ABSTRACT A wide-beam linear polarization antenna with circular patch, ring, microstrip line, and electromagnetically coupled patch is presented in this paper. This antenna was used in missile telemetry system. Circular patch is fed by a coaxial probe directly, and the regular patch is excited by the coupling energy. In order to broaden the antenna beamwidth, the ring and regular patch were added to change the distribution of electromagnetic field. Four microstrip lines were used to obtain a wide impedance-matching bandwidth. This antenna is simulated and optimized by using the full wave electromagnetic simulation technique. It can achieve an impedance bandwidth (S11<-10 dB) of 2.36–2.38 GHz. The simulated results showed a linear polarization radiation with a wide half-power beamwidth (>71.9°) and a high radiation gain (>6.2 dB) within the operational bandwidth. The proposed antenna is fabricated and measured. Measured results show that the proposed antenna achieves the expected radiation performance and validates the effectiveness of the dual polarized antenna design. The wide-beam antenna studied in this paper is suitable for missile telemetry system. The research results have laid a technical foundation for its practical engineering application.

中文翻译：

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航空器遥测系统宽波束分层印刷天线的研究

摘要 本文提出了一种具有圆形贴片、环形、微带线和电磁耦合贴片的宽波束线极化天线。该天线用于导弹遥测系统。圆形贴片由同轴探头直接馈电，规则贴片由耦合能量激发。为了拓宽天线波束宽度，增加了环形和规则贴片来改变电磁场的分布。四个微带线用于获得宽阻抗匹配带宽。该天线采用全波电磁仿真技术进行仿真优化。它可以实现 2.36–2.38 GHz 的阻抗带宽 (S11<-10 dB)。模拟结果显示线偏振辐射具有较宽的半功率波束宽度 (>71.9°) 和高辐射增益 (>6. 2 dB) 在操作带宽内。所提出的天线被制造和测量。测量结果表明，所提出的天线达到了预期的辐射性能，并验证了双极化天线设计的有效性。本文研究的宽波束天线适用于导弹遥测系统。研究成果为其实际工程应用奠定了技术基础。