Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent
1996-06-03
1998-08-25
Pascal, Robert J.
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
3332191, 333230, 333231, 333208, 333209, 333229, H01P 120, H01P 710, H01P 5107, H01P 1207
Patent
active
057986762
ABSTRACT:
An electromagnetic bandstop filter comprises a microwave circuit, at least one microwave resonator, coupling means that couples electromagnetic energy to and from the microwave resonator, and an impedance transformer coupled to, and in series with, the coupling means, wherein the transformer is coupled to the resonator only through the coupling means, and wherein the impedance transformer is shunt coupled to the microwave circuit. The impedance transformer comprises at least two series-connected transmission line sections of different impedances.
REFERENCES:
patent: 4652843 (1987-03-01), Tang et al.
patent: 4862122 (1989-08-01), Blair, Jr. et al.
patent: 5065119 (1991-11-01), Jachowski
patent: 5191304 (1993-03-01), Jachowski
patent: 5373270 (1994-12-01), Blair et al.
patent: 5484764 (1996-01-01), Fiediuszko et al.
patent: 5576674 (1996-11-01), Jachowshi
patent: 5589807 (1996-12-01), Tang
Allen Telecom Inc.
Pascal Robert J.
Summons Barbara
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