Title :
A GHz-band ceramic multi-layer substrate and its application to a hybrid IC
Author :
Taguchi, Y. ; Miyauchi, K. ; Eda, K. ; Ishida, T.
Author_Institution :
Matsushita Electr. Ind. Co. Ltd., Japan
Abstract :
A novel ceramic multilayer substrate for mobile communication using alumina-glass composite ceramics and cofired copper conductors is presented. Electrical characteristics at gigahertz frequencies of the substrate, copper conductor, transmission line, and via hole were evaluated. Hybrid integrated circuits such as an antenna switch were demonstrated using the substrate. The results showed that the ceramic multilayer substrate has electrical characteristics sufficiently good for gigahertz-band applications. Using the substrates, one can greatly reduce the size of RF circuit boards for mobile communication equipment. An RF antenna switch circuit for mobile portable telephones operating at 1.5 GHz has been demonstrated.<>
Keywords :
ceramics; hybrid integrated circuits; integrated circuit technology; microwave integrated circuits; mobile radio systems; radio equipment; radiotelephony; substrates; 1.5 GHz; GHz-band; MIC; UHF; alumina-glass composite ceramics; antenna switch; ceramic multilayer substrate; cofired Cu conductors; electrical characteristics; gigahertz frequencies; hybrid IC; mobile communication equipment; mobile portable telephones; transmission line; via hole; Application specific integrated circuits; Ceramics; Conductors; Copper; Electric variables; Hybrid integrated circuits; Mobile communication; Nonhomogeneous media; Switches; Switching circuits;
Conference_Titel :
Microwave Symposium Digest, 1993., IEEE MTT-S International
Conference_Location :
Atlanta, GA, USA
Print_ISBN :
0-7803-1209-0
DOI :
10.1109/MWSYM.1993.277120
