In this research, a compact dual band-notched (DBN) super-wideband (SWB) coplanar waveguide-fed antenna with high bandwidth (BW) dimension ratio of 7427.4 has been presented. The proposed antenna covers a very wide frequency range from 2.8 to 40 GHz (BW ratio of 14.28:1) with |S11|<−10 dB. The overall antenna size is 20 × 14 × 1.6 mm3 which consists of an FR4 substrate with a dielectric constant of 4.4, a shovel-shaped radiating patch and the symmetric stair-shaped ground plane. The DBN characteristics are achieved by employing a pair of C-shaped and circular slots on its shovel-shaped radiating patch to reject the interferences caused by two WiMAX (3.7–4.7 GHz) and WLAN (5.7–6.4 GHz) bands. The notched frequency bands can be controlled by changing the radii of slots. The SWB property of the antenna is obtained by using a symmetric stair-shaped ground plane and also a shovel-shaped radiating patch. The measured results of the fabricated prototype in frequency-and time-domain are also presented and compared with the numerical results. The results indicate that the antenna has good performance over the entire operating BW (173.8%) which makes it very potential candidate for modern SWB applications.

中文翻译：

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一种具有高带宽尺寸比的紧凑型双带陷SWB天线

在这项研究中，提出了一种紧凑型双带陷 (DBN) 超宽带 (SWB) 共面波导馈电天线，其高带宽 (BW) 尺寸比为 7427.4。建议的天线覆盖从 2.8 到 40 GHz（带宽比为 14.28:1）的非常宽的频率范围，具有 |小号11|<-10 分贝。整体天线尺寸为 20 × 14 × 1.6 mm3它由介电常数为 4.4 的 FR4 基板、铲形辐射贴片和对称的阶梯形接地平面组成。DBN 特性是通过在其铲形辐射贴片上采用一对 C 形和圆形槽来实现的，以抑制由两个 WiMAX（3.7-4.7 GHz）和 WLAN（5.7-6.4 GHz）频段引起的干扰。可以通过改变槽的半径来控制陷波频带。天线的SWB特性是通过使用对称的阶梯形地平面和铲形辐射贴片获得的。还给出了制造原型在频域和时域的测量结果，并与数值结果进行了比较。结果表明，该天线在整个工作带宽（173.