Design of a Triple-Mode Wideband Antenna Using Theory of Characteristic Modes
2018
The theory of characteristic modes (TCM)is utilized to design a triple-mode wideband antenna in this paper. The antenna consists of two dipole resonators and one loop resonator. First of all, a full characteristic mode analysis of the antenna structure was carried out. It was observed that the first three characteristic modes (CMs)of the antenna can be used to design a wideband antenna. Then, a proper feeding network was designed to excite those selected CMs. After optimizing the antenna's geometric parameters, a wide impedance bandwidth of 56.9% with | S 11 |<-10 dB can be obtained.
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