Electricity: conductors and insulators – Conduits – cables or conductors – Insulated
Patent
1998-09-03
2000-12-19
Kincaid, Kristine
Electricity: conductors and insulators
Conduits, cables or conductors
Insulated
174117FF, H01B 1102
Patent
active
061629936
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention is directed to a signal conductor for high-frequency signals for connection with at least three slip rings of a slip ring body.
In technical respects relating to high frequency, it is very problematic to connect a plurality of coaxial cables with the slip rings of a slip ring body. This is due to the fact that the shielding must be carefully removed from long portions of the coaxial cables so that both the inner conductor and shielding can be contacted with the slip rings. In view of the fact that the coaxial cables usually have a large diameter, the quantity of coaxial cables that can be accommodated is also necessarily limited. In addition, the effort is made in practice to keep the diameter of the slip rings as small as possible because as the diameter increases, the diameter of the housing overall increases exponentially.
2. Description of the Related Art
The separation of the shielding of a coaxial cable from the dielectric always produces a point of discontinuity and, as a result, reflections and interference signals. A discontinuous point increases the via net loss or transmission loss, having a very negative effect on the quality of signal transmission.
A further characteristic of known high-frequency slip ring bodies is the complicated bonding or contacting. For this reason, they were produced only as composite bodies, that is, the slip rings were embedded along with the coaxial cables in casting resin. However, casting resins of this type have very high dielectric values with disadvantageous consequences in terms of the geometric dimensions of the slip ring bodies. These dimensions were simply too large.
SUMMARY OF THE INVENTION
Proceeding from the prior art, the object of the invention is to provide a signal conductor for high-frequency signals for connection with the slip rings of a slip ring body, which signal conductor is not only constructed in a simple manner requiring a small installation space, but in which the stripping of insulation is dispensed with and solder joints between thin wires are no longer required.
In accordance with the present invention, the signal conductor for high-frequency signals for connection with at least three slip rings of a slip ring body is primarily characterized in that it has at least one electrically conducting signal path spaced at a distance laterally between two electrically conducting ground paths, that the signal path and the ground paths are arranged between two carrier layers having a suitable dielectricity, that a first shield is provided on the side of a carrier layer remote of the signal path and the ground paths, that plastic sheeting having connection lugs is arranged on the side of the other carrier layer remote of the signal path and the ground paths, that a second shield having a cutout in the region of the connecting lugs is provided on the side of the plastic sheeting remote of the signal path and the ground paths, that electrically contacting contact strips on the sides of the connection lugs remote of the signal path and the ground paths are connected with the signal path and the ground paths.
The basic construction type according to the invention provides an electrically conducting signal path between two electrically conducting ground signal path and the ground paths. The paths are preferably made of copper. In order to achieve the desired impedance, a spacing is provided between the signal path and the ground paths arranged adjacent and parallel thereto, wherein this spacing depends on the dielectric. Consequently, the geometric dimensions of the signal conductor are also determined by the dielectric. However, it is no longer a problem to provide a plurality of signal paths and ground paths adjacent to one another and this depends only on the available space within a slip ring body, wherein, however, every signal path must always lie between two ground paths.
Depending on the quantity of signal path and the ground paths, these signal path and the ground paths are n
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Kincaid Kristine
Kueffner Friedrich
Mayo III William H.
Stemmann-Technik GmbH
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