SIR广义切比雪夫同轴腔体滤波器仿真设计

Simulation Design of SIR Generalized Chebyshev Coaxial-cavity Filter

利用阶跃阻抗谐振器SIR作为同轴腔滤波器的基本谐振单元,设计了一个利用交叉耦合来实现广义切比雪夫函数的同轴腔体滤波器。文章主要用微波CAD软件HFSS对理论进行了仿真验证,结果表明这种形式的滤波器较好地提高了滤波器的带外抑制能力,达到了对滤波器的小体积、低插损的设计要求。

Stepped Impedance Resonators （SIR） taken as basic resonator unit of coaxial filters, a kind of generalized Chebyshev coaxial-cavity fiher through cross coupling is designed. The theory is simulated and verificated with microwave CAD HFSS software. The simulation results show that this type filter can enhance the restrainability of stopband and attain the demand goals of small size, wide stopband of filter.