Wideband folded mushroom zeroth-order resonance antenna

초록

In this study, a wideband folded mushroom zeroth-order resonance (ZOR) antenna is presented. To obtain a wide bandwidth, the frequency of the TM010 (lambda(0)/2) mode is down-shifted to the frequency of the ZOR mode by folding a mushroom structure without any additional structure. Thus, the folded mushroom antenna operates over two modes, resulting in a wide bandwidth. The antenna has a dimension of 0.365 lambda(0) x 0.247 lambda(0) x 0.182 lambda(0) at the centre frequency. Its 10 dB fractional bandwidth is measured as 68.3%. The maximum gains of 3.32 and 3.41 dBi are measured at the ZOR mode and the TM010 mode, respectively. Finally, the measured results show good agreements with the simulated results.

키워드