一种Ka波段宽带功率合成放大器的设计

随着电子对抗等宽带微波系统的日益发展,毫米波宽带功率放大器需求也越加强烈。近年来随着空间功率合成技术研究的深入开展,基于波导内的空间合成技术在合成效率、相对带宽和实用化方面均展现了良好的特性,受到了广泛的关注。介绍了一种新颖的小型化空间功率合成器,基于波导内空间合成技术,采用非均匀对极鳍线的等分过渡方式,对BJ320波导进行分层结构设计并实现了一种Ka全频段功率放大器,在32 mm×30 mm×24 mm总体积内实现了4路合成,显示出了良好的工作性能。

Design of a Ka-band Broadband Power Combining Amplifier

The waveguide-based spatial power-combining method has gained more and more attention due to the advantages of combining efficiency,relative bandwidth and fabrication practicability.In this paper,a novel broadband power amplifier designed by this method is presented.Based on the method of cutting waveguide into trays,the combiner also applied a novel unequal transition fin-line structure to reduce the outline size,which shows a promising prospect for broadband millimeter-wave power applications.