US3757344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slot antenna having capacitive coupling means
Assignee: Individual
•
Filing: 1971-09-03
•
Granted: 1973-09-04
•
Expires: 1991-09-03
Abstract
Abstract An antenna of the type having a rectangular driven slot formed in a foil radiation plane is coupled at opposed longitudinal edges of the slot to signal feed lines by capacitors formed by plate enlargements at the ends of the feed lines dielectrically spaced from the foil in which the slot is formed.
Inventors
- 👤 E Pereda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:03
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/10; H01Q13/106; H01Q1/00; H01Q1/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
116 words
In an antenna, a foil layer serving as a planar surface in which a driven element slot is formed having opposite longitudinal edges, a conductive strip serving as a signal feed line, and means for effectively coupling the signal feed line to only one of said longitudinal edges of the slot intermediate the ends thereof comprising an abrupt enlargement of the conductive strip serving as a capacitive plate and means dielectrically spacing the enlargement from the foil layer along said edge of the slot, said dielectric spacing means comprising a flexible layer of dielectric material to which the conductive strip and enlargement are bonded on a side opposite the foil layer to form a laminate assembly.
Claim 2
Dependent Claim
116 words
In an antenna, a foil layer serving as a planar surface in which a driven element slot is formed having opposite longitudinal edges, a conductive strip serving as a signal feed line, and means for effectively coupling the signal feed line to only one of said longitudinal edges of the slot intermediate the ends thereof comprising an abrupt enlargement of the conductive strip serving as a capacitive plate and means dielectrically spacing the enlargement from the foil layer along said edge of the slot, said dielectric spacing means comprising a flexible layer of dielectric material to which the conductive strip and enlargement are bonded on a side opposite the foil layer to form a laminate assembly.
Claim 3
Dependent Claim
22 words
The combination of claim 1 including a terminal connector connected to an end of the conductive strip opposite the capacitive plate enlargement.
Claim 4
Dependent Claim
35 words
The combination of claim 2 including external protective layers coating the foil layer and the conductive strip with the enlargement, one of the protective layers having an opening through which the terminal connector is exposed.
Claim 5
Dependent Claim
101 words
In an antenna, a planar conductive having a slot formed therein, said slot being defined between a pair of spaced edges, two relatively narrow signal conductors, means dielectrically spacing said planar conductor from said signal conductors, and capacitive means connected to said narrow conductors for effective coupling thereof to the planar conductor only at said edges of the slot, said capacitive means comprising abrupt enlargements of the narrow conductors, said dielectric spacing means being formed by a single flexible layer of dielectriC material to which the signal conductors and enlargements are bonded to form a laminate assembly with the planar conductor.
Claim 6
Dependent Claim
101 words
In an antenna, a planar conductive having a slot formed therein, said slot being defined between a pair of spaced edges, two relatively narrow signal conductors, means dielectrically spacing said planar conductor from said signal conductors, and capacitive means connected to said narrow conductors for effective coupling thereof to the planar conductor only at said edges of the slot, said capacitive means comprising abrupt enlargements of the narrow conductors, said dielectric spacing means being formed by a single flexible layer of dielectriC material to which the signal conductors and enlargements are bonded to form a laminate assembly with the planar conductor.
Claim 7
Dependent Claim
20 words
The combination of claim 4 including a terminal connector connected to ends of the signal conductors opposite the capacitive means.
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |