一种小型化便携式无人飞行器干扰天线

A compact portable unmanned aerial vehicle interference antenna

文中设计了一种小型化便携式无人飞行器干扰天线。整机由3个天线组成,分别工作于1575.42±1.023MHz、2.4~2.5GHz、5.6~5.8GHz频段。每个天线形式为微带准八木,有源振子为蝶形偶极子,共面波导的接地板作为反射振子。两个小天线印制在同一块介质基板上,与大天线正对平行。3个天线共口径垂直安装在金属板上。利用HFSS仿真和优化,并制作实物。测试结果表明,1575.42MHz的天线在1.57GHz到1.58GHz频段内反射系数小于-15dB,增益达到10.3dBi;2.45GHz的天线在2.4GHz到2.5GHz频段内反射系数小于-9.2dB,增益达到9dBi;5.7GHz的天线在5.6GHz到5.8GHz频段内反射系数小于-9.1dB,增益达到10dBi。

In this paper,a compact portable unmanned aerial vehicle interference antenna is designed out. It consists of three sub antennas which works on 1575.42±1.023 MHz,2.4~2.5 GHz,5.6~5.8 GHz respectively. The three sub antennas are microstrip quasi Yagi antennas of which the active element is bow-tie-dipole and the reflector is the ground of the CPW. Two small antennas are printed on the same substrate,which are placed on the metal plate parallel to the large antenna. The novel antenna is simulated and optimized by the EM simulation software Ansoft HFSS,then its practical object is fabricated and tested by instruments. Judging from the measured results the antenna which operates at 1575.42 MHz exhibits the reflection coefficient ｜S11｜〈-15 dB over the frequency band from 1.57 to 1.58 GHz,the gain of 10.3 dBi in the maximum radiation direction. The antenna which operates at 2.45 GHz exhibits the reflection coefficient ｜S11｜〈-9.2 dB over the frequency band from 2.4 to 2.5 GHz,the gain of 9 dBi in the maximum radiation direction. The antenna which operates at 5.7 GHz exhibits the reflection coefficient ｜S11｜〈-9.1 dB over the frequency band from 5.6 to 5.8 GHz,the gain of 10 dBi in the maximum radiation direction.