Helical resonator filter with dielectric apertures

Details Helical resonator filter with dielectric apertures Helical resonator filter with dielectric apertures

1981-03-30

1982-12-21

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333219, H01P 120, H01P 700

Patent

active

043652212

ABSTRACT:
A helical resonator filter includes several helical coils, each grounded at one end and free at the other and enclosed within a cavity. The coils are coupled to each other electromagnetically through apertures in the conductive walls separating the resonator cavities from each other. A dielectric member is inserted into the apertures to increase coupling between adjacent coils to increase the bandwidth of the filter.

REFERENCES:
patent: 2188651 (1940-06-01), Cox
patent: 2890422 (1959-06-01), Schlicke
patent: 3538463 (1970-11-01), Pakan
patent: 3691487 (1972-06-01), Yoshimoto
patent: 3713051 (1973-01-01), Kell
patent: 3939443 (1976-02-01), Biro et al.
patent: 3973226 (1976-08-01), Affolter et al.
patent: 4101854 (1978-07-01), Gikow
patent: 4179673 (1979-12-01), Nishikawa et al.
patent: 4210884 (1980-07-01), Tabuchi et al.
"The International Dictionary of Physics and Electronics," D. Van Nostrand, Princeton, N.J., 1961, Title Page and p. 175.

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