A New Balanced-to-Unbalanced Filtering Power Divider With Dual Controllable Passbands and Enhanced In-Band Common-Mode Suppression
A New Balanced-to-Unbalanced Filtering Power Divider With Dual Controllable Passbands and Enhanced In-Band Common-Mode Suppression
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具有双可控通带和增强型带内共模抑制的新型平衡至不平衡滤波功率分配器
DOI：
10.1109/tmtt.2018.2883100
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发表时间：
2019-02
影响因子：
4.3
通讯作者：
Wu Wen
中科院分区：
文献类型：
--
作者：
Huang Feng;Wang Jianpeng;Hong Jiasheng;Wu Wen
提出了一种具有双带通滤波响应的新型微带平衡-不平衡功率分配器。推导了滤波平衡-不平衡功率分压器的广义混合模式散射矩阵，以指导设计。分析了在奇模激励下差模（DM）双频滤波响应，表明这两个通带的频率比（<inline-formula> < text -math notation="LaTeX">$k = f_{2}/f_{1}$ </ text -math></inline-formula>）和带宽可以灵活控制。对于偶模激励，引入了额外的开放式存根产生的两个本征传输零，旨在增强带内共模抑制。此外，通过引入接地电阻实现了良好的带内隔离和端口匹配。为了验证设计概念，按照给定的设计过程，实现了两个以1和2.5 GHz为中心的原型（<inline-formula> < text -math notation="LaTeX">$k = 2.5$ </ text -math></inline-formula>），以及0.76和2.75 GHz （<inline-formula> < text -math notation="LaTeX">$k = 3.62$ </ text -math></inline-formula>）。两种电路的测试结果与仿真结果吻合良好，在DM响应、带内CM抑制、端口对端口隔离和端口匹配等方面均表现出良好的性能。
A new microstrip balanced-to-unbalanced power divider with dual bandpass filtering response is presented in this paper. The generalized mixed-mode scattering matrix for the filtering balanced-to-unbalanced power divider is derived to guide the design. Differential-mode (DM) dual-band filtering response is analyzed under the odd-mode excitation to show that the frequency ratio (<inline-formula> <tex-math notation="LaTeX">$k = f_{2}/f_{1}$ </tex-math></inline-formula>) and bandwidth of these two passbands could be flexibly controlled. For the even-mode excitation, two intrinsic transmission zeros generated by additional open-ended stub are introduced, aiming to achieve the enhancement of in-band common-mode (CM) suppression. In addition, good in-band isolation and port matching are realized by introducing a grounded resistor. To validate the design concept, two prototypes centering at 1 and 2.5 GHz (<inline-formula> <tex-math notation="LaTeX">$k = 2.5$ </tex-math></inline-formula>), as well as 0.76 and 2.75 GHz (<inline-formula> <tex-math notation="LaTeX">$k = 3.62$ </tex-math></inline-formula>) are implemented following the given design procedure. Tested results of the two fabricated circuits, well agreeing with the simulated ones, exhibit high performances in terms of DM response, in-band CM suppression, port-to-port isolation, and port matching.
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影响因子：
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2013 Asia-Pacific Microwave Conference Proceedings (APMC)
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DOI：
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影响因子：
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