PURPOSE: To suppress the influence of electromagnetic disturbing waves from the external by shielding a primary radiator connected to a signal ground part with a metallic strip connected to a frame ground part.
CONSTITUTION: Parallel metallic plates 11 are attached to a radome 5. A parabolic reflection mirror 4 is connected to a frame ground enclosure 2 and is subjected to frame ground FG, and metallic plates 11 are connected to the reflection mirror 4 and are subjected to frame ground FG also. A primary radiator 3 is subjected to signal ground SG and is set to the same potential as a radio equipment body case 1 and is insulated from the frame ground FG part. Since the primary radiator subjected to signal ground SG is shielded by an outside peripheral metallic body subjected to frame ground FG, the influence of electromagnetic disturbing waves from the external is suppressed. The influence is suppressed similarly in case of an electromagnetic horn.
DOI YOSHIKAZU
TSUKAGOSHI KENJU
SAGI YASUO
