Differential Wideband Bandpass Filter With High-Selectivity and Common-Mode Suppression

作者：Wu, Xiao-Hu^*; Chu, Qing-Xin; Qiu, Lei-Lei

来源：IEEE Microwave and Wireless Components Letters, 2013, 23(12): 644-646.

DOI：10.1109/LMWC.2013.2284787

• Bandpass filter (BPF)
• bandstop filter (BSF)
• common-mode
• differential-mode
• selectivity
• wideband

A circuit for differential wideband bandpass filter (BPF) is presented. The circuit works as a bandpass and band-stop 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.

• 出版日期2013-12
• 单位华南理工大学; 中国科学院电工研究所