Comb-line band-pass filters in the microwave field

Details Comb-line band-pass filters in the microwave field Comb-line band-pass filters in the microwave field

1989-12-05

1991-04-30

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333203, 333207, 333235, H01P 1205, H01P 1207

Patent

active

050122100

ABSTRACT:
A comb-line band-pass filter with circular cross section is made up of internal rods constituting the resonators of the filter and brought to resonance by the use of tuning screws and alternating with coupling screws. In the filter the rods are inserted in such a manner that each one is rotated in relation to the preceding one by an angle of 0.degree.<.alpha.<90.degree. while the coupling screws are placed at an intermediate angle. For equal electrical characteristics the length of the filter is also a function of the rotation angle of the rods.

REFERENCES:
patent: 3093803 (1963-06-01), Schlicke et al.
patent: 4489293 (1984-12-01), Fiedziuszko
patent: 4513264 (1985-04-01), Dorey et al.
patent: 4630009 (1986-12-01), Tang
patent: 4760361 (1988-07-01), Kobayashi
"Data for Partially Decoupled Round Rods Between Parallel Ground Planes", E. G. Crystal, IEEE Transactions on Microwave Theory and Techniques, May 1968; p. 311 ff.

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