Tuneable ultra-high frequency filter with mode TM010 dielectric

Details Tuneable ultra-high frequency filter with mode TM010 dielectric Tuneable ultra-high frequency filter with mode TM010 dielectric

1984-01-10

1986-03-25

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333219, 333235, 333210, H01P 120

Patent

active

045786550

ABSTRACT:
A filter comprising a metal case having a metal base and a lid forming a guide of any section but under cut-off, that is to say which does not allow guided propagation. Cylindrical dielectric resonators are in contact with the metal securing base and the resonators resonate then in the TM010 mode. For frequency tuning of the filter, the distance between the bottom of the lid and the ends of the dielectric resonators supported by the base is variable. The invention applies more especially to tuneable band-pass filters.

REFERENCES:
patent: 3639862 (1972-02-01), Craven et al.
patent: 4028652 (1977-06-01), Wakino et al.
patent: 4121181 (1978-10-01), Nishikawa et al.
patent: 4459570 (1984-07-01), Delabelle et al.
Kobayashi, Yoshio et al., "Bandpass Filter Using TM010 Dielectric Rod Resonators", 1978 IEEE MTT-S, Int'l. Microwave Symposium Dig., Jun. 27-29, 1978, pp. 233-235.

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