US3633205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wideband interferometer type antenna systems
Assignee: Lockheed Martin Tactical Systems Inc
•
Filing: 1969-06-30
•
Granted: 1972-01-04
•
Expires: 1989-06-30
Abstract
Abstract Wideband interferometer systems each employing two fine channels, and means for synthesizing a coarse channel from signals received by said fine channels. One embodiment is adapted to be used in conjunction with a sophisticated computer on a time-sharing basis. The other embodiment includes simple truth table logic circuitry to provide a self-contained device.
Inventors
- 👤 Tsze K Lee
- 👤 Jeffrey N Brooks
- 👤 Ralph Logan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:25
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/02; G01S3/14; G01S3/46; G01S3/48
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
116 words
In a wide-band antenna interferometer system including first, second and third antennas, and employing two sets of received information, the improvement comprising: each of said first, second and third antennae being mutually spaced a distance at least equal to the wavelength of the highest frequency received, the distance between the first and second antennae being greater than the distance between said second and third antennae by at least one half the wavelength of said highest frequency; each of said sets of information constituting a fine channel, and means for synthesizing a coarse channel from said fine channels; said last mentioned means including IF hybrid combinations and harmonic generators interconnected to provide for truth table type logic.
Claim 2
Dependent Claim
116 words
In a wide-band antenna interferometer system including first, second and third antennas, and employing two sets of received information, the improvement comprising: each of said first, second and third antennae being mutually spaced a distance at least equal to the wavelength of the highest frequency received, the distance between the first and second antennae being greater than the distance between said second and third antennae by at least one half the wavelength of said highest frequency; each of said sets of information constituting a fine channel, and means for synthesizing a coarse channel from said fine channels; said last mentioned means including IF hybrid combinations and harmonic generators interconnected to provide for truth table type logic.
Claim 3
Dependent Claim
25 words
Structure in accordance with claim 1, including a pair of phase comparator bridges interconnected to a switching matrix, and a plurality of fine channel quantizers.
References Cited (Backward Citations)
US3148369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |