US4488130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave integrated circuit, bandpass filter
Assignee: Raytheon Co
•
Filing: 1983-02-24
•
Granted: 1984-12-11
•
Expires: 2003-02-24
Abstract
Abstract The present invention provides an improved microwave integrated circuit filter for electromagnetic waves. The filter includes a waveguide and three, four or more resonators spaced from one another and extending from the waveguide. Means, which may include a conductive ribbon, are provided electromagnetically coupling nonadjacent resonators.
Inventors
- 👤 Frederick A. Young
- 👤 Robert J. Ahulii
- 👤 Roy K. Rikimaru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:31
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/201; H01P1/203; H01P1/20327; H01P1/20354; H01P1/20381; H01P1/205
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
60 words
A microwave integrated circuit filter for electromagnetic signals comprising: a transmission line extending longitudinally; at least three resonators arranged serially along said transmission line; and coupling means for electromagnetically coupling two nonadjacent of said resonators, said coupling means comprising a conductive ribbon which is inductively coupled to one of said resonators and is capacitively coupled to another of said resonators.
Claim 2
Dependent Claim
60 words
A microwave integrated circuit filter for electromagnetic signals comprising: a transmission line extending longitudinally; at least three resonators arranged serially along said transmission line; and coupling means for electromagnetically coupling two nonadjacent of said resonators, said coupling means comprising a conductive ribbon which is inductively coupled to one of said resonators and is capacitively coupled to another of said resonators.
Claim 3
Dependent Claim
60 words
A microwave integrated circuit filter for electromagnetic signals comprising: a transmission line extending longitudinally; at least three resonators arranged serially along said transmission line; and coupling means for electromagnetically coupling two nonadjacent of said resonators, said coupling means comprising a conductive ribbon which is inductively coupled to one of said resonators and is inductively coupled to another of said resonators.
Claim 4
Dependent Claim
60 words
A microwave integrated circuit filter for electromagnetic signals comprising: a transmission line extending longitudinally; at least three resonators arranged serially along said transmission line; and coupling means for electromagnetically coupling two nonadjacent of said resonators, said coupling means comprising a conductive ribbon which is inductively coupled to one of said resonators and is inductively coupled to another of said resonators.
Claim 5
Dependent Claim
73 words
A microwave integrated circuit filter for electromagnetic signals comprising: a transmission line extending longitudinally; p1 first, second, third and fourth resonators arranged serially along said transmission line and extending therefrom, said resonators being spaced from one another; and coupling means for electromagnetically coupling said first and fourth resonators, said coupling means comprising a conductive ribbon which is inductively coupled to one of said resonators and is capacitively coupled to another of said resonators.
Claim 6
Dependent Claim
73 words
A microwave integrated circuit filter for electromagnetic signals comprising: a transmission line extending longitudinally; p1 first, second, third and fourth resonators arranged serially along said transmission line and extending therefrom, said resonators being spaced from one another; and coupling means for electromagnetically coupling said first and fourth resonators, said coupling means comprising a conductive ribbon which is inductively coupled to one of said resonators and is capacitively coupled to another of said resonators.
Claim 7
Dependent Claim
72 words
A microwave integrated circuit filter for electromagnetic signals comprising: a transmission line extending longitudinally; first, second, third and fourth resonators arranged serially along said transmission line and extending therefrom, said resonators being spaced from one another; and coupling means for electromagnetically coupling said first and fourth resonators, said coupling means comprising a conductive ribbon which is inductively coupled to one of said resonators and is inductively coupled to another of said resonators.
Claim 8
Dependent Claim
72 words
A microwave integrated circuit filter for electromagnetic signals comprising: a transmission line extending longitudinally; first, second, third and fourth resonators arranged serially along said transmission line and extending therefrom, said resonators being spaced from one another; and coupling means for electromagnetically coupling said first and fourth resonators, said coupling means comprising a conductive ribbon which is inductively coupled to one of said resonators and is inductively coupled to another of said resonators.
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) | 1987-12-11 | 1988-06-11 | 1988-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-11 | 1992-06-11 | 1992-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-11 | 1996-06-11 | 1996-12-11 | $7700.00 | Window Closed / Lapsed |