Superconductor technology: apparatus – material – process – High temperature devices – systems – apparatus – com- ponents,... – High frequency waveguides – resonators – electrical networks,...
Reexamination Certificate
2003-03-10
2010-06-22
Lee, Benny T. (Department: 2817)
Superconductor technology: apparatus, material, process
High temperature devices, systems, apparatus, com- ponents,...
High frequency waveguides, resonators, electrical networks,...
C333S0990MP, C333S204000, C333S219000
Reexamination Certificate
active
07742793
ABSTRACT:
A method and apparatus to provide appropriate coupling between resonators in an HTS microstrip filter are disclosed. Primary and secondary couplings between a pair of resonators are utilized. With a given spacing, the primary coupling is fixed, while the secondary coupling can have different magnitude. In addition, the secondary coupling can have the same phase or opposite phase as the primary coupling. With different combinations, large or small bandwidth filters can be made without very small or very large spacing between resonators. The same cross coupling layout configuration may be designed to achieve either positive or negative results.
REFERENCES:
patent: 4488130 (1984-12-01), Young et al.
patent: 4992759 (1991-02-01), Giraudeau et al.
patent: 5055809 (1991-10-01), Sagawa et al.
patent: 5105173 (1992-04-01), Itou
patent: 5351020 (1994-09-01), Okamura et al.
patent: 6833773 (2004-12-01), Tsukamoto et al.
patent: 6897745 (2005-05-01), Aiga et al.
patent: 05299914 (1993-11-01), None
patent: WO 98/00880 (1998-01-01), None
XP-000732019 “Theory and Experiment ofNovel Microstrip Slow-Wave Open-Loop Resonator Filters”, Hong et al.; IEEE Transations of Microwave Theory and Techniques, vol. 45, No. 12, Dec. 1997, pp. 2358-2365.
TH2D-6 “Novel Approach for Narrowband Superconducting Filters”, M. Reppel et al., 1999 IEEE MTT-S Digest, pp. 1563-1566.
Conductus, Inc.
Lee Benny T.
Merchant & Gould P.C.
LandOfFree
Microstrip filter including resonators having ends at... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Microstrip filter including resonators having ends at..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microstrip filter including resonators having ends at... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4250079