US3922680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Space feed receiver array
Assignee: United States Department of the Army
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Filing: 1974-08-28
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Granted: 1975-11-25
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Expires: 1994-08-28
Abstract
Abstract A space feed phased array receiver system provides independent steering of discrimination and tracking clusters in the space feed by dividing each antenna cartridge into two channels. Each channel operates over a different portion of the RF band; each radiates a different sense of polarization to the focal region; and each is independently steered.
Inventors
- 👤 Dietrich A Alsberg
- 👤 Raymond D Tuminaro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:35
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/44; H01Q3/46
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
338 words
An array antenna system comprising a plurality of cartridge means mounted in close spacial relationship to each other to form a unitary body; each cartridge means having an input and an output; a receiver unit having an input; each cartridge means detecting electromagnetic radiation entering its input and converting this radiation into an electrical signal which is split into two signals which are separately processed and are radiated out of the output of the cartridge means orthogonally polarized to each other; said receiver unit being located spacially from said plurality of cartridge means; the output radiations of said plurality of cartridge means being sent spacially to the input of said receiver unit; each cartridge means contains an elementary antenna located as the input of the cartridge means; a signal splitting means having an input and two outputs for splitting the signal at its input into two signals, one fed to one output and the other fed to the other output; said elementary antenna generating an electrical signal at its output in response to electrical magnetic energy received; the output of the elementary antenna being connected to the input of the signal splitting means; first and second phase shifters each having an input and an output; the output of the first signal splitting means being connected to the input of the first phase shifter; the other output of the phase splitting means being connected to the input of the second phase shifter; a dual polarized horn means having first and second inputs and first and second outputs; the output of the first phase shifter being connected to the horn means first input; the output of the second phase shifter being connected to the horn means second input; said horn means being the output of the cartridge means and generating the orthogonally polarized radiations; the output of each elementary antenna is a band of frequencies; and said signal splitting means being a diplexer means which divides the frequency band output of the elementary antenna into first and second frequency bands.
Claim 2
Dependent Claim
338 words
An array antenna system comprising a plurality of cartridge means mounted in close spacial relationship to each other to form a unitary body; each cartridge means having an input and an output; a receiver unit having an input; each cartridge means detecting electromagnetic radiation entering its input and converting this radiation into an electrical signal which is split into two signals which are separately processed and are radiated out of the output of the cartridge means orthogonally polarized to each other; said receiver unit being located spacially from said plurality of cartridge means; the output radiations of said plurality of cartridge means being sent spacially to the input of said receiver unit; each cartridge means contains an elementary antenna located as the input of the cartridge means; a signal splitting means having an input and two outputs for splitting the signal at its input into two signals, one fed to one output and the other fed to the other output; said elementary antenna generating an electrical signal at its output in response to electrical magnetic energy received; the output of the elementary antenna being connected to the input of the signal splitting means; first and second phase shifters each having an input and an output; the output of the first signal splitting means being connected to the input of the first phase shifter; the other output of the phase splitting means being connected to the input of the second phase shifter; a dual polarized horn means having first and second inputs and first and second outputs; the output of the first phase shifter being connected to the horn means first input; the output of the second phase shifter being connected to the horn means second input; said horn means being the output of the cartridge means and generating the orthogonally polarized radiations; the output of each elementary antenna is a band of frequencies; and said signal splitting means being a diplexer means which divides the frequency band output of the elementary antenna into first and second frequency bands.
Claim 3
Dependent Claim
140 words
A system as set forth in claim 1 wherein said receiver unit comprises at least one further dual polarized horn means located spacially from the horn means of each cartridge means; said further horn means each having first and second inputs and first and second outputs; the first input of said further horn means being aligned so as to pass any signal output from said first output of the plurality of horn means located in the cartridge means; said second input of said further horn means being aligned such that it will pass any signal outputs of the second outputs of the plurality of horn means in said cartridge means; first and second receiver means for each horn means; and means connecting the first and second outputs of each further horn means respectively to each first and second receiver means.
Claim 4
Dependent Claim
76 words
A system as set forth in claim 2 further comprising first and second filter means located respectively between the first and second outputs of said further horn means and said first and second receiver means; said first filter means passing frequencies of said first frequency band but not passing frequencies of said second frequency band; and said second filter means passing frequencies of said second frequency band but not passing frequencies of said first frequency band.
Claim 5
Dependent Claim
31 words
A system as set forth in claim 3 wherein each cartridge means further comprises a preamplifier connected between the output of the elementary antenna and the input of the diplexer means.
Claim 6
Independent Claim
60 words
A system as set forth in cliam 1 wherein said receiver unit comprises a plurality of dual polarized horn means located spacially from the horn means of said cartridge means; and lens correcting device located between the horn means of said cartridge and the plurality of the horn means of the receiver unit so as to compensate for optical aberrations.
Claim 7
Independent Claim
60 words
A system as set forth in cliam 1 wherein said receiver unit comprises a plurality of dual polarized horn means located spacially from the horn means of said cartridge means; and lens correcting device located between the horn means of said cartridge and the plurality of the horn means of the receiver unit so as to compensate for optical aberrations.
Claim 8
Dependent Claim
170 words
A system as set forth in claim 5 wherein each receiver unit comprises a dual polarized horn means located spacially from the horn means of the cartridge means; said horn means each having first and second inputs and first and second outputs; the first input of each horn means being aligned so as to pass any signal output from the first output of the plurality of horn means located in the cartridge means; said second input of each horn means being aligned such that it will pass any signal outputs of the second outputs of said plurality of horn means in the cartridge means; first and second receiver means for each horn means; said first and second outputs of each receiver horn means being connected respectively to each first and second receiver means; and further comprising first and second variable attenuators connected respectively between the outputs of said first and second phase shifters and the first and second inputs of said dual polarized horn means located in the cartridge means.
References Cited (Backward Citations)
US3568184A
Cited
US3496569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |