平衡到非平衡双通带滤波功分器  

Balanced-to-unbalanced Dual-band Filtering Power Divider

作　　者：程彬彬 李国辉[1] 宋雨潞 Cheng Binbin

机构地区：[1]上海大学通信与信息工程学院,上海200444

出　　处：《工业控制计算机》2022年第7期147-149,共3页Industrial Control Computer

摘　　要：为了向下拓宽双通带频比的范围,以便于在实际应用中有更多的选择,提出了一种新的平衡到非平衡双通带滤波功分器结构。在奇模激励下,可实现双通带的滤波响应,在偶模激励下,具有宽带的共模抑制。此外,由接地电阻可实现良好的输出端口匹配与隔离度。基于奇偶模方法的理论分析,得到所设计电路的参数方程。为验证上述理论,采用微带线结构得到了一款平衡到非平衡双通带滤波功分器,两个通带中心频率分别位于1 GHz和2 GHz,电磁仿真结果与理论结果吻合良好,证实了方法的正确性。该设计结构简单,并且具有优越的差模传输频选特性和较宽的共模抑制特性。A novel balanced-to-unbalanced dual-band filtering power divider is proposed in this paper.Under the odd-mode excitation,dual-band filtering response can be realized.While it provides wide common mode suppression for even-mode excitation.Furthermore,good matching for the output port and isolation can be achieved by introducing the grounded resistor.Based on the theoretical analysis of even-odd mode method,the parametric equations of the designed circuit can be obtained.To verify the above theory,a balanced-to-unbalanced dual-band filtering power divider is implemented using microstrip line structure,and its center frequencies of two passbands are located at 1 GHz and 2 GHz respectively.The electromagnetic simulation results are in good agreement with the theoretical results,which confirms the correctness of the method.

关 键 词：平衡到非平衡 双通带 滤波响应 功分器 

分 类 号：TN626[电子电信—电路与系统]