US3104389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monopulse radar receiving system
Assignee: English Electric Co Ltd
•
Filing: 1954-08-16
•
Granted: 1963-09-17
•
Expires: 1974-08-16
Abstract
No abstract record available.
Inventors
- 👤 Ward Leslie Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:33
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/44; G01S13/4436
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A RADAR RECEIVING SYSTEM INCLUDING MEANS FOR RECEIVING A SIGNAL FROM A TARGET IN TWO CHANNELS IN SUCH A WAY THAT A DIFFERENCE IN A CHARACTERISTIC OF THE SIGNALS IN THE TWO CHANNELS REPRESENTS THE BEARING OF THE TARGET WITH RESPECT TO THE SYSTEM, MEANS FOR CONVERTING THE SIGNALS IN TWO CHANNELS TO A FIRST SIGNAL PROPORTIONAL TO THE SUM OF THE RECEIVED SIGNALS AND TO A SECOND SIGNAL PROPORTIONAL TO THE DIFFERENCE BETWEEN SAID RECEIVED SIGNALS, MEANS FOR CONVERTING SAID FIRST AND SECOND SIGNALS TO A LOWER FREQUENCY, MEANS FOR ADDING CYCLICALLY TO THE LOWER FREQUENCY SIGNAL DERIVED FROM SAID FIRST SIGNAL, THE LOWER FREQUENCY SIGNAL DERIVED FROM SAID SECOND SIGNAL IN A POSITIVE AND IN A NEGATIVE SENSE RESPECTIVELY, A COMMON AMPLI-
Claim 2
Dependent Claim
124 words
A RADAR RECEIVING SYSTEM INCLUDING MEANS FOR RECEIVING A SIGNAL FROM A TARGET IN TWO CHANNELS IN SUCH A WAY THAT A DIFFERENCE IN A CHARACTERISTIC OF THE SIGNALS IN THE TWO CHANNELS REPRESENTS THE BEARING OF THE TARGET WITH RESPECT TO THE SYSTEM, MEANS FOR CONVERTING THE SIGNALS IN TWO CHANNELS TO A FIRST SIGNAL PROPORTIONAL TO THE SUM OF THE RECEIVED SIGNALS AND TO A SECOND SIGNAL PROPORTIONAL TO THE DIFFERENCE BETWEEN SAID RECEIVED SIGNALS, MEANS FOR CONVERTING SAID FIRST AND SECOND SIGNALS TO A LOWER FREQUENCY, MEANS FOR ADDING CYCLICALLY TO THE LOWER FREQUENCY SIGNAL DERIVED FROM SAID FIRST SIGNAL, THE LOWER FREQUENCY SIGNAL DERIVED FROM SAID SECOND SIGNAL IN A POSITIVE AND IN A NEGATIVE SENSE RESPECTIVELY, A COMMON AMPLI-
References Cited (Backward Citations)
US2423104A
Cited
US2456666A
Cited
US2509207A
Cited
US2682656A
Cited
US2637028A
Cited
US2687520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |