US3248731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna modulation to modify the directional response of receiving systems
Assignee: Raytheon Co
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Filing: 1962-12-24
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Granted: 1966-04-26
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Expires: 1982-12-24
Abstract
No abstract record available.
Inventors
- 👤 Robert W Bickmore
- 👤 Howard E Shanks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:29
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
APPARATUS FOR MODIFYING THE DIRECTIONAL RESPONSE OF AN ELECTROMAGNETIC WAVE ENERGY RECEIVING SYSTEM COMPRISING: (A) AN ANTENNA FOR RECEIVING ELECTROMAGNETIC WAVE ENERGY AND HAVING A DIRECTIONAL RESPONSE CHARACTERISTIC, SAID ANTENNA HAVING A VARIABLE PARAMETER AFFECTING SAID DIRECTIONAL RESPONSE CHARACTERISTIC; (B) MODULATING MEANS COUPLED TO SAID ANTENNA FOR CYCLICALLY MODULATING SAID VARIABLE PARAMETER AT A PREDETERMINED FREQUENCY TO PRODUCE A PLURALITY OF SIGNAL COMPONENTS, ONE OF SAID SIGNAL COMPONENTS BEING AT THE FREQUENCY OF SAID ELECTROMAGNETIC WAVE ENERGY AND THE REMAINING SIGNAL COMPONENTS BEING SEPARATED IN FREQUENCY THEREFROM IN MULTIPLES OF SAID MODULATING FREQUENCY; (C) FREQUENCY SELECTIVE MEANS COUPLED TO SAID ANTENNA AND ADJUSTED TO PASS A PREDETERMINED ONE OF SAID SIGNAL COMPONENTS, THE OUTPUT OF SAID FREQUENCY SELECTIVE MEANS BEING A SIGNAL HAVING A MODIFIED DIRECTIONAL RESPONSE CHARACTERISTIC COMPARED TO THAT OF SAID ANTENNA; (D) AND UTILIZATION MEANS COUPLED TO SAID FREQUENCY SELECTIVE MEANS.
Claim 2
Dependent Claim
144 words
APPARATUS FOR MODIFYING THE DIRECTIONAL RESPONSE OF AN ELECTROMAGNETIC WAVE ENERGY RECEIVING SYSTEM COMPRISING: (A) AN ANTENNA FOR RECEIVING ELECTROMAGNETIC WAVE ENERGY AND HAVING A DIRECTIONAL RESPONSE CHARACTERISTIC, SAID ANTENNA HAVING A VARIABLE PARAMETER AFFECTING SAID DIRECTIONAL RESPONSE CHARACTERISTIC; (B) MODULATING MEANS COUPLED TO SAID ANTENNA FOR CYCLICALLY MODULATING SAID VARIABLE PARAMETER AT A PREDETERMINED FREQUENCY TO PRODUCE A PLURALITY OF SIGNAL COMPONENTS, ONE OF SAID SIGNAL COMPONENTS BEING AT THE FREQUENCY OF SAID ELECTROMAGNETIC WAVE ENERGY AND THE REMAINING SIGNAL COMPONENTS BEING SEPARATED IN FREQUENCY THEREFROM IN MULTIPLES OF SAID MODULATING FREQUENCY; (C) FREQUENCY SELECTIVE MEANS COUPLED TO SAID ANTENNA AND ADJUSTED TO PASS A PREDETERMINED ONE OF SAID SIGNAL COMPONENTS, THE OUTPUT OF SAID FREQUENCY SELECTIVE MEANS BEING A SIGNAL HAVING A MODIFIED DIRECTIONAL RESPONSE CHARACTERISTIC COMPARED TO THAT OF SAID ANTENNA; (D) AND UTILIZATION MEANS COUPLED TO SAID FREQUENCY SELECTIVE MEANS.
References Cited (Backward Citations)
US2638585A
Cited
US2831190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |