CAJ | 학술논문

设计了一种16×8脊波导缝隙阵列天线,线阵阵面分成两个子阵,馈电采用同轴馈电与耦合缝隙馈电结合的两级馈电方式,辐射缝隙分布为泰勒分布。天线设计采用近场诊断方法和阻抗过载技术进行优化。天线实物加工测试结果表明,天线在X频段驻波带宽(VSWR≤1.5)为7.3%,最低副瓣达到-25.8 dB,副瓣电平带宽(SLL≤-19 dB)为6.2%。与已有文献相比,该天线同时具备阻抗宽带特性和低副瓣宽带特性,工作频带内具有增益均大于16 dBi的高增益特性。
설계료일충16×8척파도봉극진렬천선,선진진면분성량개자진,궤전채용동축궤전여우합봉극궤전결합적량급궤전방식,복사봉극분포위태륵분포。천선설계채용근장진단방법화조항과재기술진행우화。천선실물가공측시결과표명,천선재X빈단주파대관(VSWR≤1.5)위7.3%,최저부판체도-25.8 dB,부판전평대관(SLL≤-19 dB)위6.2%。여이유문헌상비,해천선동시구비조항관대특성화저부판관대특성,공작빈대내구유증익균대우16 dBi적고증익특성。
An 8í16 slotted ridge waveguide antenna array is presented. The linear array is separated into two sub-arrays. The antenna is fed by a waveguide divider,which is combined by a coaxial connector and two coupling slots. All the radiation slots are distributed in Taylor pattern. The antenna array is optimized according to the near-field on slots aperture and impedance overload technology. The antenna entity is fab-ricated and measured. Measured results show that impedance bandwidth is 7. 3%(VSWR≤1. 5),and side-lobe bandwidth(SLL≤-19 dB) is 6. 2%,sidelobe is less than-25. 8 dB. The conclusion is drawn that the antenna possesses broadband characteristic of impedance as well as low sidelobe compared with those pres-ented in existing literatures. Besides,the gains are higher than 16 dBi within its operating frequency.