论文部分内容阅读
引入一种新型双通带滤波器耦合结构,采用微带线型SIR结构分别设计了切比雪夫型和准椭圆函数型2.4GHz/5.2GHz双频带通滤波器。运用电磁数值分析软件讨论了结构参数对双通带滤波器耦合性能的影响,以及准椭圆函数型滤波器耦合结构参数对其传输零点位置的影响,并在文中给出其变化规律。基于该耦合结构的新型双频带滤波器,设计自由度更高,两个通带所需耦合系数可以独立调节。根据以上结构参数所制备的样品,其性能测试结果与仿真结果吻合良好。
A novel dual-passband filter coupling structure is introduced. The Chebyshev and quasi-elliptic function 2.4GHz / 5.2GHz dual-band bandpass filters are respectively designed by the microstrip line type SIR structure. The influence of structural parameters on the coupling performance of the double passband filter and the influence of the parameters of the quasi-elliptic function filter on its transmission zero position are discussed by using electromagnetic numerical analysis software. The new dual-band filter based on the coupling structure has higher design freedom and the required coupling coefficients for the two passbands can be independently adjusted. According to the above structural parameters of the sample prepared, the performance test results and simulation results agree well.