UHF BROADBAND UHF SENSOR ANTENNA FOR PARTIAL DISCHARGE DETECTION

摘要

According to one aspect of the present application, provided is a UHF sensor antenna, which comprises: a spiral antenna having a plurality of arms; a superstrate disposed on an upper portion of the spiral antenna; a balun for impedance conversion of the spiral antenna; and a cavity bag adjusting a radiation pattern of the spiral antenna. Therefore, according to the present application, a broadband UHF sensor antenna having an ultra-broadband characteristic and being miniaturized can be provided. Further, according to the present application, the broadband UHF sensor antenna, in which the radiation pattern of the antenna has unidirectionality, can be provided.