【作者】 杨航； 王翔； 李黄炎； 司马博羽； 宗志园；

【Author】 YANG Hang;WANG Xiang;LI Huangyan;SIMA Boyu;ZONG Zhiyuan;Key Laboratory of Near-Range RF Sensing ICs & Microsystems,Ministry of Education,School of Electronic and Optical Engineering,Nanjing University of Science and Technology;

【机构】 南京理工大学电子工程与光电技术学院,近程射频感知芯片与微系统教育部重点实验室；

【摘要】 文中提出了一种基于外部均衡原理的W波段片上集成波导的线性相位滤波网络。通过外部均衡理论方法利用单端口反射式开口谐振环(SRR)的工作特性来均衡待相位校准的滤波器。将开口谐振环的反射群时延特性与待校准滤波器的特性相结合,可以产生具有平坦群延迟的线性相位响应。通过单端口反射SRR和3dB耦合器补偿了滤波网络的非线性的相位特性,实现了精确的校准和调节。最后仿真结果成功地验证了所提出的方法,实验结果表明,所设计的线性相位滤波网络在65%的通带内,群时延在0.276ns～0.280ns内波动,波动范围仅为4ps。更多还原

【Abstract】 This paper proposes a W-band on-chip integrated waveguide-based linear-phase filtering network based on the external equalization principle.The external equalization theory method is employed to utilize the operational characteristics of a single-port reflective split-ring resonator(SRR) to equalize the phase response of the target filter requiring calibration.By combining the reflective group delay properties of the SRR with the characteristics of the filter to be calibrated,a linear-phase response with flattened group delay is achieved.The nonlinear phase characteristics of the filtering network are compensated through the single-port reflective SRR and a 3dB coupler,enabling precise calibration and adjustment.Finally,simulation results successfully validate the proposed method.Experimental results demonstrate that the designed linear-phase filtering network exhibits a group delay fluctuation of only 4 ps,ranging between 0.276 ns and 0.28 ns,across 65% of the passband.更多还原