Patent US3137856A successfully refreshed from Google Patents.
US3137856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Side-by-side slotted waveguides coupled to an angularly disposed feed guide
Assignee: Maxson Electronics Corp
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Filing: 1961-11-30
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Granted: 1964-06-16
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Expires: 1981-11-30
Abstract
No abstract record available.
Inventors
- 👤 Albert L Tashjian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:19
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/0006; H01Q21/0037; H01Q21/0043; H01Q21/005; H01Q21/06; H01Q21/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A MICROWAVE ENERGY RADIATING DIRECTIONAL ANTENNA COMPRISING A PLURALITY OF JUXTAPOSED WAVEGUIDES HAVING RADIATING ENDS ARRANGED IN A COMMON DIRECTION, MEANS AT SAID ENDS TO CAUSE SAID GUIDES TO BE ALTERNATELY ANTIPHASED, FEED LINE MEANS CROSSING EACH SAID GUIDE AT AN ANGLE CAUSING A CONSTANT PHASE DELAY BETWEEN EACH SUCCESSIVE GUIDE, DIRECTIONAL COUPLER MEANS PROVIDING PREDETERMINED ENERGY COUPLING FROM SAID FEED LINE MEANS INTO EACH GUIDE AND PROVIDING COUPLING TO ONE GROUP OF GUIDES TO PRODUCE A UNIFORM FLAT RADIATION DISTRIBUTION PATTERN AND TO A SECOND GROUP OF GUIDES WHERE SOME OF THE SECOND ARE PART OF THE FIRST TO PRODUCE A CURVED DISTRIBUTION PATTERN VARYING FROM A MINIMUM AT THE ENDS OF SAID SECOND GROUP TO A MAXIMUM AT THE CENTER, SAID PATTERNS
Claim 2
Dependent Claim
124 words
A MICROWAVE ENERGY RADIATING DIRECTIONAL ANTENNA COMPRISING A PLURALITY OF JUXTAPOSED WAVEGUIDES HAVING RADIATING ENDS ARRANGED IN A COMMON DIRECTION, MEANS AT SAID ENDS TO CAUSE SAID GUIDES TO BE ALTERNATELY ANTIPHASED, FEED LINE MEANS CROSSING EACH SAID GUIDE AT AN ANGLE CAUSING A CONSTANT PHASE DELAY BETWEEN EACH SUCCESSIVE GUIDE, DIRECTIONAL COUPLER MEANS PROVIDING PREDETERMINED ENERGY COUPLING FROM SAID FEED LINE MEANS INTO EACH GUIDE AND PROVIDING COUPLING TO ONE GROUP OF GUIDES TO PRODUCE A UNIFORM FLAT RADIATION DISTRIBUTION PATTERN AND TO A SECOND GROUP OF GUIDES WHERE SOME OF THE SECOND ARE PART OF THE FIRST TO PRODUCE A CURVED DISTRIBUTION PATTERN VARYING FROM A MINIMUM AT THE ENDS OF SAID SECOND GROUP TO A MAXIMUM AT THE CENTER, SAID PATTERNS
References Cited (Backward Citations)
GB855262A
Cited
US2967301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |