一种宽带高增益全向赋形测控天线的设计与实现

Design and realization of a wideband high gain omnidirectional shaped-beam TT＆C antenna

摘要:

为满足无人机地面测控站在单天线工作模式下实现遥控、遥测链路的远距离、大仰角跨度的全方位通信，设计了一种宽带高增益全向波束赋形阵列天线。天线采用宽带印刷偶极子单元组成4元共轴线阵，通过并联耦合馈电的方式在28.9%的相对工作带宽内增益大于6 dB，同时采用遗传优化算法在1.65 GHz~1.75 GHz频带内进行俯仰波束赋形，使得第一零点增益≥–8 dB，从而实现宽角域的链路覆盖。

Abstract:

To meet the requirements of UAV ground TT&C station to achieve far-distance and large-elevation span omnidirectional communication with the single-antenna operating mode, a wideband high-gain omnidirectional beamforming array antenna is designed. The antenna adopts four broadband printed dipole units to form a coaxial array, by making use of parallel and coupling feeding method, the gain of the antenna is larger than 6 dB within 28.9% of the relative working bandwidth. At the same time, the genetic optimization algorithm is used for the beamforming of elevation plane in 1.65 GHz~1.75 GHz, realizing the first null no less than –8 dB, which achieving the link’s wide-angle coverage.