Dielectric filter having coupling means disposed on a laminated

Details Dielectric filter having coupling means disposed on a laminated Dielectric filter having coupling means disposed on a laminated

1992-11-30

1994-12-20

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333246, H01P 1202, H01P 1205

Patent

active

053749103

ABSTRACT:
A dielectric filter comprises a filtering member made up of resonators, intercoupled through a laminated substrate joined to the filtering member and containing interlaminal patterned conductive platings constituting capacitive and inductive elements. Electric field leakage arising among the conductive platings is reduced, improving the effective dielectric constant of the substrate. The extent of the conductive platings providing desired capacitance and selected electrical length is reducible, to decrease the size of the substrate. Furthermore, the substrate construction prevents foreign matter from becoming lodged on, or even from being brought into contact with, the conductive platings, stabilizing capacitive coupling.

REFERENCES:
patent: 4906955 (1990-03-01), Yorita et al.
patent: 5036301 (1991-07-01), Takao et al.
patent: 5157365 (1992-10-01), Hoang
patent: 5196813 (1993-03-01), Nakakubo

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