Differential Wideband Bandpass Filter With High-Selectivity and Common-Mode Suppression
Differential Wideband Bandpass Filter With High-Selectivity and Common-Mode Suppression
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DOI：
10.1109/lmwc.2013.2284787
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发表时间：
2013-10
影响因子：
3
通讯作者：
Xiao-Hu Wu;Q. Chu;Lei‐Lei Qiu
中科院分区：
文献类型：
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作者：
Xiao-Hu Wu;Q. Chu;Lei‐Lei Qiu
提出了一种差分宽带带通滤波器电路。该电路在差分和共模激励下分别作为带通和带阻滤波器工作。在差模下，短端并联耦合短截线产生两个传输零点，提供了一个非常尖锐的差分通带。分析并给出了电路参数，说明了电路的特点.最后，采用微带技术实现了该电路，并设计、仿真和测量了差分宽带带通滤波器。模拟结果与实测结果吻合较好。
A circuit for differential wideband bandpass filter (BPF) is presented. The circuit works as a bandpass and bandstop filter under differential- and common-mode excitation, respectively. Under differential-mode, two transmission zeros are generated by the short-ended parallel-coupled stubs and supply a very sharp differential passband. The circuit parameters are analyzed and given to show the circuit characteristics. Finally, the circuit is implemented using microstrip technology and a differential wideband BPF is designed, simulated and measured. Simulated and measured results are well agreed.