V波段波导短截线带通滤波器设计
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摘要
设计和分析了V波段E面波导短截线带通滤波器。利用E面波导短截线带阻滤波器的通带-阻带特性与矩形波导的高通特性相结合,将波导短截线带阻滤波器嵌入WR-15矩形波导中,设计具有高阻带抑制性能、过渡边带陡峭、宽阻带范围的V波段宽带带通滤波器。采用"场"、"路"相结合的方法设计的带通滤波器,仿真与测试结果吻合较好,验证了该设计方法的有效性。经测试实现了18%的1 dB带宽,在50.0～57.8 GHz通带内插入损耗≤1 dB,阻带频率58.9 GHz处抑制为43.6 dBc。
Design and analysis of a V-band waveguide E-plane stub band-pass filter was presented. By combining the pass-band and stop-band characteristics of waveguide E-plane stub band-stop filter and the high-pass characteristics of rectangular waveguide, and by embedding the traditional WR-15 rectangular waveguide with a waveguide band-stop filter composed of shunt resonator stubs, a wideband band-pass filter with high stop-band suppression, steep transition-band and wide stop-band characteristics was designed. The band-pass filter was designed by combining EM field and circuit analytical method. It can be found that there is a good agreement between the simulated and measured results. The validity of the proposed design method is enough to prove. The measured results show the waveguide E-plane stub band-pass filter provides 18% 1 dB bandwidth, pass-band insertion loss of not greater than 1 dB in 50.0～57.8 GHz and stop-band rejection of 43.6 dBc at 58.9 GHz.
Design and analysis of a V-band waveguide E-plane stub band-pass filter was presented. By combining the pass-band and stop-band characteristics of waveguide E-plane stub band-stop filter and the high-pass characteristics of rectangular waveguide, and by embedding the traditional WR-15 rectangular waveguide with a waveguide band-stop filter composed of shunt resonator stubs, a wideband band-pass filter with high stop-band suppression, steep transition-band and wide stop-band characteristics was designed. The band-pass filter was designed by combining EM field and circuit analytical method. It can be found that there is a good agreement between the simulated and measured results. The validity of the proposed design method is enough to prove. The measured results show the waveguide E-plane stub band-pass filter provides 18% 1 dB bandwidth, pass-band insertion loss of not greater than 1 dB in 50.0～57.8 GHz and stop-band rejection of 43.6 dBc at 58.9 GHz.
引文
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[2] Chen T S.Characteristics of waveguide resonant-iris filters [J].IEEE Transactions on Microwave Theory and Techniques,1967,15(10):260-262.
[3] Thal H L.Transmit-receive multiplexer for the 12～14 GHz band[J].IEEE Transactions on Microwave Theory and Techniques,1982,30(10):1324-1330.
[4] Amdt F,Dittloff J,Papziner U,et al.Rigorous field theory design of compact and lightweight broadband diplexers for satellite communication systems [C].Proc European Microwave Conf,London,1989:1214-1219.
[5] Arndt F,Bomemann J,Heckmann D,et al.Modal-S-matrix method for the optimum design of inductively direct-coupled cavity filters [C].Proc Inst Elec Eng,Pt H,1986:341-350.
[6] Uher J,Bomemann J,Rosenberg U,et al.Waveguide Components for Antenna Feed Systems:Theory and CAD[M].Boston:Artech,1993:136-138.
[7] 尚洪臣.微波网络[M].南京:东南大学出版社,1996:248-249.
[8] 甘本袚,吴万春.现代微波滤波器结构与设计[M].北京:科学出版社,1973:24-26.
[9] Leviatan Y,Li Ping G,Adams Arlon T,et al.Single-post inductive obstacle in rectangular waveguide[J].IEEE Transactions on Microwave Theory and Techniques,1983,31(10):806-812.