【作者】 付明晔； 向乾尹； 冯全源；

【Author】 Mingye Fu;Qianyin Xiang;Quanyuan Feng;Southwest Jiaotong University;

【机构】 西南交通大学；

【摘要】 本文提出了一种低损耗大延时反射式可调延时滤波器。该可调延时滤波器采用改进型微带谐振器,其等效电容能够得到大幅增加,从而实现所需的大延时同时降低损耗。基于此谐振器,本文设计、仿真并制作了反射型可调延时滤波器。所制作的可调延时滤波器连接至一个环形器进行测量,其中心频率和延时均可调,最大延时达300 ns且此时电路损耗小30 dB。该结构亦可作为基本单元构建全通延时等复杂拓扑。更多还原

【Abstract】 A low loss tunable delay filter with large delay is presented in this paper. Modified microstrip resonators whose equivalent capacitance can be increased significantly are used in the tunable delay filter to enlarge delay and decrease loss. Based on the resonator, a reflection-type tunable delay filter is designed, simulated and fabricated. The fabricated delay filter is connected to a circulator for measurement. Both central frequency and delay can be tuned. The maximum delay can be 300 ns while the loss is lower than 30 dB. This tunable delay filter can also be used as a delay cell in complex allpass delay topologies.更多还原