A novel elliptically slotted antenna (ESA), with two notched bands for Ultrawideband (UWB) applications, is presented. The ESA comprises of an elliptically slotted radiator with a beveled defected ground structure (DGS) for achieving UWB bandwidth ranging from 3.42 to 11.79 GHz (110%) for VSWR< 2. Two rejected bands at WLAN (5.02–5.97 GHz) and down link of X- band (7.23–7.72 GHz) applications are obtained by etching S-shaped slot in the microstrip feed line and an asymmetrical C- shaped parasitic stub above the DGS, respectively. The ESA is printed on FR-4 substrate with a compact size of 24 × 28 $\text{m}{\text{m}}^2$and with a stable gain fluctuation from 2 to 4.08 dBi. A good matching, achieved in-between tested and simulated results, makes ESA to be a suitable candidate for WLAN/X-band-notched UWB applications.

介绍了一种新型椭圆槽天线 (ESA)，具有两个用于超宽带 (UWB) 应用的陷波带。ESA 包括一个带斜面缺陷接地结构 (DGS) 的椭圆槽辐射器，用于在 VSWR< 2 的情况下实现 3.42 至 11.79 GHz (110%) 的 UWB 带宽。WLAN (5.02–5.97 GHz) 和下行链路上的两个抑制频段X 波段 (7.23–7.72 GHz) 应用分别通过蚀刻微带馈线中的 S 形槽和 DGS 上方的非对称 C 形寄生短截线获得。ESA 印刷在 FR-4 基板上，尺寸紧凑，为 24 × 28 $\text{米}{\text{米}}^{\mathrm{2个}}$并具有从 2 到 4.08 dBi 的稳定增益波动。测试结果和模拟结果之间的良好匹配使 ESA 成为 WLAN/X 波段陷波 UWB 应用的合适候选者。