Patent US5212813A successfully refreshed from Google Patents.
US5212813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the coupling to a common antenna of at least two transmitting and/or receiving devices
Assignee: Dassault Aviation SA
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Filing: 1991-02-26
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Granted: 1993-05-18
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Expires: 2011-02-26
Abstract
Abstract This device is intended for the coupling to a same antenna of at least two devices for transmitting and/or receiving microwave frequency signals operating in a same frequency range but having separated working bands. It is constituted by a circuit (M) comprising four passive filters (F 1 -F 4 ) and two circulators (C 1 , C 2 ) defining four channels for respectively coupling each of the transmitters (E A , E B ) and receivers (R A , R B ) of the two devices (A, B) to the antenna. Each circulator (C 1 ; C 2 ) is connected by the intermediary of a filter to the transmitter of one of the devices and to the receiver of the other device in order to couple them to the antenna, while isolating them from each other. The invention has an application for coupling transmitting and/or receiving devices installed in aircrafts.
Inventors
- 👤 Laurent Renaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:27
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/213
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
323 words
Device for the coupling to at least one common antenna of at least two devices for transmitting and receiving microwave frequency signals operating in a same frequency range but having separated working bands, a four-channel circuit comprising: - a first channel for coupling a transmitter of a first device to the antenna by the intermediary of a first passive filter and of a first circulator, - a second channel for coupling a receiver of said first device to the antenna by the intermediary of a second passive filter and of a second circulator, - a third channel for coupling a transmitter of a second device to the antenna by the intermediary of a third passive filter and of said second circulator, and - a fourth channel for coupling a receiver of said second device to the antenna by the intermediary of a fourth passive filter and of said first circulator, said first passive filter is a band pass filter centered on the middle of the working band of said transmitter of said first device; said second passive filter is a band pass filter centered on the middle of the working band of said receiver of said first device; said third passive filter is a band rejection filter centered on the middle of the working band of said receiver of said first device; said fourth passive filter is a band rejection filter centered on the middle of the working band of said receiver of said first device; each circulator being connected to the transmitter of one of said devices and to the receiver of the other of said devices to allow the transmission of signals from said transmitter of one of said devices to the antenna and from the latter to said receiver of said other of said devices and to inhibit the transmission of signals from said transmitter of said one of said devices to said receiver of said other of said devices.
Claim 2
Dependent Claim
323 words
Device for the coupling to at least one common antenna of at least two devices for transmitting and receiving microwave frequency signals operating in a same frequency range but having separated working bands, a four-channel circuit comprising: - a first channel for coupling a transmitter of a first device to the antenna by the intermediary of a first passive filter and of a first circulator, - a second channel for coupling a receiver of said first device to the antenna by the intermediary of a second passive filter and of a second circulator, - a third channel for coupling a transmitter of a second device to the antenna by the intermediary of a third passive filter and of said second circulator, and - a fourth channel for coupling a receiver of said second device to the antenna by the intermediary of a fourth passive filter and of said first circulator, said first passive filter is a band pass filter centered on the middle of the working band of said transmitter of said first device; said second passive filter is a band pass filter centered on the middle of the working band of said receiver of said first device; said third passive filter is a band rejection filter centered on the middle of the working band of said receiver of said first device; said fourth passive filter is a band rejection filter centered on the middle of the working band of said receiver of said first device; each circulator being connected to the transmitter of one of said devices and to the receiver of the other of said devices to allow the transmission of signals from said transmitter of one of said devices to the antenna and from the latter to said receiver of said other of said devices and to inhibit the transmission of signals from said transmitter of said one of said devices to said receiver of said other of said devices.
Claim 3
Dependent Claim
19 words
Device according to claim 1, wherein the transmitter and the receiver of the first device have separated working bands.
Claim 4
Dependent Claim
85 words
Device according to claim 2, wherein said circuit comprises at least a third circulator having a first terminal for the connection thereof to the transmitter and to the receiver of one of said devices, a second terminal connected to one of said first and third channels for coupling said transmitter of said one of said devices to the antenna and a third terminal connected to one of said second and fourth channels for coupling said receiver of said one of said devices to the antenna.
