Design of absorptive bandstop waveguide filter without lumped-element

摘要：

　　This letter presents one absorptive bandstop waveguide filter utilizing two couplers.The proposed absorptive bandstop filer(ABSF)with four ports is achieved by combing two quadrature couplers with two conventional waveguide bandstop filters,unwanted energy within the stopband will be absorbed by absorptive port instead of reflecting to incident port.The theory is analyzed and a waveguide bandstop filter with a center frequency of 12.85GHz is demonstrated and measured,the maximal stopband rejection is 70 dB with an input return loss of 19 dB,which implies that most of input power is dissipated by the proposed ABSF.

关键词： waveguide filter reflection coefficient Riblet quadrature coupler absorptive bandstop filter

作者: Zheng Chen Liu He Dexin Qu Xingjian Zhong Kun Li

作者单位: College of Communications Engineering PLA university of Science & Technology Nanjing 210007,China

会议类型: 国际会议

会议名称: 2017 IEEE 3rd Information Technology and Mechatronics Engineering Conference(ITOEC2017)(2017 IEEE 第3届信息技术与机电一体化工程国际学术会议)

会议地点: 重庆

会议语种:英文

页码: 42-45

在线出版日期: 2017-10-03（万方平台首次上网日期，不代表论文的发表时间）