Abstract

An ultra-wideband (UWB) antenna with triple band- notched characteristics is presented in this paper. The triple-notched bands (5.15{5.35GHz and 5.725{5.825GHz for WLAN, 7.9{8.395GHz for X-band) are achieved by using only one novel composite resonator with multiple resonant characteristics. The resonator is placed on the back surface of the substrate and connected to the radiation patch through one via-hole. An equivalent circuit model is built for analyzing the band-notched characteristics. Moreover, the notched bands can be adjusted independently, and the resonator structure is very compact.

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