A novel tri-band bandpass filter design using open-loop dual-mode resonators
This paper presents a novel triple-band bandpass filter using dual-mode open-loop resonator.The dual-mode resonators excite non-degenerate modes by using open-loaded stub.The nature of the dual-mode resonator is investigated through the even-odd mode analysis.Results verify that the central frequency of the proposed filter are 1.8GHz,2.4GHz and 3.5GHz,the fractional bandwidth are 20.5%,9.58% and 4%,respectively.At the same time,there are several transmission zeros located at each passband and return losses are greater than 15dB.It provides the filter with improved selectivity and stopband suppression.A good agreement between simulation and measurement verifies the validity of this design methodology.
dual-mode bandpass filter triple-band open loop resonator
Haiwen Liu Jiuhuai Lei Yulong Zhao Zhichong Zhang Xuehui Guan
College of Information Engineering, East China Jiaotong University, Nanchang, 330013, China
国内会议
重庆
英文
1143-1146
2013-05-01（万方平台首次上网日期，不代表论文的发表时间）