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提出了一种改进后的新型平面短路结构宽带振子天线.与普通振子天线相比,该天线的平面短路结构更利于与载体表面共形.通过对天线主要结构参数分析优化,这种新型天线,凭借着其独特的外形结构和阻抗加载技术,相比于同类天线不但实现了天线尺寸的小型化,而且有更好的带宽和辐射特性.软件仿真表明,该天线在超短波甚高频(VHF,Very High Frequency)工作频段(30~88MHz)内满足电压驻波比小于3,垂直极化,水平全向辐射,辐射强度在工作频段优于-10 dB,辐射增益平坦度在2 dB以内.计算结果与实测结果吻合良好,该天线在超短波通信系统中有较好的应用前景.
An improved planar dipole antenna is proposed.Compared with common dipole antenna, the planar short circuit structure of the antenna is more conformal to the carrier surface.By analyzing and optimizing the main structure parameters of the antenna, the new antenna, With its unique structure and impedance loading technology, it not only achieves the miniaturization of the antenna size but also has better bandwidth and radiation characteristics compared with the similar antennas.The simulation results show that the antenna has good performance in ultra-shortwave VHF (VHF) Very High Frequency) In the working frequency band (30 ~ 88MHz), the voltage standing wave ratio is less than 3, vertical polarization and horizontal omnidirectional radiation, the radiation intensity is better than -10 dB in the working frequency band and the radiation gain flatness is within 2 dB. The result is in good agreement with the measured result. The antenna has good application prospect in the ultrashort wave communication system.