US3594666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyromagnetic notch filter
Assignee: RCA Corp
•
Filing: 1968-09-06
•
Granted: 1971-07-20
•
Expires: 1988-09-06
Abstract
Abstract A notch filter is disclosed which includes a pair of conductors extending transversely of each other in a crosslike configuration, the conductors being insulated from each other. A ball of ferri- or ferromagnetic material is positioned between the two conductors where they cross. A magnetic field is applied to the ball and, by variation of the field, a band of waves that is applied to one end of one of the conductors does not arrive at the other end of said conductor but is dissipated in resistors connected to the ends of the other conductor.
Inventors
- 👤 Anastas Boornard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:09
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/215; H01P1/218
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
101 words
A notch filter comprising: a base conductor, a pair of conductors spaced from and at one side of said base conductor, said pair of conductors extending transversely of each other, said pair of conductors being insulated from each other, a mass of insulating magnetic material positioned at the crossing of said pair of conductors, means to apply a wave to be filtered to one end of one of said pair of conductors, means to take a filtered wave from the other end of said one conductor, and a resistor connected between one end of said other conductor and said base conductor.
Claim 2
Dependent Claim
101 words
A notch filter comprising: a base conductor, a pair of conductors spaced from and at one side of said base conductor, said pair of conductors extending transversely of each other, said pair of conductors being insulated from each other, a mass of insulating magnetic material positioned at the crossing of said pair of conductors, means to apply a wave to be filtered to one end of one of said pair of conductors, means to take a filtered wave from the other end of said one conductor, and a resistor connected between one end of said other conductor and said base conductor.
Claim 3
Dependent Claim
22 words
The invention as expressed in claim 1 in which means are provided to produce a magnetic field which penetrates said magnetic mass.
Claim 4
Dependent Claim
19 words
The invention as expressed in claim 1 in which said mass is between said two conductors at their crossing.
Claim 5
Dependent Claim
111 words
A notch filter comprising a base conductor, a pair of conductors at one side of said base conductor, said conductors extending transversely of each other and being insulated from each other, a mass of insulating magnetic material at the crossing of said pair of conductors, means to apply a wave to be filtered to one end of one of said pair of conductors, means to take a filtered wave from the other end of said one conductor, means to connect the ends of said other of said pair of conductors through a respective resistor to said base conductor, and means to apply a magnetic field to said mass of insulating material.
Claim 6
Dependent Claim
111 words
A notch filter comprising a base conductor, a pair of conductors at one side of said base conductor, said conductors extending transversely of each other and being insulated from each other, a mass of insulating magnetic material at the crossing of said pair of conductors, means to apply a wave to be filtered to one end of one of said pair of conductors, means to take a filtered wave from the other end of said one conductor, means to connect the ends of said other of said pair of conductors through a respective resistor to said base conductor, and means to apply a magnetic field to said mass of insulating material.
Claim 7
Dependent Claim
43 words
The invention as expressed in claim 4 in which said base conductor is applied to one side of an insulator and in which at least a portion of each of said pair of conductors is applied to the other side of said insulator.
Claim 8
Dependent Claim
18 words
The invention as expressed in claim 4 in which said mass is a of yttrium iron garnet material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |