US5289197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pane antenna having an amplifier
Assignee: Fuba Automotive GmbH and Co KG
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Filing: 1992-06-16
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Granted: 1994-02-22
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Expires: 2012-06-16
Abstract
Abstract An active reception antenna arranged on a non-conductive flat supporting piece (1, 2) set in a conductive body (2) of a motor vehicle, has an active four terminal network (5) having two input terminals (6a, 6b) and two output terminals (7a, 7b), an elongated antenna conductor (3a) secured on the supporting piece, an output transmission line (8) having a first section (14) of well defined layout which is connected to the output terminals (7a, 7b) and forms another antenna conductor (14) with a length (20) introducing a non-negligible however defined impedance for high frequencies between one of the output terminals (7b) and a ground contact (10), the input terminals (6a, 6b) being connected to the first mentioned elongated antenna conductor (3a) and to the other antenna conductor (14), providing an appropriate source impedance at the input of the active four terminal network, the output transmission line (8) having a second section (15) which is connected to the ground contact (10) and also to an inner connector (11a) of the first section (14) of the output transmission line (8), the inner connector (11a) being connected with another of the output terminals (7a), the one output terminal (7b) being connected to the ground contact (10).
Inventors
- 👤 Heinz Lindenmeier
- 👤 deceased Gerhard Flachenecker
- 👤 Jochen Hopf
- 👤 Leopold Reiter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:46
CPC Classifications
H; H01; H01Q; H01Q23/00; H01Q1/00; H01Q1/12; H01Q1/1271
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
269 words
An active reception antenna arranged on a non-conductive flat supporting piece (1, 12) set in a conductive body (2) of a motor vehicle, comprising: an active four terminal network (5) having two input terminals (6a, 6b) and two output terminals (7a, 7b); a first elongated antenna conductor (3a) secured on the supporting piece; an output transmission line (8) having a first section (14) of well defined layout which is connected to said output terminals (7a, 7b) and forms a second antenna conductor (14) with a length (20), introducing a non-negligible, however defined, impedance for high frequencies between one of said output terminals (7b) and a ground contact (10), said input terminals (6a, 6b) being connected to said first elongated antenna conductor (3a) and to said second antenna conductor (14), providing an appropriate source impedance at the input of the active four terminal network, said output transmission line (8) having a second section (15) which is connected to said ground contact (10) and also to an inner connector (11a) of said first section (14) of said output transmission line (8), said inner connector (11a) being connected with the other of said output terminals (7a), said one of said output terminals (7b) being connected to said ground contact (10), said flat supporting piece being a window pane surrounded by a broad plastic frame, said active four terminal network being secured to the pane in proximity to an edge of the pane and said first section of the output transmission line extending from said output terminals of the active four terminal network tot he nearest grounding point on the conductive vehicle body.
Claim 2
Dependent Claim
269 words
An active reception antenna arranged on a non-conductive flat supporting piece (1, 12) set in a conductive body (2) of a motor vehicle, comprising: an active four terminal network (5) having two input terminals (6a, 6b) and two output terminals (7a, 7b); a first elongated antenna conductor (3a) secured on the supporting piece; an output transmission line (8) having a first section (14) of well defined layout which is connected to said output terminals (7a, 7b) and forms a second antenna conductor (14) with a length (20), introducing a non-negligible, however defined, impedance for high frequencies between one of said output terminals (7b) and a ground contact (10), said input terminals (6a, 6b) being connected to said first elongated antenna conductor (3a) and to said second antenna conductor (14), providing an appropriate source impedance at the input of the active four terminal network, said output transmission line (8) having a second section (15) which is connected to said ground contact (10) and also to an inner connector (11a) of said first section (14) of said output transmission line (8), said inner connector (11a) being connected with the other of said output terminals (7a), said one of said output terminals (7b) being connected to said ground contact (10), said flat supporting piece being a window pane surrounded by a broad plastic frame, said active four terminal network being secured to the pane in proximity to an edge of the pane and said first section of the output transmission line extending from said output terminals of the active four terminal network tot he nearest grounding point on the conductive vehicle body.
Claim 3
Dependent Claim
86 words
An antenna as defined in claim 1, wherein said active four terminal network has input and output parts and includes a low noise amplifier at its output part and passive low loss reactive elements at its input part; said first antenna conductor, said first section of the output transmission line and said reactive elements in the active four terminal network being constructed for matching impedances between said first antenna conductor and said active four terminal network to improve the signal to noise ratio of the antenna.
Claim 4
Dependent Claim
53 words
An antenna as defined in claim 1, wherein said active four terminal network is a low noise amplifier; said first antenna conductor and said first section of the output transmission line being dimensioned such as to match impedances between said first antenna conductor and said amplifier to improve the signal to noise ratio.
Claim 5
Dependent Claim
19 words
An antenna as defined in claim 1, wherein said output transmission line is in the form of a cable.
Claim 6
Dependent Claim
36 words
An antenna as defined in claim 1, wherein said flat supporting piece consisting of the window pane surrounded by the plastic frame is installed in the trunk lid or rear trap door of the motor vehicle.
