基于二维Meniscus透镜的准光功率合成器(英文)

为了实现大功率容量和高效率的空间功率合成,将基于波导腔体的二维Meniscus透镜用于毫米波功率合成器的设计.对透镜中传输的主模(TE10波)的散射效应进行了分析,并且设计了匹配层减小透镜结构带来的反射.在30GHz频率上利用Rexolite介质的Meniscus透镜设计出了10路功率合成器,对不同结构的功率合成器和不同参数的透镜进行了研究,得到了最终的优化结果.CST-MMW的仿真结果表明该功率合成器在30GHz合成效率可以达到92.6%,并且其80%以上效率工作带宽可以覆盖整个Ka波段.

Quasi-Optical Power Combining Based on Two-dimensional Meniscus Lens

A waveguide-based two-dimensional meniscus thin lens is proposed for mm-wave quasi-optical power combining in a closed structure. The proposed waveguide lens is operated in TE10 mode, and the effects of the dispersion are discussed. A matching layer is included to improve the combining efficiency. A ten-way power combiner using Rexolite material is given as a designed example at 30 GHz. Simulations show that the designed meniscus lens can achieve a combining efficiency of 92.6% at the design frequency of 30 GHz, and cover the entire Ka-band with more than 80% efficiency.