Compact Tunable Balanced Bandpass Filter With Novel Multi-Mode Resonator
Compact Tunable Balanced Bandpass Filter With Novel Multi-Mode Resonator
复制标题
DOI：
10.1109/lmwc.2016.2629965
复制
发表时间：
2017
影响因子：
3
通讯作者：
Shi-Xuan Zhang;Zhi-Han Chen;Q. Chu;Senior Member
中科院分区：
文献类型：
--
作者：
Shi-Xuan Zhang;Zhi-Han Chen;Q. Chu;Senior Member
提出了一种新型多模谐振器，用于设计紧凑的可调谐平衡带通滤波器。从理论分析来看，共模谐振频率与差模谐振频率不同，因此可以在不添加额外集总元件的情况下实现共模抑制。对于DM响应，奇偶模态的模态频率可以通过改变变容器来同时调整。这有助于设计具有可调谐通带中心频率的DM响应。此外，均匀模谐振频率可以独立调谐，从而使DM的通带带宽可控。为了验证设计方法，开发、制作和测量了一个紧凑的可调谐平衡BPF。实验结果与仿真结果吻合较好。
A novel multi-mode resonator is presented to design compact tunable balanced bandpass filters (BPFs). From the theoretical analysis, the common-mode (CM) resonant frequencies are different from that of the differential-mode (DM) response, so the CM suppression can be achieved without adding any extra lumped elements. For the DM response, the modal frequencies of odd and even modes can be adjusted simultaneously by varying the varactors. This helps to design the DM response with tunable passband center frequency. Moreover, the even-mode resonant frequency can be tuned independently, leading to controllable passband bandwidth of the DM. To verify the design method, a compact tunable balanced BPF is developed, fabricated and measured. Good agreement can be attained between the measurement and simulation.