Patent US3128430A successfully refreshed from Google Patents.
US3128430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase shifting system for phased antenna arrays
Assignee: Lockheed Martin Corp
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Filing: 1962-01-09
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Granted: 1964-04-07
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Expires: 1982-01-09
Abstract
No abstract record available.
Inventors
- 👤 Martin R Richmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:20
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/02; H03H11/16; H03H11/22; H01; H01Q; H01Q3/00; H01Q3/26; H01Q3/30; H01Q3/34; H01Q3/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A STEERABLE BEAM MULTI-ELEMENT ANTENNA ARRAY COMPRISING, IN COMBINATION, (A) A FIRST VOLTAGE SOURCE HAVING A FIRST FREQUENCY, (B) A SECOND VOLTAGE SOURCE HAVING A SECOND FREQUENCY, (C) A VARIABLE PHASE SHIFTER CONNECTED TO SAID FIRST SOURCE TO DEVELOP A DELAYED VOLTAGE AT SAID FIRST FREQUENCY, (D) A FIRST FREQUENCY COMBINER CONNECTED TO SAID SECOND SOURCE AND WITH SAID PHASE SHIFTER TO DEVELOP A COMBINED VOLTAGE HAVING A THIRD FREQUENCY EQUAL TO ONE OF THE SUM AND DIFFERENCE OF SAID FIRST AND SECOND FREQUENCIES, (E) A SECOND FREQUENCY COMBINER CONNECTED TO RECEIVE SAID COMBINED VOLTAGE AND SAID FIRST SOURCE AND DEVELOP AN OUTPUT VOLTAGE WHOSE FREQUENCY IS THE OTHER OF THE SUM AND DIFFERENCE OF SAID FIRST AND THIRD FREQUENCIES AND THUS EQUAL TO SAID SECOND FREQUENCY, (F) A PLURALITY OF RADIATING ELEMENTS, (G) TRANSMISSION MEANS CONNECTED BETWEEN SAID ELEMENTS AND SAID SECOND COMBINER AND SECOND SOURCE TO DELIVER SAID OUTPUT VOLTAGE AND DELAYED VOLTAGE TO SAID ELEMENTS, (H) WHEREBY THE RADIATION PATTERN OF SAID ARRAY IS DIRECTED IN DIFFERENT DIRECTIONS WHEN THE PHASE DELAY IMPARTED BY SAID PHASE SHIFTER IS CHANGED.
Claim 2
Dependent Claim
182 words
A STEERABLE BEAM MULTI-ELEMENT ANTENNA ARRAY COMPRISING, IN COMBINATION, (A) A FIRST VOLTAGE SOURCE HAVING A FIRST FREQUENCY, (B) A SECOND VOLTAGE SOURCE HAVING A SECOND FREQUENCY, (C) A VARIABLE PHASE SHIFTER CONNECTED TO SAID FIRST SOURCE TO DEVELOP A DELAYED VOLTAGE AT SAID FIRST FREQUENCY, (D) A FIRST FREQUENCY COMBINER CONNECTED TO SAID SECOND SOURCE AND WITH SAID PHASE SHIFTER TO DEVELOP A COMBINED VOLTAGE HAVING A THIRD FREQUENCY EQUAL TO ONE OF THE SUM AND DIFFERENCE OF SAID FIRST AND SECOND FREQUENCIES, (E) A SECOND FREQUENCY COMBINER CONNECTED TO RECEIVE SAID COMBINED VOLTAGE AND SAID FIRST SOURCE AND DEVELOP AN OUTPUT VOLTAGE WHOSE FREQUENCY IS THE OTHER OF THE SUM AND DIFFERENCE OF SAID FIRST AND THIRD FREQUENCIES AND THUS EQUAL TO SAID SECOND FREQUENCY, (F) A PLURALITY OF RADIATING ELEMENTS, (G) TRANSMISSION MEANS CONNECTED BETWEEN SAID ELEMENTS AND SAID SECOND COMBINER AND SECOND SOURCE TO DELIVER SAID OUTPUT VOLTAGE AND DELAYED VOLTAGE TO SAID ELEMENTS, (H) WHEREBY THE RADIATION PATTERN OF SAID ARRAY IS DIRECTED IN DIFFERENT DIRECTIONS WHEN THE PHASE DELAY IMPARTED BY SAID PHASE SHIFTER IS CHANGED.
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) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |