Patent US3715749A successfully refreshed from Google Patents.
US3715749A
Expired / Lapsed
US
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Multi-beam radio frequency system
Assignee: Raytheon Co
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Filing: 1971-05-11
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Granted: 1973-02-06
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Expires: 1991-05-11
Abstract
Abstract A transmitting/receiving system for radio frequency energy is shown, such system incorporating a multi-beam array antenna and appropriate control circuitry to adapt the system to operation simultaneously as a radar, as a relay or as a transponder.
Inventors
- 👤 D Archer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:24
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/76; G01S13/767; G01S7/00; G01S7/003; G01S7/006; H; H01; H01Q; H01Q25/00; H01Q25/007; H01Q25/008
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
144 words
In a transmitting/receiving system wherein receiving and transmitting multi-beam array antenna assemblies are used to form similarly directed beams of radio frequency energy, each one of such assemblies including a feed port corresponding to a different one of such beams, control circuitry comprising: a. connecting means, including a transmission line and a radio frequency switch in circuit between selected pairs of feed ports in the receiving and the transmitting multi-beam array antenna assemblies, for providing a path for radio frequency energy between the feed ports in each selected pair thereof; and, b. switch control means, responsive to the level of radio frequency energy at each different feed port in the receiving multi-beam array antenna assembly, for actuating the corresponding radio frequency switch to complete the path for radio frequency energy between each selected pair of feed ports when such level exceeds a predetermined level.
Claim 2
Dependent Claim
144 words
In a transmitting/receiving system wherein receiving and transmitting multi-beam array antenna assemblies are used to form similarly directed beams of radio frequency energy, each one of such assemblies including a feed port corresponding to a different one of such beams, control circuitry comprising: a. connecting means, including a transmission line and a radio frequency switch in circuit between selected pairs of feed ports in the receiving and the transmitting multi-beam array antenna assemblies, for providing a path for radio frequency energy between the feed ports in each selected pair thereof; and, b. switch control means, responsive to the level of radio frequency energy at each different feed port in the receiving multi-beam array antenna assembly, for actuating the corresponding radio frequency switch to complete the path for radio frequency energy between each selected pair of feed ports when such level exceeds a predetermined level.
Claim 3
Dependent Claim
144 words
In a transmitting/receiving system wherein receiving and transmitting multi-beam array antenna assemblies are used to form similarly directed beams of radio frequency energy, each one of such assemblies including a feed port corresponding to a different one of such beams, control circuitry comprising: a. connecting means, including a transmission line and a radio frequency switch in circuit between selected pairs of feed ports in the receiving and the transmitting multi-beam array antenna assemblies, for providing a path for radio frequency energy between the feed ports in each selected pair thereof; and, b. switch control means, responsive to the level of radio frequency energy at each different feed port in the receiving multi-beam array antenna assembly, for actuating the corresponding radio frequency switch to complete the path for radio frequency energy between each selected pair of feed ports when such level exceeds a predetermined level.
Claim 4
Dependent Claim
144 words
In a transmitting/receiving system wherein receiving and transmitting multi-beam array antenna assemblies are used to form similarly directed beams of radio frequency energy, each one of such assemblies including a feed port corresponding to a different one of such beams, control circuitry comprising: a. connecting means, including a transmission line and a radio frequency switch in circuit between selected pairs of feed ports in the receiving and the transmitting multi-beam array antenna assemblies, for providing a path for radio frequency energy between the feed ports in each selected pair thereof; and, b. switch control means, responsive to the level of radio frequency energy at each different feed port in the receiving multi-beam array antenna assembly, for actuating the corresponding radio frequency switch to complete the path for radio frequency energy between each selected pair of feed ports when such level exceeds a predetermined level.
Claim 5
Dependent Claim
82 words
Control circuitry as in claim 1 wherein the switch control means includes: a. a direction coupler disposed in each transmission line from the receiving multi-beam array antenna assembly for sensing radio frequency energy from each one of the feedports in such assembly; and, b. a controller for each radio frequency switch, such controller being responsive to the level of radio frequency energy out of the directional coupler to open the radio frequency switch when such level is less than the predetermined level.
Claim 6
Dependent Claim
48 words
Control circuitry as in claim 2 wherein the connecting means includes, additionally: a. a radio frequency amplifier responsive to the radio frequency energy passing through the radio frequency switch, for amplifying such energy before it is applied to the feed port in the transmitting multi-beam array antenna assembly.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |