A novel tri-band filter realization via band-splitting technique

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概要

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• This letter presents a novel microstrip tri-band filter in which a shunt-stub bandpass filter and a dual-band bandstop filter are integrated into a single structure of short length. The two stopbands of the bandstop filter are allocated within the wideband passband of the bandpass filter, resulting in a filter having three passbands. Good return loss is obtained using an optimization routine. This technique has high flexibility on setting the bandwidths and center frequencies of passbands. A prototype filter is designed and fabricated. Good agreements between simulation and measurement in respect of low insertion loss and high isolation are demonstrated.

著者

• Liu Yun

  College Of Life Science Hunan Normal University

• Cui Mengmeng

  School of computer and software, Nanjing University of Information Science and Techonology

• Zhao Yongjiu

  College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics

• Meng Hongfu

  State Key Laboratory of Millimeter Waves, Southeast University

• Liu Yun

  College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics

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• A novel tri-band filter realization via band-splitting technique

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