This work presents a new and efficient approach for enhancing the bandwidth and reducing the E-plane cross-polarization (X-pol) of an epsilon negative transmission line (ENG-TL) antenna with reduced size for working in 2.4 GHz Industrial, Scientific and Medical (ISM) band. The antenna consists of ENG-TL on which a curved meander line inductor is loaded for the generation of zeroth-order resonance mode. Subsequently, a miniaturized and low profile (0.06 λ₀ × 0.06 λ₀ × 0.013 λ₀ at 2.44 GHz) circular-complementary split-ring resonator (C-CSRR) based mushroom meta-resonator is stacked over the ENG-TL antenna enhances the bandwidth twice without increasing any additional area. The proposed antenna provides a radiating element size of 0.17λ₀ × 0.15λ₀ excluding the feedline and total antenna dimension including ground plane is 0.17λ₀ × 0.20λ₀ × 0.025λ₀ at 2.45 GHz. The measured results shows an enhanced impedance bandwidth (IBW) of 7.40%, an acceptable gain of 2.8 dBi, and X-pol value better than 35 dB is obtained for the E-plane. The antenna compactness, extended IBW, low X-pol levels, improved gain, high gain-to-area ratio, and acceptable radiation efficiency indicates that the proposed antenna is appropriate for working in 2.4 GHz (2.4–2.484 GHz) ISM band.

这项工作提出了一种新的有效方法，可提高带宽并减小具有减小尺寸的ε负传输线（ENG-TL）天线的E平面交叉极化（X-pol），以在2.4 GHz工业，科学和工业领域中工作。医疗（ISM）频段。天线由ENG-TL组成，在该ENG-TL上装有弯曲的曲折线电感器，以生成零阶谐振模式。随后，小型化且低轮廓（0.06λ ₀  ×0.06λ ₀  ×0.013λ ₀在2.44千兆赫）的圆形互补开口环谐振器基于（C-CSRR）蘑菇元谐振器被堆叠在ENG-TL天线增强了带宽增加了两倍，而没有增加任何其他区域。所提出的天线提供的0.17λ的辐射元件尺寸₀ ×0.15λ ₀不含馈线并且包括接地平面总天线尺寸是0.17λ ₀  ×0.20λ ₀  ×0.025λ ₀在2.45GHz。测量结果表明，对于E平面，阻抗带宽（IBW）增强了7.40％，可接受增益为2.8 dBi，并且X-pol值优于35 dB。天线的紧凑性，扩展的IBW，低的X-pol电平，改善的增益，高的增益/面积比以及可接受的辐射效率表明，所建议的天线适合在2.4 GHz（2.4–2.484 GHz）ISM频段上工作。