A broader impedance bandwidth and higher gain printed log‐periodic dipole array antenna fed by half‐mode substrate integrated waveguide (HMSIW) is proposed in this letter for ultra‐wideband (UWB) wireless communication applications. The bandwidth of the reference antenna (5.1‐11.4 GHz) is expanded by 1.3 GHz by introducing a new resonance frequency with additional patches. Moreover; gain is enhanced over full band by attaching metal plate to narrow beam and adding directors to attract energy radiated by dipoles. A simulation analysis of the improved antenna with broader bandwidth of 4.1 to 11.7 GHz and higher gain is presented, along with a design procedure and experimental results. Measurement results are consistent with simulation results, which verifies the feasibility of this technique.

中文翻译：

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一种新型的印刷对数周期偶极子阵列（PLPDA）天线，可扩展带宽并提高增益

由半模衬底集成波导（HMSIW）馈入的阻抗带宽更大，增益更高的印刷对数周期偶极子阵列天线在本信中提出，用于超宽带（UWB）无线通信应用。通过引入带有附加补丁的新谐振频率，参考天线的带宽（5.1-11.4 GHz）扩大了1.3 GHz。此外; 通过将金属板连接到窄光束并增加指向矢以吸收偶极子辐射的能量，可以在全频带上增强增益。对改进的天线进行了仿真分析，该天线具有4.1至11.7 GHz的更宽带宽和更高的增益，并给出了设计过程和实验结果。测量结果与仿真结果吻合，验证了该技术的可行性。