05319328 is referenced by 37 patents and cites 40 patents.

Harmonic frequencies of a ceramic filter (1) can be efficiently attenuated by placing in a hole (2; 3) of a first and/or last resonator a conductive rod (7; 7'), on which disk-like insulating plates (9, 10, 11, 12; 9', 10', 11', 12') are provided in spaced relationship along the length of the rod. The harmonic filter thus formed is a low pass filter, comprising transverse capacitances formed by the insulating plates and longitudinal inductances formed by the rod portions between the plates. Coupling between the harmonic filter and the resonators of the main filter takes place at the upper end of the rods (7, 7').

Title
Dielectric filter
Application Number
7/906204
Publication Number
5319328
Application Date
June 25, 1992
Publication Date
June 7, 1994
Inventor
Aimo Turunen
Kempele
FI
Agent
Darby and Darby
Assignee
LK Products OY
FI
IPC
H01P 1/201
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