Communications: radio wave antennas – Antennas – With vehicle
Patent
1992-06-16
1994-02-22
Mintel, William
Communications: radio wave antennas
Antennas
With vehicle
343701, H01Q 1320, H01Q 23000
Patent
active
052891976
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).
REFERENCES:
patent: 3622890 (1971-11-01), Fujimoto et al.
patent: 3866232 (1975-02-01), Weigt
patent: 4746925 (1988-05-01), Toriyama
patent: 5019830 (1991-05-01), Harada
patent: 5138330 (1992-08-01), Lindenmeier et al.
Johnson et al., Antenna Engineering Handbook, 2nd Ed., New York, McGrawl-Hill, 1984, Chapter 43, Impedance Matching and Broadbanding David F. Bowman, pp. 43-1 to 43-32.
Flachenecker,deceased Gerhard
Hopf Jochen
Lindenmeier Heinz
Reiter Leopold
Brown Peter Toby
Hans Kolbe & Co. Nachrichtenubertragungstechnik
Mintel William
Striker Michael J.
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