提出了一种基于圆环缝隙结构的双频宽带天线.内外环缝间对称分布的四个矩形切口确保能量由外到内传递,内圆环中H形缝隙的引入使低频段带宽提高了1倍.仿真结果显示,该天线的- 10 dB阻抗带宽分别为(1.80～3.29)GHz和(4.83 ～6.82) GHz；天线的相对带宽分别达到了58.5％和34.2％；覆盖了无线局域网(WLAN)的所有三个频段和宽带互通微波接入(WiMAX)的2.5 GHz和5.25 GHz两个频段.%A dual-band broadband antenna based on ring slot structure is presented. Four notches are placed between the ring slots to guarantee that the energy flows into the inner ring slot. Through adding H-shaped slot can double the antenna bandwidth at lower frequency. The simulated results demonstrate that the -10 dB impedance bandwidthsof the antenna are( 1.80 ~3. 29)GHz and (4.83 ~6.82)GHz, and the relative bandwidths are 58. 5% and 34.2% , espectively, which can meet the requirement of WLAN and WiMAX (2.5 GHz and 5.25 GHz bands).
展开▼
