Patent US5892487A successfully refreshed from Google Patents.
US5892487A
Expired / Lapsed
US
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Antenna system
Assignee: Vantiva SA
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Filing: 1997-07-28
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Granted: 1999-04-06
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Expires: 2017-07-28
Abstract
Abstract A feeder for a microwave antenna system which can be integrated together with electronic circuitry on a common circuit board. A slot antenna, preferably shaped as an annular slot, is provided on the circuit board, and can be etched on the backside of the circuit board, which is normally a ground plate. The antenna system can be used for reception of DBS signals.
Inventors
- 👤 Masahiro Fujimoto
- 👤 Ali Louzir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:28
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/247; H01Q13/00; H01Q13/10; H01Q13/18; H01Q19/00; H01Q19/10; H01Q19/12; H01Q19/13; H01Q21/00; H01Q21/24
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
95 words
Antenna system comprising: a parabolic reflector for focussing incoming radiation, and a feeder capable of feeding polarized waves, the feeder including a circuit board on which a single annular slot and a low noise block are arranged, said annular slot acting as an annular slot antenna for the focussed radiation and being provided on a ground plate of the circuit board, and a hybrid coupler with a first waveform stub positioned in the slot for receiving a first polarized signal and a second waveform stub positioned in the slot for receiving a second polarized signal.
Claim 2
Dependent Claim
95 words
Antenna system comprising: a parabolic reflector for focussing incoming radiation, and a feeder capable of feeding polarized waves, the feeder including a circuit board on which a single annular slot and a low noise block are arranged, said annular slot acting as an annular slot antenna for the focussed radiation and being provided on a ground plate of the circuit board, and a hybrid coupler with a first waveform stub positioned in the slot for receiving a first polarized signal and a second waveform stub positioned in the slot for receiving a second polarized signal.
Claim 3
Dependent Claim
29 words
Antenna system according to claim 1, wherein a cavity is installed on the side opposite of the slot antenna and is provided to concentrate the radiation into one direction.
Claim 4
Dependent Claim
33 words
The antenna system as recited in claim 1, wherein a phase of said first and second polarized signals are dependent upon a position of said first and second stubs about said annular slot.
Claim 5
Dependent Claim
19 words
The antenna system as recited in claim 1, wherein said first and second polarized signals are in quadrature phase.
Claim 6
Dependent Claim
75 words
Antenna system comprising: a focussing means, a feeder capable of feeding polarized waves, the feeder including a circuit board on which a single annular slot antenna and electronic means of a low noise block are arranged, and perturbation elements provided for the reception of circularly polarized signals and include a first perturbation segment provided at plus 45 degrees and a second perturbation segment provided at plus 225 degrees from an axis of an output feed.
Claim 7
Dependent Claim
75 words
Antenna system comprising: a focussing means, a feeder capable of feeding polarized waves, the feeder including a circuit board on which a single annular slot antenna and electronic means of a low noise block are arranged, and perturbation elements provided for the reception of circularly polarized signals and include a first perturbation segment provided at plus 45 degrees and a second perturbation segment provided at plus 225 degrees from an axis of an output feed.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-04-05 | 2002-10-05 | 2003-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-04-05 | 2006-10-05 | 2007-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-04-05 | 2010-10-05 | 2011-04-06 | $7700.00 | Window Closed / Lapsed |