Number | Date | Country | Kind |
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4-153243 | Jun 1992 | JPX | |
4-244373 | Sep 1992 | JPX | |
4-244398 | Sep 1992 | JPX | |
4-257799 | Sep 1992 | JPX | |
4-326588 | Dec 1992 | JPX |
Number | Name | Date | Kind |
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3796970 | Snell, Jr. | Mar 1974 | |
4327342 | De Ronde | Apr 1982 | |
4488131 | Griffin et al. | Dec 1984 | |
5136268 | Fiedziuszko et al. | Aug 1992 | |
5172084 | Fiedziuszko et al. | Dec 1992 |
Number | Date | Country |
---|---|---|
0532330 | Mar 1993 | EPX |
2248621 | May 1975 | FRX |
61-251203 | Nov 1986 | JPX |
62-298202 | Dec 1987 | JPX |
Entry |
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1990 IEEE MTT-S International Microwave Symposium-Digest, vol. 1; May 8-10, 1990, Dallas, US; IEEE, New York, US, 1990; X. H. Jiao et al.: "Microwave frequency agile active filters for MIC and MMIC applications", pp. 503-506. |
IRE Transactions on Microwave Theory and Techniques, vol. 9, No. 7, Jul. 1961, New York, US; pp. 359-360; J. A. Kaiser "Ring network filter". |
"Miniature Dual Mode Microstrip Filters" by J. A. Curtis et al; 1991 IEEE MTT-S Digest pp. 443-446, 1991. |