Patent US3760302A successfully refreshed from Google Patents.
US3760302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slot line
Assignee: United States Department of the Army
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Filing: 1972-05-04
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Granted: 1973-09-18
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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
2026-11-03 18:48
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
162 words
A band-stop filter arrangement comprising: a high permittivity substrate having a first and a second side; a conductive metal layer in contact with and covering said first side of said substrate, said second side being exposed to air; a series of elongated resonant slots located in said conductive metal layer and spaced along a preselected line, the first and the last of said series of elongated slots being positioned symmetrically with respect to said preselected line, with the intermediate slots offset from said preselected line; and input-output coupling means positioned on said second side of said substrate in parallel with said pre-selected line such that the first and last slots of said series of elongated resonant slots are perpendicular to said coupling means for effecting a tight coupling, with said offset slots providing slightly less coupling, such that the combined total coupling effective provides the desired band-stop filtering of a signal introduced into the input-coupling means and extracted from the output thereof.
Claim 2
Dependent Claim
162 words
A band-stop filter arrangement comprising: a high permittivity substrate having a first and a second side; a conductive metal layer in contact with and covering said first side of said substrate, said second side being exposed to air; a series of elongated resonant slots located in said conductive metal layer and spaced along a preselected line, the first and the last of said series of elongated slots being positioned symmetrically with respect to said preselected line, with the intermediate slots offset from said preselected line; and input-output coupling means positioned on said second side of said substrate in parallel with said pre-selected line such that the first and last slots of said series of elongated resonant slots are perpendicular to said coupling means for effecting a tight coupling, with said offset slots providing slightly less coupling, such that the combined total coupling effective provides the desired band-stop filtering of a signal introduced into the input-coupling means and extracted from the output thereof.
Claim 3
Dependent Claim
18 words
The filter arrangement according to claim 1 and further comprising that: said coupling means includes a microstrip line.
References Cited (Backward Citations)
US2922123A
Cited
US2976499A
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 |