Glass antenna

Abstract

Abstract PURPOSE:To remove projections on a surface of a window pane and to improve visuality by forming an antenna pattern on the pane surface constituting the pattern of an antenna element and lead wires specified at their items and connecting these lead wires to parallel feeders. CONSTITUTION:The antenna pattern 30 for a half-wavelength non-grounded antenna for transmitting/receiving a UHF band is formed together with the lead wires on the window pane 10 and connected to the parallel feeders 44 on the end part of the pane 10. The pattern 30 consists of the half-wavelength antenna element 32 arranged in the vertical direction and a leading part 34 extended up to the edge of the pane 10. The pattern 30 is extremely thinly fixed on the surface of the pane 10 by vapor deposition or the like. The lead wires 40, 42 are connected to the parallel feeders 44. In the leading part 34, the center interval S between the lead wires 40, 42 and the wire width W1 are formed with the prescribed size so that impedance matching with the feeder side and VSWR are optimized. In addition, a coaxial feeder can be also used and in this case, the center line width of the lead wire, the inner width of an external lead wire and the width of the external lead wire are set up to the prescribed size.

Inventors

• 👤 Haruhiko Toriyama
• 👤 晴彦 鳥山

Bibliographic Details