Patent US3836972A successfully refreshed from Google Patents.
US3836972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Four-horn radiometric tracking rf system
Assignee: United States Department of the Air Force
•
Filing: 1973-04-16
•
Granted: 1974-09-17
•
Expires: 1993-04-16
Abstract
Abstract A radiometric system having two pairs of null seeking horns with two positional outputs and an amplitude output for summing and automatic gain control. The positional output in each pair is constantly switched alternately between adjacent horns in each pair. Each of the horns not connected to the positional outputs is fed to a third switch which feeds the sum and the AGC circuits.
Inventors
- 👤 W Conway
- 👤 J Aukland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:03
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/02; G01S3/14; G01S3/38; G01S3/42
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
62 words
A radiometric system comprising: a. first and second pairs of adjacent radiometric horns; b. first and second switches alternately connecting one each of the first and second pairs of horns to a pair of outputs, one of the outputs being a positional output and the other being a common amplitude output; and c. a third switch fed by the common amplitude outputs.
Claim 2
Dependent Claim
62 words
A radiometric system comprising: a. first and second pairs of adjacent radiometric horns; b. first and second switches alternately connecting one each of the first and second pairs of horns to a pair of outputs, one of the outputs being a positional output and the other being a common amplitude output; and c. a third switch fed by the common amplitude outputs.
Claim 3
Dependent Claim
17 words
A radiometric system according to claim 1 wherein the first, second and third switches are circulating switches.
Claim 4
Dependent Claim
15 words
A radiometric system according to claim 2 wherein the positional outputs are elevation and azimuth.
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) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |