Annular microstrip antenna component and radial line antenna device

摘要

PURPOSE: To facilitate the impedance matching with simple configuration. ;CONSTITUTION: An annular radiation conductor plate 13 is provided onto a ground conductor plate 11 via a dielectric layer 12. An outer conductor 172 of a coaxial feeder 17 is connected to the ground conductor plate 11 and a center conductor 171 is connected to the radiation conductor plate 13 via a microstrip line 15. The microstrip line 15 is extended toward two points of the radiation conductor plate 13 from the feeding point 14 and an input impedance of the annular microstrip antenna element 10 when viewing the feeding point 14 is adjusted to take impedance matching with the coaxial feeder 17.;COPYRIGHT: (C)1996,JPO