Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1996-10-01
1999-05-04
Krynski, William
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428615, 428672, 428675, B32B 300
Patent
active
059003081
ABSTRACT:
In a microstrip line dielectric filter, a principal layer of a conductor constituting a microstrip line circuit consists of a Cu plating layer and the thickness of the conductor is 10 .mu.m or less. In another embodiment, the thickness of the conductor is determined in relation to a center frequency of a wave transmitted through the filter so as to be within the range defined by a hatched area in the graph of FIG. 6.
REFERENCES:
V. S. Aramati et al., "Thin-Film Microwave Integrated Circuits", IEEE Transactions on Parts, Hybrids and Packaging, vol. 12, No. 4, Dec. (1976), pp. 309-316.
M. W. Hosking, "The Realm of Microwaves", Wireless World, vol. 79, No. 14, Jul. (1973), pp. 31-35.
T. H. Oxley et al., "Microwave Integrated Circuit Techniques", G.E.C. Journal of Science and Technology, vol. 43, No. 1, Jan. (1976), pp. 21-331.
H. Sobol., "Applications of Integrated Circuit Technology to Microwave Frequencies", Proc. of the IEEE, vol. 59, No. 8, Aug. (1971), pp. 1200-1211.
T. C. Edwards., "Foundations for Microstrip Circuit Design", John Wiley and Sons, (1981), pp. 28-29.
Koike Kazumasa
Takemura Tatsuya
Krynski William
Lam Cathy F.
NGK Spark Plug Co. Ltd.
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