【作者】 苗潇； 姜旭； 王琦；

【Author】 Xiao Miao;Xu Jiang;Qi Wang;National Key Laboratory of Radar Detection and Sensing,Xidian Univ.;

【机构】 西安电子科技大学雷达探测感知全国重点实验室；

【摘要】 本文提出了一种差分双通带移相器的设计,利用非对称阶梯阻抗谐振器和短截线加载传输线谐振器两种谐振器产生了双通带的幅频响应,同时还可以通过对短截线加载传输线谐振器的调节实现两通带内的平坦相移。引入微带线缝隙线结构作为差分馈电端口,实现良好的共模抑制度。加工实际测试了其中的45°/130°移相器,移相器两个通带的差模插入损耗的最大值分别为1.1 dB和1.3 dB,共模抑制度大于57.8 dB/52.8 dB,实现了良好的共模抑制。在差模相位误差取90°±5°/128±3.6°条件下的相对工作带宽达到了33.6%/20.1%。更多还原

【Abstract】 This paper presents a design of a differential dual-passband phase shifter.It generates a dual-passband amplitude-frequency response by using two types of resonators:an asymmetric stepped impedance resonator and a short-section line-loaded transmission line resonator.Additionally,a flat phase shift within the two passbands can be achieved by adjusting the short-section line-loaded transmission line resonator.The microstrip line gap line structure is introduced as the differential feed port to achieve a good common-mode rejection degree.The 45°/130°phase shifters were actually tested during processing.The maximum values of the differential mode insertion losses of the two passbands of the phase shifters were 1.1 dB and 1.3 dB respectively,and the common-mode suppression was greater than 57.8 dB/52.8 dB,achieving good common-mode suppression.The relative operating bandwidth reached 33.6%/20.1% under the condition that the differential mode phase error was taken as 90°±5°/128±3.6°.更多还原