copper Conductors
Yutaka TAGUCHI Katsuyuki MIYAUCHI Kazuo EDA Toru ISHIDA
IEICE TRANSACTIONS on Electronics
Publication Date: 1993/06/25
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter-Wave Technology for Advanced Functions and Size-Reductions)
multi-layer, microwave, alumina ceramics, copper,
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This paper presents ceramic multi-layer substrates for mobile communication using alumina-glass composite ceramics and co-fired copper conductors. Electrical characteristics in GHz frequencies of the substrate, copper conductor, transmission line, via hole and coupling between the striplines were evaluated. The results showed that the ceramic multi-layer substrate had good electrical characteristics enough for GHz-band applications. Using the ceramic multi-layer substrates, one can drastically reduce the size of RF circuit boards for mobile communication equipment.