High-efficiency broadband slotted waveguide array antenna
High-efficiency broadband slotted waveguide array antenna
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DOI：
10.1049/iet-map.2016.0682
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发表时间：
2017-05
影响因子：
1.7
通讯作者：
Yogesh Tyagi;Pratik Mevada;Soumyabrata Chakrabarty;R. Jyoti
中科院分区：
文献类型：
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作者：
Yogesh Tyagi;Pratik Mevada;Soumyabrata Chakrabarty;R. Jyoti
本研究描述一种新型X波段高效率宽带开槽波导阵列天线的设计与研制。SWA的宽带特性已经通过使用差分馈电机制来实现，该差分馈电机制通过创建虚拟短路将大谐振SWA分叉成宽带子阵列。这种类型的宽带SWA的性能也与传统设计的边缘馈电SWA和耦合缝隙馈电SWA进行了比较。与传统的SWA设计相比，所提出的宽带SWA具有高效率、高功率处理能力和低制造公差。介绍了差动进给十单元直线型慢波放大器的设计和样机研制。所开发的原型阵列天线显示测量回波损耗（RL）性能优于17 dB，在7.6%的带宽上具有90.2%的天线效率。在9.65 GHz的实现增益为16.32 dBi的测量和建议的天线也显示出显着的改善增益平坦度。将10单元线性宽带SWA推广到2 × 10平面宽带SWA，并介绍了样机的研制和性能。
This study describes design and development of a novel X-band high-efficiency broadband slotted waveguide array (SWA) antenna. Broadband nature of SWA has been achieved using differential feeding mechanism which bifurcates large resonating SWA into wideband sub-arrays by creating virtual short. The performance of such type of broadband SWA is also compared with conventionally designed edge fed SWA and coupling slot fed SWA. The proposed broadband SWA features high efficiency, high power handling capacity and low fabrication tolerances as compared with conventional SWA designs. The design and prototype development of ten-elements linear SWA with differential feeding mechanism is presented. The developed prototype array antenna demonstrates measured return loss (RL) performance better than 17 dB with 90.2% antenna efficiency over 7.6% bandwidth. The realised gain of 16.32 dBi at 9.65 GHz is measured and the proposed antenna also shows significant improvement in gain flatness. Ten elements linear broadband SWA has also been extended to 2 × 10 planar broadband SWA and its prototype development and characterisation has also been presented.