General response dual-mode, dielectric resonator loaded cavity filter
CA 2286997 A1 · Owner: Fiedziuszko, Slawomir J. · Inventors: Fiedziuszko, George A.; Fiedziuszko, Slawomir J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ceramic resonator element having high Q high dielectric constant, and a low, temperature coefficient of resonant frequent:y is enclosed within a cavity to form a, composite microwave resonator having reduced dimensions and weight as compared to, a simple cavity resonator. In an exemplary embodiment a pair of tuning screws , extend, into the cavity along orthogonal axes to tune: the structure to resonance along these axes, at frequencies near the fundamental resonance of the ceramic element. Several such, cavities can be formed in a short length of waveguide by the use of transverse partitions, at spaced intervals and coupling between cavities can be accomplished by using simple, …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 19, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 19, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 2021.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.