Dual mode filter

Details Dual mode filter Dual mode filter

1977-05-16

1979-01-16

Smith, Alfred E.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

333 83A, 333 98R, H03H 900, H01P 706, H01P 100

Patent

active

041351339

ABSTRACT:
A dual mode filter, known in the art as a fourth order filter, has cylindrical coaxial input and output cavities that are connected through a coupling obstacle. The output of the dual mode filter is provided via a connector that carries a probe which extends within the end cavity. The input cavity supports a propagation therethrough of signals within a pass band of frequencies and within a parasitic band of frequencies. The diameter of the end cavity is smaller than the diameter of the input cavity, thereby causing the end cavity to suppress signals within the parasitic band.

REFERENCES:
patent: 2633492 (1953-03-01), Ring
patent: 2694168 (1954-11-01), Kinzer et al.
patent: 2950452 (1960-08-01), Marcatili
patent: 3153208 (1964-10-01), Riblet
patent: 3516030 (1970-06-01), Brumbelow
patent: 3697898 (1972-10-01), Blachier et al.

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