| 摘要: |
| 共形天线因其低剖面特性被广泛应用于现代飞行器中，垂直极化天线也是现代通信系统中最为简单经济的天线形式。基于目前天线设计中少有通过极化合成实现垂直极化特性的方法，提出一种与V形尾翼共形且具有垂直极化特性的合成天线，给出了以对称振子为合成单元的闭环解析公式，该公式可应用于任何角度、任何距离、任何激励的天线组合形式。通过HFSS仿真和试验测试，验证了V尾共形合成天线特性。天线的工作频段可覆盖0.93~1.06 GHz；在天线单元与V尾对称轴为45°的条件下，垂直极化增益达到3.3 dB。该天线通过V尾共形、极化合成的方式实现了低剖面、垂直极化特性，在不影响飞行器隐身及气动性能的同时实现了飞行器通信。 |
| 关键词: V形尾翼 垂直极化 共形天线 极化合成天线 |
| DOI： |
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| 基金项目: |
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| A Vertically Polarized Synthetic Antenna Conforming to V-shaped Tail of an Aircraft |
| SU Yue,XIE Yongjun,ZHANG Chungang,DAI Legen |
| (School of Electronics and Information Engineering,Beihang University,Beijing 100191,China) |
| Abstract: |
| Conformal antennas are widely used in modern aircrafts due to their low profile characteristics.Vertically polarized antennas are also the simplest and most economical form of antennas in modern communication systems.For the fact that there are few methods to realize vertical polarization by polarization synthesis in the current antenna design,a synthetic antenna with vertical polarization characteristics which is conformal with the V-shaped tail fin is proposed.The closed-loop analytical formula using a dipole as the synthesis unit is given,which can be applied to any combination of antennas with any angle,any distance and any excitation.Through the HFSS simulation and experimental tests,the characteristics of the synthetic antenna conforming to the V-shaped tail are verified.The working frequency band of the antenna can cover 0.93 GHz to 1.06 GHz.Under the condition that the angle between the antenna unit and the symmetry axis of the V-shaped tail is 45°,the vertical polarization gain reaches 3.3 dB.The antenna achieves low profile and vertical polarization characteristics by conforming with the V-shaped tail and polarization synthesis,and realizes aircraft communication without affecting the stealth and aerodynamic performance of the aircraft. |
| Key words: V-shaped tail vertical polarization conformal antenna polarization synthetic antenna |
