TY - GEN
T1 - Practical design method of distributed-element reflectionless bandstop filters
AU - Lee, Jongheun
AU - Lee, Juseop
N1 - Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIT) (No. NRF-2018R1A2B6006095.
Publisher Copyright:
© 2021 IEEE.
PY - 2021/1/31
Y1 - 2021/1/31
N2 - A practical reflectionless bandstop filter topology is presented in this paper. One unique feature of the presented distributed-element reflectionless filter circuit compared to others is that it only requires to design and tune $N+1$ pairs of coupled lines for an Nth-order filter. Closed-form design equations for a second-order filter have been provided, and they can be expanded for higher-order filters. For verifying the presented filter topology and the design method, a reflectionless bandstop filter has been designed, fabricated, and measured. The measurement shows that the fabricated filter has the return loss larger than 20 dB in the frequency range of interest, with having the predefined transmission response.
AB - A practical reflectionless bandstop filter topology is presented in this paper. One unique feature of the presented distributed-element reflectionless filter circuit compared to others is that it only requires to design and tune $N+1$ pairs of coupled lines for an Nth-order filter. Closed-form design equations for a second-order filter have been provided, and they can be expanded for higher-order filters. For verifying the presented filter topology and the design method, a reflectionless bandstop filter has been designed, fabricated, and measured. The measurement shows that the fabricated filter has the return loss larger than 20 dB in the frequency range of interest, with having the predefined transmission response.
KW - Filter design
UR - http://www.scopus.com/inward/record.url?scp=85102974971&partnerID=8YFLogxK
U2 - 10.1109/ICEIC51217.2021.9369778
DO - 10.1109/ICEIC51217.2021.9369778
M3 - Conference contribution
AN - SCOPUS:85102974971
T3 - 2021 International Conference on Electronics, Information, and Communication, ICEIC 2021
BT - 2021 International Conference on Electronics, Information, and Communication, ICEIC 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 International Conference on Electronics, Information, and Communication, ICEIC 2021
Y2 - 31 January 2021 through 3 February 2021
ER -