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Antenna field for a motor vehicle disk

A technology of window glass and antenna area, applied in the direction of antenna, antenna parts, antenna support/installation device, etc., to achieve the effect of large frequency bandwidth and small frequency dependence

Inactive Publication Date: 2011-01-19
KATHREIN AUTOMOTIVE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the prior disclosure, the capacitance should be less than 40pF, because on the other hand, it is meaningless to increase the coupling capacitance beyond 40pF

Method used

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  • Antenna field for a motor vehicle disk
  • Antenna field for a motor vehicle disk
  • Antenna field for a motor vehicle disk

Examples

Experimental program
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Embodiment Construction

[0025] figure 1 A window glass 1 is shown in a simplified front view, such as a window glass of a car, in particular a rear window glass 1 ', which has an upper boundary (or limiting edge) 1a, a lower boundary in a simplified view (or bounding edge) 1b and a left border (or bounding edge) 1c and a right border (or bounding edge) 1d. In practice these limiting edges are not parallel to each other in pairs, but are curved, more likely to approach a trapezoidal shape or the like, since the window generally becomes wider from top to bottom. No restrictions are imposed in this regard with regard to the shape of the window pane, so that even any curved boundary lines are conceivable.

[0026] A heating field 7 is integrated in the window pane formed in this way, which includes a large number of conductors 9 extending in the window pane from the outside or from the inside, which are shown in the press figure 1 In the exemplary embodiment, it extends between a first bus bar 11 and a...

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PUM

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Abstract

The invention relates to an improved antenna field, characterized by the following features: at least one capacitance (19') is switched between one of the two bus bars (11a, 11b) and at least one center section (9c) of the heating wire (9a, 9b, 9c) formed between 20% and 80% of the total length of the heating wire (9; 9a, 9b, 9c), and / or at least one capacitance (19'') is switched between at least two center sections (9c, 9'c) of the heating wires (9; 9a, 9b, 9c, 9'a, 9'b, 9'c) formed between 20% and 80% of the total length of two heating wires (9; 9a, 9b, 9c; 9'a, 9'b, 9'c), and the at least one capacitance (19', 19'') is greater than 50 pF.

Description

technical field [0001] The invention relates to an antenna field for a vehicle window, in particular a vehicle rear window, according to the preamble of claim 1 . Background technique [0002] It is well known that heating conductors provided, for example, in the rear window of a passenger car can also be used as antenna fields. Usually, in a rectangular or trapezoidal rear window, a busbar is provided on the left and on the right, between which the individual heating wires run parallel to one another. Each of the two bus bars is connected to a pole of a car battery. [0003] Transversely extending secondary conductors can be arranged on the equipotential lines, which are substantially suitable for improving the reception quality of such a rear window antenna. Since the secondary lines run on the equipotential lines, it is essentially ensured that there is no cross-current flow between the heating wires here. [0004] Such a rear window heater serving as an antenna field ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/12
CPCH01Q1/1278H01Q1/12H01Q1/32
Inventor T·兰克斯A·伊尔桑克G·席尔迈尔B·佐兰
Owner KATHREIN AUTOMOTIVE GMBH