US4117488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multipurpose, multifunction antenna
Assignee: International Telephone and Telegraph Corp
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Filing: 1976-01-21
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Granted: 1978-09-26
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Expires: 1996-01-21
Abstract
Abstract A dual circularly polarized radiating and receiving arrangement is coupled to a dual circular polarizer which has coupled thereto a transmit port and a receive port. A circuit arrangement is coupled to both of the ports to enable radiation of a selected one of vertical linearly polarized waves, one of right hand and left hand dual circularly polarized waves and linearly polarized waves having a selected angle of polarization and reception of the other of the right hand and left hand dual circularly polarized waves.
Inventors
- 👤 Emmanual Joseph Perrotti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:24
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/10; H01Q19/12; H01Q19/13; H01Q19/134; H01Q19/136; H01Q21/00; H01Q21/24; H01Q21/245
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
184 words
A multipurpose multifunction antenna comprising: a dual circularly polarized radiating and receiving means; a dual circular polarizer coupled to said means; a transmit port coupled to said polarizer; a receive port coupled to said polarizer; and a circuit arrangement coupled to said transmit and receive ports to enable radiation of a selected one of vertical linearly polarized waves, one of right hand and left hand dual circularly polarized waves and linearly polarized waves having a selected angle of polarization and reception of the other of right hand and left hand dual circularly polarized waves; said polarizer being an iris circular polarizer; said means including a backsplash radiating and receiving device coupled to said polarizer disposed at the focal point of a reflector; said reflector being a parabolic reflector; and said circuit arrangement including a transmitter, a variable delay device coupled to said transmit port, a transmit filter coupled to said receive port, a receive filter coupled to said receive port, a switch having a neutral position to provide a three decibel power splitter coupled to said transmitter, said delay device and said transmit filter.
Claim 2
Dependent Claim
184 words
A multipurpose multifunction antenna comprising: a dual circularly polarized radiating and receiving means; a dual circular polarizer coupled to said means; a transmit port coupled to said polarizer; a receive port coupled to said polarizer; and a circuit arrangement coupled to said transmit and receive ports to enable radiation of a selected one of vertical linearly polarized waves, one of right hand and left hand dual circularly polarized waves and linearly polarized waves having a selected angle of polarization and reception of the other of right hand and left hand dual circularly polarized waves; said polarizer being an iris circular polarizer; said means including a backsplash radiating and receiving device coupled to said polarizer disposed at the focal point of a reflector; said reflector being a parabolic reflector; and said circuit arrangement including a transmitter, a variable delay device coupled to said transmit port, a transmit filter coupled to said receive port, a receive filter coupled to said receive port, a switch having a neutral position to provide a three decibel power splitter coupled to said transmitter, said delay device and said transmit filter.
Claim 3
Dependent Claim
177 words
A multipurpose multifunction antenna comprising: a dual circularly polarized radiating and receiving means; a dual circular polarizer coupled to said means; a transmit port coupled to said polarizer; a receive port coupled to said polarizer; and a circuit arrangement coupled to said transmit and receive ports to enable radiation of a selected one of vertical linearly polarized waves, one of right hand and left hand dual circularly polarized waves and linearly polarized waves having a selected angle of polarization and reception of the other of right hand and left hand dual circularly polarized waves; said means including a backsplash radiating and receiving device coupled to said polarizer disposed at the focal point of a reflector; said reflector being a parabolic reflector; and said circuit arrangement including a transmitter, a variable delay device coupled to said transmit port, a transmit filter coupled to said receive port, a receive filter coupled to said receive port, a switch having a neutral position to provide a three decibel power splitter coupled to said transmitter, said delay device and said transmit filter.
Claim 4
Dependent Claim
177 words
A multipurpose multifunction antenna comprising: a dual circularly polarized radiating and receiving means; a dual circular polarizer coupled to said means; a transmit port coupled to said polarizer; a receive port coupled to said polarizer; and a circuit arrangement coupled to said transmit and receive ports to enable radiation of a selected one of vertical linearly polarized waves, one of right hand and left hand dual circularly polarized waves and linearly polarized waves having a selected angle of polarization and reception of the other of right hand and left hand dual circularly polarized waves; said means including a backsplash radiating and receiving device coupled to said polarizer disposed at the focal point of a reflector; said reflector being a parabolic reflector; and said circuit arrangement including a transmitter, a variable delay device coupled to said transmit port, a transmit filter coupled to said receive port, a receive filter coupled to said receive port, a switch having a neutral position to provide a three decibel power splitter coupled to said transmitter, said delay device and said transmit filter.
Claim 5
Dependent Claim
149 words
A multipurpose multifunction antenna comprising: a dual circularly polarized radiating and receiving means; a dual circular polarizer coupled to said means; a transmit port coupled to said polarizer; a receive port coupled to said polarizer; and a circuit arrangement coupled to said transmit and receive ports to enable radiation of a selected one of vertical linearly polarized waves, one of right hand and left hand dual circularly polarized waves and linearly polarized waves having a selected angle of polarization and reception of the other of right hand and left hand dual circularly polarized waves; said circuit arrangement including a transmitter, a variable delay device coupled to said transmit port, a transmit filter coupled to said receive port, a receive filter coupled to said receive port, a switch having a neutral position to provide a three decibel power splitter coupled to said transmitter, said delay device and said transmit filter.
Claim 6
Dependent Claim
149 words
A multipurpose multifunction antenna comprising: a dual circularly polarized radiating and receiving means; a dual circular polarizer coupled to said means; a transmit port coupled to said polarizer; a receive port coupled to said polarizer; and a circuit arrangement coupled to said transmit and receive ports to enable radiation of a selected one of vertical linearly polarized waves, one of right hand and left hand dual circularly polarized waves and linearly polarized waves having a selected angle of polarization and reception of the other of right hand and left hand dual circularly polarized waves; said circuit arrangement including a transmitter, a variable delay device coupled to said transmit port, a transmit filter coupled to said receive port, a receive filter coupled to said receive port, a switch having a neutral position to provide a three decibel power splitter coupled to said transmitter, said delay device and said transmit filter.
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) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |