Dual mode dielectric resonator filters without iris
CA 1292785 C · Owner: University Of Maryland · Inventors: Zaki, Kawthar A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A microwave band pass filter including dual-mode dielectric resonators mounted in a tubular enclosure to achieve coupling among the resonators without an iris. The filter is implemented in a canonical symmetric form, a longitudinal dual-mode realization or a canonical asymmetric form. The microwave band pass filter has input and output coaxial probes located along the enclosure with tuning and coupling screws provided to enable adjustment control of the frequency of resonance of the dielectric resonators and to control the coupling of energy from one resonant mode to an orthogonal mode in the same resonator. Lastly the coupling of energy from one resonator to an adjacent resonator is …
Read the whole patent
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
- Granted December 3, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 3, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.