An n-shaped antenna with multimode for wideband application based on substrate integrated suspended line (SISL) platform is presented using characteristic mode analysis (CMA). By exciting three modes simultaneously, a wideband characteristic is achieved. The size of the proposed antenna is 0.74 λ₀ × 1.47 λ₀ × 0.11 λ₀ (where λ₀ is the free-space operating wavelength at the center frequency of 6.205 GHz). The antenna prototype is fabricated and measured. Experimental results show that in the band of 5.1–7.31 GHz, |S₁₁| <−10 dB, and the realized gain is from 5.2 to 9.8 dBi which can be used for WLAN and 5G wireless communication system.

中文翻译：

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基于特征模态分析的n型多模宽带基片集成悬空线天线

使用特征模式分析（CMA）提出了一种基于基板集成悬挂线（SISL）平台的宽带多模n形天线。通过同时激励三种模式，实现了宽带特性。建议天线的尺寸为 0.74 λ ₀  × 1.47 λ ₀ × 0.11 λ ₀（其中λ ₀是中心频率为 6.205 GHz 的自由空间工作波长）。天线原型被制造和测量。实验结果表明，在 5.1-7.31 GHz 频段，| 小号₁₁ | <−10 dB，实现增益5.2~9.8 dBi，可用于WLAN和5G无线通信系统。