Patent US3755759A successfully refreshed from Google Patents.
US3755759A
Expired / Lapsed
US
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Slot line
Assignee: SRI International Inc
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Filing: 1972-05-04
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Granted: 1973-08-28
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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
2026-11-07 19:19
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: 4
Claim 1
Independent Claim
69 words
A low loss transmission line 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 slot formed in said metal and oriented on said substrate so as to be essentially perpendicular with one edge of said substrate, and; coaxial line means for exciting said slot
Claim 2
Dependent Claim
69 words
A low loss transmission line 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 slot formed in said metal and oriented on said substrate so as to be essentially perpendicular with one edge of said substrate, and; coaxial line means for exciting said slot
Claim 3
Dependent Claim
58 words
The transmission line according to claim 1 and further comprising that: said coaxial line is essentially parallel to said one edge and the outer conductor of said coaxial line is in electrical contact with one side of said slot and the center conductor of said coaxial line is in electrical contact with the other side of said slot.
Claim 4
Dependent Claim
65 words
The transmission line according to claim 1 and further comprising that: said coaxial line is essentially parallel to said slot and spaced apart therefrom; said coaxial line having its center conductor electrically connected to one side of said slot and its outer conductor connected to the other side of said slot, and: a choke mounted on and concentric with said coaxial line to prevent leakage.
References Cited (Backward Citations)
US3201722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |