Self-corrected electric filters

Details Self-corrected electric filters Self-corrected electric filters

1982-01-07

1984-03-13

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

333 32, 333138, 333168, H03H 703, H03H 7075

Patent

active

044370750

ABSTRACT:
A self-corrected electric filter with localized constant elements having two inputs, two outputs, input and output matching means, a group of an even number of filter elements in cascade for filtering the wide band signal, group delay time correction means comprising adjacent secondary couplings connected between at least two successive filter elements and secondary non-adjacent couplings connected between at least two non-adjacent filter elements.

REFERENCES:
patent: 3060389 (1962-10-01), Kahn
patent: 3132313 (1964-05-01), Alford
Saito--"Coupled Resonant Networks with Attenuation Poles", Trans Inst. Electron Commun. Eng. Japan A.B.C. vol. 53, No. 4 (Apr. 1970); pp. 1-2.
Hagele--"Mikrowellenfilter mit Umwegkopplungen zur Erzegung von Dampfungspolen", Frequenz 24 (1970) 11; pp. 340-341.
Atia et al.--"Narrow-Bandpass Waveguide Filters", IEEE Transactions on Microwave Theory and Techniques, vol. MTT-20, No. 4, Apr. 1972; pp. 258-265.

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