一种应用于无人机的水平全向共形环天线设计

Design of Wideband Conformal Horizontal Omnidirectional Loop Antenna for Unmanned Aerial Vehicle

设计一种应用于无人机的水平全向共形环天线,该天线由一个周期负载电容共形环贴片和一对作为阻抗变换器使用的平行微带线组成。为使天线在工作频段保持方向图全向性,对天线的贴片形状进行了优化,改变馈电方式,可在2. 330～3. 430GHz带宽为1. 1GHz的宽频带上正常工作。为验证天线实际性能,制作一个原型天线并进行测试。测试结果与仿真结果基本吻合,证明了天线具有良好的性能。

A conformal horizontal omnidirectional loop antenna for unmanned aerial vehicle application is presented. The proposed antenna consists of a conformal loop patch with periodical capacitive load and two parallel strip-lines as impedance transformers. In order to achieve a horizontally polarized omnidirectional pattern, the proposed conformal antenna is optimized by changing shape to the projection on the cylinder and altering the feed style. The antenna has a wide impedance band from 2.330 GHz to 3.430 GHz （about 1.1 GHz, 38.1%）. A prototype of the proposed antenna is fabricated and tested. Test results are in good agreement with simulation results.