An UWB Bandpass Filter with Short-Circuited Multi-Mode Resonator via Inductive Coupling
In this paper, an ultra-wideband (UWB) bandpass filter based on short-circuited multi-mode resonator (MMR) is proposed and developed. The individual lengths of three cascaded sections in the MMR are set to about λg/4, λg/2 and λg/4, where λg is the guidedwavelength at the center frequency of the passband. The impedance ratio of the 1st and 3 rd sections to the 2nd section is appropriately studied, aiming to quasi-equally allocate the first three resonant frequencies within the specified wide or ultra-wide passband. Next, two identical short-circuited stubs are introduced in shunt between the external ports and the MMR to serve as frequency-dispersive coupling structures with tightened degree. Plus the two additional transmission poles introduced by these two stubs, the final bandpass filter can achieve an ultra-wide passband with five transmission poles. The simulation results agree well with the measurement.
Han Zou Runqi Zhang Lei Zhu
School of Electrical and Electronic Engineering, Nanyang Technological University 639798, Singapore
国际会议
2012 4th International High Speed Intelligent Communication Forum(2012年国际高速智能通信论坛 HSIC2012)
南京
英文
29-31
2012-05-17（万方平台首次上网日期，不代表论文的发表时间）