1800MHz同轴谐振微波介质滤波器的结构设计及其仿真

Structure Design and Simulation of a 1800MHz Microwave Dielectric Filter Using Coaxial Resonators

研究18 0 0MHz的微波介质滤波器的设计原理和计算方法,同时使用高频结构仿真软件对所设计的滤波器进行了仿真分析。所要求的滤波器的参数指标为:中心频率f0 =180 0MHz ,插入损耗IL <2 .5dB ,3dB带宽BW =4 5MHz ,带内波动Ap<1.5dB ,10 0MHz处带外抑制As>2 5dB。

This paper introduces the design principle and calculating method of a 1800MHz microwave dielectric filter consisting of coaxial resonator, and uses High Frequency Structure Simulation (HFSS) software to simulate the design. The required parameters of the microwave bandpass dielectric filter : center frequency f 0 =1800MHz,insertion loss IL>2.5dB,3dB band BW=45MHz, ripple in the band A p <1.5dB,the attenuation in the stopband A s >25dB.