Comb-line bandpass filter

Details Comb-line bandpass filter Comb-line bandpass filter

1978-11-07

1980-09-23

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333209, H03H 710

Patent

active

042245877

ABSTRACT:
A comb-line bandpass filter comprising an enclosure or outer conductor and a plurality of inner conductors arranged parallel in the outer conductor. Adjacent to one end of each inner conductor a body of dielectric material is attached to provide a larger diameter, lumped capacitance section while providing a lumped inductance section in the remainder of the inner conductor. A conductive layer, conductively coupled to the outer conductor, encircles the dielectric body to act as a shield between adjacent inner conductors so that the coupling between them is concentrated in the inductive section. Overall size of the comb-line filter is reduced by reduction both in axial length of the inner conductors and the spacing between them.

REFERENCES:
patent: 3713051 (1973-01-01), Kell
patent: 4121181 (1978-10-01), Nishikawa et al.
patent: 4151494 (1979-04-01), Nishikawa et al.

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