Wave transmission lines and networks – Coupling networks – Nonreciprocal gyromagnetic type
Patent
1996-02-15
1999-04-06
Pascal, Robert
Wave transmission lines and networks
Coupling networks
Nonreciprocal gyromagnetic type
333 32, 333 24C, 333256, 333261, 455 41, H04B 360, H01P 106
Patent
active
058924116
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a device for transmitting data between a sending module and a receiving module which are moveable relative to one another. From DE-A1-40 06 770 a communication device of this kind for transmitting data between a sending platform and a receiving platform, which are movable relative to one another, is known. On the stationary sending platform a sending antenna is provided which has two identical lengths of a strip line arranged in a circle. Furthermore, a receiving antenna is provided on the receiving platform which is arranged at a predetermined distance from the sending antenna and which is movable about it.
In this communication system a data transmittal is thus only possible from the sending antenna to the receiving antenna and thus only in one direction. Furthermore, due to the circular arrangement of the sending antenna the field of application is further limited. However, it is a particular disadvantage that only a small portion of the transmittal power emitted by the sending antenna reaches the receiving antenna and that due to transmission in a circle about the sending antenna a perturbing radiation must be accepted with which machinery and devices arranged in the vicinity are unfavorably affected.
It is therefore an object of the invention to provide a device for transmitting data of the aforementioned kind with which data can be transmitted not only in both directions alternatingly, but which also allows for any desired arrangement of the sending, respectively, receiving antenna as a track conductor so that extremely versatile application possibilities are provided. Furthermore, the device should be simple in its construction, and thus economical to produce, and not susceptible to soiling. Especially, a broad-band coupling with minimal damping between the sender and the receiver should be possible, and this substantially without loss of radiation.
SUMMARY OF THE INVENTION
According to the invention this is achieved in a device for transmitting data such that one of the modules is an electric conductor with a defined surge impedance and the other module is a probe that is coupled in a contact-free manner thereto and that both modules are connected to sending and receiving electronic circuits.
The data transmission device according to the present invention is thus primarily characterized by: wherein one of the first and second modules functions as a sending module and the other functions as a receiving module for transmitting data between the first and second modules; defined surge impedance and the other of the first and second modules being a coupling probe for coupling contact-free with the electrical line; module; and module.
Preferably, the electrical line is a stationary track line and the coupling probe is moveable along the track line in a longitudinal direction of the track line.
Advantageously, the first and the second modules function alternatingly as a receiving module and a sending module.
Expediently, the electrical line is a stripline comprised of an electrically conducting base member, an insulating layer, and at least one electrical lead fastened to the insulating layer.
The stripline may be a plane plate.
In a preferred embodiment of the present invention, the coupling probe is at least one moveable coupling plate covering at least partly the electrical lead of the electrical line, the coupling plate being a plane plate or a curved plate.
In yet another embodiment, the electrical lead of the stripline is comprised of two substantially semi-circular sections of identical length positioned mirror-symmetrical to one another.
Preferably, free ends of the semi-circular sections are spaced at a distance from one another and the coupling plate has a functional length cooperating with the stripline which functional length is longer than the distance between the free ends of the semi-circular sections.
The stripline expediently comprises a plurality of the electrical leads arranged concentrically to one another.
The electrical lead ca
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patent: 5157393 (1992-10-01), Fox et al.
patent: 5432486 (1995-07-01), Wong
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Nagel Andreas
Schwan Ulrich
Pascal Robert
Schwan Ulrich
Summons Barbara
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