Zarifi Davood, Farahbakhsh Ali, Mrozowski Michal
Department of Microwave and Antenna Engineering, Faculty of Electronics, Telecommunications, and Informatics, Gdańsk University of Technology, Gdańsk, 80-233, Poland.
School of Electrical and Computer Engineering, University of Kashan, Kashan, Iran.
Sci Rep. 2025 Jan 28;15(1):3593. doi: 10.1038/s41598-025-87956-y.
An ultrawideband slant-polarized monopulse feed is designed and fabricated for microwave applications. The proposed configuration features four end-launched diagonal horns allowing for the production of sum and difference channels in two principal planes. The key advantage of this proposed monopulse antenna over traditional monopulse feeds is its ability to combine the benefits of ultrawideband performance with slant polarization while maintaining acceptable side lobe level. The design is validated by fabricating a prototype of the proposed feed antenna. Measurement results are in a reasonable agreement with the simulations. The measured ratio bandwidth is 2.5:1 from 8 to 18 GHz with a peak gain of 17.92 dBi. The null depth in the difference patterns is approximately - 32 dB. Given these characteristics, the proposed monopulse feed is a suitable choice for use in commercial tracking radar systems that require wide bandwidth and slant polarization, such as those found in satellite-based applications.
设计并制作了一种用于微波应用的超宽带斜极化单脉冲馈源。所提出的结构具有四个端射对角喇叭，能够在两个主平面上产生和信道与差信道。与传统单脉冲馈源相比，这种所提出的单脉冲天线的关键优势在于，它能够在保持可接受旁瓣电平的同时，将超宽带性能与斜极化的优点结合起来。通过制作所提出的馈源天线原型对该设计进行了验证。测量结果与仿真结果基本吻合。实测的相对带宽为2.5:1，频率范围为8至18GHz，峰值增益为17.92dBi。差方向图中的零深约为-32dB。鉴于这些特性，所提出的单脉冲馈源是用于需要宽带宽和斜极化的商业跟踪雷达系统（如基于卫星的应用中的那些系统）的合适选择。
