A Novel Bandstop Resonator in Waveguide and Its Application for Suppressing the Spurious Responses with New Advantages to Typical Resonators
In this paper a new structure for bandstop waveguide-type resonators is introduced.Because of the similarity between the shape of this resonator and the Greek letter φ,this resonator is named Φ-shaped resonator.These resonators are located in the cross section of the waveguide.The direction of the electromagnetic waves and the position of these resonators are studied to obtain a good excitation.Various resonances of these structures are determined.Moreover a circuit model is proposed and the parameters of this model are extracted.As a consequence an array of these resonators is used to design a bandstop filter.The results are simulated with CST Microwave Studio 2009 and a rejection level of almost 35 dB is achieved.Finally,these resonators are used as a solution for suppressing the spurious response of inductive post filters.In this case two methods are examined.In the first method an array of these resonators are cascaded with the total structure of the inductive post filter and in the second method these resonators are located in the spaces between the posts.The results verify the performance of these resonators for suppressing the spurious responses.
S.A.Hassani Gangaraj M.Tayarani
Department of Electrical Engineering,Iran University of Science and Technology,Iran
国际会议
Progress in Electromagnetics Research Symposium 2011(2011年电磁学研究新进展学术研讨会)
苏州
英文
533-537
2011-09-01（万方平台首次上网日期，不代表论文的发表时间）