TY - GEN
T1 - Distributed-element absorptive bandpass filter with a broadband impedance matching
AU - Lee, Jongheun
AU - Nam, Seunggoo
AU - Lee, Juseop
N1 - Funding Information:
ACKNOWLEDGMENT This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. NRF-2018R1A2B6006095).
Publisher Copyright:
© 2020 IEEE.
PY - 2020/8
Y1 - 2020/8
N2 - In this paper, we present a new method for designing absorptive bandpass filters using coupled lines. The new design method and filter structure allow an absorptive bandpass filter to have good impedance matching performance over a wider frequency range in comparison with distributed-element absorptive filters reported in the literature. Closed form design equations are provided so that a filter can be designed in a way to produce a target frequency response. For verifying the presented design approach, a second-order absorptive bandpass filter centered at 2 GHz having 10% fractional bandwidth has been designed, fabricated, and measured. The measurement shows that the return losses (S11 and S22) are overall larger than 10 dB from DC to 3 f0.
AB - In this paper, we present a new method for designing absorptive bandpass filters using coupled lines. The new design method and filter structure allow an absorptive bandpass filter to have good impedance matching performance over a wider frequency range in comparison with distributed-element absorptive filters reported in the literature. Closed form design equations are provided so that a filter can be designed in a way to produce a target frequency response. For verifying the presented design approach, a second-order absorptive bandpass filter centered at 2 GHz having 10% fractional bandwidth has been designed, fabricated, and measured. The measurement shows that the return losses (S11 and S22) are overall larger than 10 dB from DC to 3 f0.
KW - Absorptive filters
KW - Distributed-element filters
UR - http://www.scopus.com/inward/record.url?scp=85094219198&partnerID=8YFLogxK
U2 - 10.1109/IMS30576.2020.9223959
DO - 10.1109/IMS30576.2020.9223959
M3 - Conference contribution
AN - SCOPUS:85094219198
T3 - IEEE MTT-S International Microwave Symposium Digest
SP - 912
EP - 915
BT - IMS 2020 - 2020 IEEE/MTT-S International Microwave Symposium
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2020 IEEE/MTT-S International Microwave Symposium, IMS 2020
Y2 - 4 August 2020 through 6 August 2020
ER -