摘要
广义切比雪夫带阻滤波器含有相移的设计可以使带阻滤波器实现任意位置的反射零点。含有相移的网络在实现之前必须进行优化以减少杂散波的影响,据此从低通原型电路出发,设计制作并测试了一个结构新颖的含有相移的四阶线形带阻滤波器,其中心频率为9.780 GHz,阻带抑制为39 dB,通带中的回波损耗超过18.17 dB。最终的测试和仿真结果证明了这种设计的可行性。
The design method of Chebyshev band stop filters with phase shifts can let general band stop filters to realize reflection zeros in arbitrary places. The network, which includes phase shifts, must be optimized to decrease the effect of heterogeneous electromagnetic waves before realization. So, a novel four-order in-line bandstop filter with phase-shifts was designed, fabricated and tested from the low pass prototype circuit. The result shows that the filter center frequency is 9.78 GHz and stop band attenuation is 39 dB, the return loss in the passband is over 18.17 dB. Test and simulating results demonstrate the validity of this design.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2011年第12期50-53,共4页
Electronic Components And Materials
关键词
带阻滤波器
相移
反射零点
band stop filter
phase shift
reflection zero
