A Tunable low Pass Filter Based on Transmission Lines With Tunable Input/Output Impedance-Reference-Cited by-同舟云学术

A Tunable low Pass Filter Based on Transmission Lines With Tunable Input/Output Impedance

Published:2022-03-25 Issue: Volume:10 Page:
ISSN:2296-424X
Container-title:Frontiers in Physics
language:
Short-container-title:Front. Phys.

Author:

Zhang Zhonghai,Zhao Yuekai,Chen Lin,Fang Zhihua,Wu Aiting,Zhang Pengquan

Abstract

A tunable low pass filter (TLPF) based on the tuning of input/output impedance was presented in this letter. The TLPF mainly consisted of improved quarter-wavelength stubs. The input/output impedance of the improved quarter-wavelength stubs can be tuned in a certain range. The design procedure of this TLPF was derived from the filters based on the quarter-wavelength transmission stubs. Through the tuning of the input/output impedance of the transmission lines, the cut-off frequency of the TLPF can be adjusted in a certain range. The TLPF has relatively good designability and can be easily changed to meet other performance levels. Finally, a TLPF was designed, fabricated, and measured. The measured results verify the effectiveness of the design method.

Publisher

Frontiers Media SA

Subject

Physical and Theoretical Chemistry,General Physics and Astronomy,Mathematical Physics,Materials Science (miscellaneous),Biophysics

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