【作者】 丁浩； 赵伟； 王志刚；

【Author】 Ding Hao;Wang Zhigang;Zhao Wei;Fundamental Science on EHF Laboratory,University of Electronic Science and Technology of China;

【机构】 电子科技大学极高频复杂系统国防重点学科实验室；

【摘要】 本文介绍了基于新型结构的四次谐波混频器的设计。此混频器工作在射频35.6~36GHz,中频1.32GHz,采用四次谐波混频,即本振8.57~8.67GHz。其中射频滤波器采用新型的三线滤波器代替传统的平行耦合滤波器,在保证很好的插入损耗下大大减小了滤波器的尺寸。本振和中频端引入改进的滤波器模型提高变频损耗。通过ADS软件的整体优化,最终得到在34.8~36.5GHz的范围内变频损耗优于-8dB,最优点在35.6GHz,为-7.13dB。更多还原

【Abstract】 This paper introduces a fourth harmonic mixer based on new structures.The designed mixer works on RF frequency of 35.6~36GHz and IF frequency of 1.32 GH,resulting in LO frequency of 8.57~8.67 GHz since they are fourth harmonic mixed.In this design,a novel filter named Three-Line filter is used instead of conventional edge coupled filter.It can greatly reduce the size without sacrificing insertion loss.Also,improved LO filter and IF filter is adopted to improve conversion loss.By entire optimization of ADS,a mixer of conversion loss better than-8dB within the band of 34.8GHz~36.5GHz is achieved.The best point is at 35.6GHz with conversion loss of-7.13 dB.更多还原