US3760304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slot line
Assignee: United States Department of the Army
•
Filing: 1972-05-04
•
Granted: 1973-09-18
•
Expires: 1992-05-04
Abstract
Abstract This invention relates to a low loss transmission line having a slotted metal deposited or etched on a high permittivity substrate. With various sizes, shapes and configurations of slots, the transmission line may be used as part of components such as hybrid junctions, couplers, filters, mixers, amplifiers, ferrite devices, and resonators. Novel slot/coax and slot/stripline junctions or connections are disclosed as well as novel methods of slot excitation.
Inventors
- 👤 S Cohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:16
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/02; H01P3/08; H01P3/085; H01P1/00; H01P1/20; H01P1/201; H01P1/2016; H01P3/081; H01P5/00; H01P5/02; H01P5/08; H01P5/10; H01P5/1007
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
79 words
A filter arrangement comprising: a high permittivity substrate having a first and a second side; a metal layer in contact with and covering said first side of said substrate, said second side being exposed to air; a series of elongated slots formed in said metal, said slots being offset one from the other in a stepping-stone fashion; and, input and output means mounted on said first side of said substrate thereby couping said slots to produce a band-pass filter.
Claim 2
Dependent Claim
79 words
A filter arrangement comprising: a high permittivity substrate having a first and a second side; a metal layer in contact with and covering said first side of said substrate, said second side being exposed to air; a series of elongated slots formed in said metal, said slots being offset one from the other in a stepping-stone fashion; and, input and output means mounted on said first side of said substrate thereby couping said slots to produce a band-pass filter.
Claim 3
Dependent Claim
20 words
The filter arrangement according to claim 1 and further comprising that: said input and output means comprises a slot line.
References Cited (Backward Citations)
US2976499A
Cited
US3243742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |