Compact Ultra-Wideband Bandpass Filter Implemented With Stepped Impedance Resonators And T-shaped Line

摘要：

A compact ultra-wideband (UWB) bandpass filter (BPF) is implemented with stepped impedance resonators (SIR) and T-shaped line. Fractional bandwidth (FBW) of the UWB BPF can be adjusted properly by changing the impedance ratio of the SIR. A transmission zero is created by the central open stub of the T-shaped line to suppress the second harmonic of the filter. In addition, the filter size is farther reduced by introducing T-shaped transmission line. The resulting UWB filter indicates a FBW of 108％ with three transmission zeros at 23, 11.1 and 13.4 GHz. Good agreement can be observed between simulated and measured responses.

关键词： Ultra-wideband (UWB) bandpass filter (BPF) stepped impedance resonator (SIR) fractional bandwidth (FBW) T-shaped line transmission zero

作者: Wenjie Feng Wenquan Che Quan Xu

作者单位: Department of Communication Engineering, Nanjing University of Science & Technology, China State Key Department of Communication Engineering, Nanjing University of Science & Technology, China State Key Laboratory of Millimeter Waves (Hong Kong), City University of Hong Kong, Hong Kong, China

会议类型: 国际会议

会议名称: 2010 International Conference on Microwave and Millimeter Wave Technology(2010国际微波与毫米波技术会议 ICMMT2010)

会议地点: 成都

会议语种:英文

页码: 44-47

在线出版日期: 2010-05-08（万方平台首次上网日期，不代表论文的发表时间）