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提出了一种设计毫米波环行器的新方式,以进一步缩小器件体积并维持良好性能。具体方案为:通过SIW使器件具有小体积和高功率;通过弧形SIW将传统的Y字型环行器变为准T字型环行器;通过渐变器将SIW过渡到50Ω的标准微带线上,该渐变器可以内嵌到SIW内使器件体积更小。8mm环行器采用高频层压板和圆柱铁氧体进行设计,并通过高频电磁场仿真软件(HFSS)进行验证,得到工作频带内插入损耗小于0.2dB,隔离度大于20dB,回波损耗大于25dB,驻波小于1.2的结果。按设计得到的产品,其性能测试结果和仿真结果基本吻合,但工作频率有所下降。
A new way to design a millimeter wave circulator is proposed to further reduce the size of the device and maintain good performance. The specific solution is to make the device have a small volume and high power through SIW, to change the traditional Y-shaped circulator into a quasi-T-shaped circulator through the arc-shaped SIW, and to pass the SIW to a 50-ohm standard microstrip line through the fader , The fader can be embedded in the SIW to make the device smaller. The 8mm circulator is designed with high-frequency laminates and cylindrical ferrite and verified by high-frequency electromagnetic field simulation software (HFSS), the insertion loss is less than 0.2dB, the isolation is greater than 20dB, the return loss is greater than 25dB, The result of standing wave less than 1.2. According to the design of the product, its performance test results and simulation results basically agree, but the operating frequency decreased.