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本文设计了一种小型的具有双陷波特性的环形超宽带单极子天线。通过在圆环形辐射贴片上开C形缝隙,在反射板上开L型缝隙,实现了天线在WiMAX3.5 GHz和WLAN5.5 GHz通信频带内的陷波特性,天线的大小为24 mm×36 mm×1.6 mm。通过仿真可知,天线S11<-10 dB时,带宽范围为2.7-10.6 GHz,陷波范围为3.2-3.8 GHz和5.1-6 GHz,实现了天线小型化、超宽带以及陷波的特性,同时,天线具有良好的辐射特性、方向性和增益,能够满足实际需要。
In this paper, a small annular monopole antenna with dual notch characteristics is designed. The notch characteristic of the antenna in the communication band of WiMAX 3.5 GHz and WLAN 5.5 GHz is realized by opening a C-shaped slit in the annular radiating patch and opening the L-shaped slit in the reflecting plate. The size of the antenna is 24 mm × 36 mm × 1.6 mm. Simulation shows that the antenna S11 <-10 dB, the bandwidth range of 2.7-10.6 GHz, the notch range of 3.2-3.8 GHz and 5.1-6 GHz, to achieve the antenna miniaturization, ultra-wideband and notch characteristics, at the same time, Antenna has good radiation characteristics, directionality and gain, to meet the actual needs.