| 摘要 |
The invention concerns a unit having a glidepath aerial (1) and a support organ (2) designed to be mounted on the front landing gear of an aircraft, with said landing gear forming an electrically conductive ground plane. According to the invention: this aerial (1) is mounted on the support organ (2) and is electrically insulated from this support organ (2) by insulating elements, the support organ (2) has a longitudinal dimension at least equal to around one quarter of the wavelength lambda at which the aerial functions, so that the distance separating this aerial (1) and the ground plane is greater than lambda/4, and the aerial (1) also has a transmission line (13, 15) designed to connect the aerial (1) to a receiver in the aircraft; this transmission line (13, 15) is surrounding by an electromagnetic shielding element (12) serving as a faradization screen for the transmission line (13, 15), and this element is designed to be electrically connected to the ground plane.
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