Claim 7
Dependent Claim
32 words
An antenna as defined in claim 5, wherein said rear trap door is linked to the vehicle body by hinges and said output transmission line is guided through passages in said hinges.
Claim 8
Dependent Claim
43 words
An antenna as defined in claim 5, wherein a conductive strip is arranged along at least one edge of said pane and is connected for high frequencies to one of said input terminals to form an electrical counterbalance for said first antenna conductor.
Claim 9
Dependent Claim
21 words
An antenna as defined in claim 1, wherein said first section of the output transmission line includes a twin wire cable.
Claim 10
Dependent Claim
17 words
An antenna as defined in claim 1, wherein said ground contact is effected via a galvanic connection.
Claim 11
Dependent Claim
28 words
An antenna as defined in claim 1, further comprising an additional wire extending along said output transmission line to feed supply voltage to said active four terminal network.
Claim 12
Dependent Claim
33 words
An antenna as defined in claim 1, wherein said output transmission line includes a cable and further comprising means for feeding direct current supply voltage to said four terminal network via said cable.
Claim 13
Dependent Claim
59 words
An antenna as defined in claim 1, further comprising a grounding band extending at a close distance along said first section of the output transmission line and being connected at one end thereof with said one of said output terminals of the four terminal network and its other end being conductively coupled for high frequencies with said ground contact.
Claim 14
Dependent Claim
51 words
An antenna as defined in claim 1, further comprising an additional antenna conductor connected to an input terminal of an additional four terminal network to receive at a different frequency range than said first antenna conductor, the output terminals of said four terminal networks being coupled to said output transmission line.
Claim 15
Dependent Claim
81 words
An antenna as defined in claim 1, further comprising an additional antenna conductor connected to an input terminal of an additional four terminal network, an additional output transmission line and an antenna diversity switching unit, output terminals of said additional four terminal network being coupled to said additional output transmission line, said antenna conductors being designed for the reception of the same frequency band and said output transmission lines being connected via an antenna connector means to said diversity switching unit.
Claim 16
Dependent Claim
277 words
An active reception antenna arranged on a non-conductive flat supporting piece (1, 12) set in a conductive body (2) of a motor vehicle, comprising: an active four terminal network (5) having two input terminals (6a, 6b) and two output terminals (7a, 7b); a first vertically arranged elongated antenna conductor (3a) secured on the supporting piece; an output transmission line (8) having a first section (14) of well defined layout which is connected to said output terminals (7a, 7b) and forms a second antenna conductor (14) with a length (20), introducing a non-negligible, however defined, impedance for high frequencies between one of said output terminals (7a, 7b) and a ground contact (10), said input terminals (6a, 6b) being connected to said first elongated antenna conductor (3a) and to said second antenna conductor (14), providing an appropriate source impedance at the input of the active four terminal network, said output transmission line (8) having a second section (15) which is connected to said ground contact (10) and also to an inner connector (11a) of said first section (14) of said output transmission line (8), said inner connector (11a) being connected with the other of said output terminals (7a), said one of said output terminals (7b) being connected to said ground contact (10), said flat supporting piece being a window pane surrounded by a broad plastic frame, said active four terminal network being secured to the pane in proximity to an edge of the pane, wherein said first section of the output transmission line has a first part extending from said output terminals parallel to said edge of the pane, and a second part directed toward said ground contact means.
Claim 17
Dependent Claim
277 words
An active reception antenna arranged on a non-conductive flat supporting piece (1, 12) set in a conductive body (2) of a motor vehicle, comprising: an active four terminal network (5) having two input terminals (6a, 6b) and two output terminals (7a, 7b); a first vertically arranged elongated antenna conductor (3a) secured on the supporting piece; an output transmission line (8) having a first section (14) of well defined layout which is connected to said output terminals (7a, 7b) and forms a second antenna conductor (14) with a length (20), introducing a non-negligible, however defined, impedance for high frequencies between one of said output terminals (7a, 7b) and a ground contact (10), said input terminals (6a, 6b) being connected to said first elongated antenna conductor (3a) and to said second antenna conductor (14), providing an appropriate source impedance at the input of the active four terminal network, said output transmission line (8) having a second section (15) which is connected to said ground contact (10) and also to an inner connector (11a) of said first section (14) of said output transmission line (8), said inner connector (11a) being connected with the other of said output terminals (7a), said one of said output terminals (7b) being connected to said ground contact (10), said flat supporting piece being a window pane surrounded by a broad plastic frame, said active four terminal network being secured to the pane in proximity to an edge of the pane, wherein said first section of the output transmission line has a first part extending from said output terminals parallel to said edge of the pane, and a second part directed toward said ground contact means.
Claim 18
Dependent Claim
31 words
An antenna as defined in claim 15, wherein said first part of said first section of the output transmission line is in the form of flat conductors printed on said pane.
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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) | 1997-02-21 | 1997-08-23 | 1998-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-21 | 2001-08-23 | 2002-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-21 | 2005-08-23 | 2006-02-22 | $7700.00 | Window Closed / Lapsed |