Motor vehicle with antenna window with improved radiation and reception characteristics
First Claim
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1. An automotive vehicle comprising:
- a vehicle body formed with a window opening framed by a metallic border;
an antenna window in said opening and secured to said body, said antenna window comprising;
an inner pane,an outer pane,a bonding layer between said inner pane and said outer pane, andan electrically conductive optically transparent solar control coating capable of reducing solar energy transmission in at least one portion of the solar energy spectrum,said solar control coating being set back from at least one edge of said window opening to define along said edge a coating-free strip-like slot region, said solar control coating running to at least one other edge of said antenna window and overlapping said metallic border at said at least one other edge and being high-frequency-coupled to said metallic border at said at least one other edge; and
means for electrically contacting said solar control coating and said one edge of said window opening adjacent to the coating free strip-like slot region whereby a slot antenna is formed.
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Abstract
A motor vehicle, especially a passenger vehicle, has a metallic body provided with a window opening receiving an antenna window. The antenna window has inner and outer panes bonded together by a bonding layer with an optically-transparent electrically-conductive solar central coating reducing transmission in at least a part of the solar energy range. At least one edge of the window is left free from the coating and in this region a slot antenna is formed. At least at one additional edge, the coating runs to that edge and is overlapped by the framing portion of the vehicle body and is coupled with a high-frequency coupling to the coating.
97 Citations
20 Claims
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1. An automotive vehicle comprising:
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a vehicle body formed with a window opening framed by a metallic border; an antenna window in said opening and secured to said body, said antenna window comprising; an inner pane, an outer pane, a bonding layer between said inner pane and said outer pane, and an electrically conductive optically transparent solar control coating capable of reducing solar energy transmission in at least one portion of the solar energy spectrum, said solar control coating being set back from at least one edge of said window opening to define along said edge a coating-free strip-like slot region, said solar control coating running to at least one other edge of said antenna window and overlapping said metallic border at said at least one other edge and being high-frequency-coupled to said metallic border at said at least one other edge; and means for electrically contacting said solar control coating and said one edge of said window opening adjacent to the coating free strip-like slot region whereby a slot antenna is formed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification