西安电子科技大学学报（自然科学版）Issue(3)：38-42,96,6.DOI:10.3969/j.issn.1001-2400.2015.03.007
一种新型多模三通带滤波器
Design of a novel multiple-mode tri-band bandpass filter
摘要
Abstract
A compact tri-band microstrip filter based on an MMR(multiple mode resonator)is presented, which consists of an MMR and a pair of feedlines.Firstly,due to the symmetry of the structure,the even-odd-mode method is applied twice to analysis the resonant characteristics.All the six mode frequencies can be freely tuned by changing the lengths of loaded stubs,and all the four modes equivalent circuits are quarter-wavelength resonators,which largely minimize the size of the filter.Secondly,stub to stub coupling is introduced to split two modes and produce two new transmission zeros with the passband selectivity improved.Finally,a microstrip tri-band bandpass filter(BPF)operating at 1.5 GHz/2.4 GHz/3.5 GHz is designed,fabricated and measured.Measured results are in good agreement with the simulated ones.关键词
多模谐振器/三通带滤波器/枝节耦合/传输零点Key words
multi-mode resonators/tri-band bandpass filter/stub-stub coupling/transmission zeros分类
信息技术与安全科学引用本文复制引用
林磊,孙守家,吴边,梁昌洪..一种新型多模三通带滤波器[J].西安电子科技大学学报（自然科学版）,2015,(3):38-42,96,6.基金项目
国家高技术研究发展计划(863计划)资助项目(2012AA01A308) （863计划）
国家自然科学基金资助项目(61271017) （61271017）
