A Novel UWB Filter with Dual-notch-bands Characteristic Using Radial-multimode Loaded Stub Resonator
this paper presents a novel approach for designing compact ultra-wideband(UWB)band-pass filter with a good dual-notched band characteristic.By using a radial-multimode loaded stub resonator,one notch-band can be got.Another notch-band can be generated by the half-wavelength parasitic micro-strip Resonator.The main advantage of the proposed filter is the frequency of the notched band can be tuned easily in a wide frequency range.The first notch-band can be changed from 4 GHz to 6 GHz.The second notch-band can be changed from 7 GHz to 9 GHz.Electric filed distribution and equivalent model is also given depending on the odd/even excitation resonance condition.The characteristics of the filter are analyzed.To verify the proposed methods,filter is designed and fabricated.Measured results show the proposed UWB properties from 3 to 10.8 GHz.The UWB filters dual-notch-bands whose center frequencies are 4.5 GHz and 7.7 GHz and have 10 dB fractional bandwidths of about 2.2%and 1.3%,respectively.These filters can be integrated in UWB radio systems and efficiently enhance the interference immunity from undesired signals such as wireless local area network(WLAN)and WiMAX.
C.Y.Liu T.Jiang Y.S.Li J.Zhang
College of Information and Communications Engineering Harbin Engineering University,Harbin,Heilongjiang 150001,China
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
1119-1121
2011-09-01（万方平台首次上网日期，不代表论文的发表时间）