H - Electricity – 03 – H
Patent
H - Electricity
03
H
H03H 9/46 (2006.01) H01P 1/205 (2006.01) H03H 9/24 (2006.01) H03H 9/56 (2006.01)
Patent
CA 2065207
1182-3 Abstract In order to provide a sufficient isolation between the reso- nators of a band-stop filter, prior art band-stop filters must be manufactured from separate ceramic resonator blocks. According to the invention the band-stop filter can be manu- factured in a single ceramic block (1), having on one side surface strip-like areas (14; 15) of electrically conducting material extending perpendicularly from the bottom edge to the top edge and being located in the area between the reso- nators (A and B, B and C) and having dimensions selected so that they substantially cancel the electric and magnetic field between the resonators. If necessary, the coupling be- tween the resonators can be adjusted by changing the width of the strip-like areas (14; 15) or by providing them with discontinuities.
Nappa Pauli
Turunen Aimo
Lk-Products Oy
Shapiro Cohen
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