Filter circuit for electric waves

Details Filter circuit for electric waves Filter circuit for electric waves

1980-05-21

1983-07-12

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Frequency or time domain filters and delay lines utilizing...

333173, H03H 1104, H03H 1700

Patent

active

043933564

ABSTRACT:
A filter circuit for electrical waves including at least one line which supplies electrical input waves and at least one line for withdrawing output electrical waves and in which the frequency dependent transmission characteristic is determined by coupled line loops each of which is in the form of a line ring and wherein coupling between the line loops is unidirectional and the individual line loops are designed so that they have unidirectional transmission characteristics.

REFERENCES:
patent: 3513401 (1970-05-01), Tokunaga
patent: 3621402 (1971-11-01), Gardner
patent: 3668662 (1972-06-01), Zimmerman et al.
patent: 3676711 (1972-07-01), Ahrons
patent: 3716729 (1973-02-01), Rollett
patent: 3815056 (1974-06-01), Meyer et al.
patent: 3831116 (1974-08-01), Davis, Jr. et al.
patent: 3879673 (1975-04-01), Shaw
patent: 3890582 (1975-06-01), Jeong
patent: 3925805 (1975-12-01), Erb
patent: 3940720 (1976-02-01), Harrington
patent: 3944850 (1976-03-01), Walden
patent: 3971998 (1976-07-01), Gopinath et al.
Dietrich--"Microwave Integrated Circuits", The Bell System Technical Journal, vol. 50, No. 7, Sep. 1971; pp. 2175-2194.
Lockhart et al.--"Binary Transversal Filters Using Recirculating Shift Registers", The Radio and Electronic Engineer, vol. 43, No. 3, Mar. 1973; pp. 224-226.

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