Claim 5
Dependent Claim
95 words
Device according to claim 2, wherein said circuit comprises several four-channel circuits connected in cascade for the coupling to the common antenna of several transmitting and receiving devices operating in a same microwave frequency range but having separated working bands, said first and fourth filter of each circuit having a bandwidth covering the working bands of all the transmitters connected to the first channel of said circuit, and said second and third filters of said circuit having a bandwidth covering the working bands of all the receivers connected to said second channel of said circuit.
Claim 6
Dependent Claim
83 words
Device according to claim 1, wherein said circuit comprises at least a third circulator having a first terminal for the connection thereof to the transmitter and to the receiver of one of said devices, a second terminal connected to one of said first and third channels for coupling said transmitter of one of said devices to said antenna and a third terminal connected to one of said second and fourth channels for coupling said receiver of one of said devices to said antenna.
Claim 7
Dependent Claim
86 words
Device according to claim 5, wherein said circuit comprises a fourth circulator having a first terminal for the connection thereof to the transmitter and to the receiver of the other of said devices, a second terminal connected to the other of said first and third channels for coupling said transmitter of said other of said devices to said antenna and a third terminal connected to the other of said second and fourth channels for coupling said receiver of said other of said devices to the antenna.
Claim 8
Dependent Claim
92 words
Device according to claim 6, further comprising several four-channel circuits connected in cascade for the coupling to said antenna of several transmitting and receiving devices operating in the same microwave frequency range but having separated working bands, said first and fourth filters of each circuit having a bandwidth covering the working bands of all the transmitters connected to the first channel of said circuit, and said second and third filters of said circuit having a bandwidth covering the working bands of all the receivers connected to the second channel of said circuit.
Claim 9
Dependent Claim
32 words
Device according to claim 7 wherein each circuit connected to the antenna through another circuit is connected to said another circuit by the intermediary of one of said third and fourth circulators.
Claim 10
Dependent Claim
59 words
Device according to claim 8 for the coupling to said common antenna of several groups of transmitting and receiving devices each operating in a microwave frequency range which is distinct from that of the other groups of the devices, wherein each group of devices is directly coupled to said antenna by at least one of said several four-channel circuits.
Claim 11
Dependent Claim
94 words
Device according to claim 5, wherein said circuit comprises several four-channel circuits connected in cascade for the coupling to said antenna of several transmitting and receiving devices operating in the same microwave frequency range but having separated working bands, said first and fourth filters of each circuit having a bandwidth covering the working bands of all the transmitters connected to the first channel of said circuit, and said second and third filters of said circuit having a bandwidth covering the working bands of all the receivers connected to said second channel of said circuit.
Claim 12
Dependent Claim
28 words
Device according to claim 10, wherein each circuit connected to the antenna through another circuit is connected to said another circuit by the intermediary of said third circulator.
Claim 13
Dependent Claim
58 words
Device according to claim 11 for the coupling to said common antenna of several groups of transmitting and receiving devices each operating in a microwave frequency range which is distinct from that of the other groups of devices, wherein each group of devices is directly coupled to said antenna by at least one of said several four-channel circuits.
Claim 14
Dependent Claim
94 words
Device according to claim 1, wherein said circuit comprises several four-channel circuits connected in cascade for the coupling to said antenna of several transmitting and receiving devices operating in a same microwave frequency range but having separated working bands, said first and fourth filters of each circuit having a bandwidth covering the working bands of all the transmitters connected to the first channel of said circuit, and said second and third filters of said circuit having a bandwidth covering the working bands of all the receivers connected to said second channel of said circuit.
Claim 15
Dependent Claim
54 words
Device according to claim 1 for the coupling to said common antenna of several groups of transmitting and receiving devices each operating in a microwave frequency range distinct from that of the other groups of devices, wherein each group of devices is directly coupled to said antenna by at least one four channel circuits.
Claim 16
Dependent Claim
19 words
Device according to claim 1, wherein each connection between said filters and said circulators comprises an impedance matching isolator.
References Cited (Backward Citations)
US3725942A
Cited
US3636452A
Cited
US3742506A
Cited
US4211894A
Cited
US4449128A
Cited
JPS5972824A
Cited
JPS59225622A
Cited
JPS60233943A
Cited
US5023866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-17 | 1996-11-16 | 1997-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-17 | 2000-11-16 | 2001-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-17 | 2004-11-16 | 2005-05-18 | $7700.00 | Window Closed / Lapsed |