Abstract
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.
Original language | English |
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Title of host publication | IMS 2020 - 2020 IEEE/MTT-S International Microwave Symposium |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 912-915 |
Number of pages | 4 |
ISBN (Electronic) | 9781728168159 |
DOIs | |
Publication status | Published - 2020 Aug |
Event | 2020 IEEE/MTT-S International Microwave Symposium, IMS 2020 - Virtual, Los Angeles, United States Duration: 2020 Aug 4 → 2020 Aug 6 |
Publication series
Name | IEEE MTT-S International Microwave Symposium Digest |
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Volume | 2020-August |
ISSN (Print) | 0149-645X |
Conference
Conference | 2020 IEEE/MTT-S International Microwave Symposium, IMS 2020 |
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Country/Territory | United States |
City | Virtual, Los Angeles |
Period | 20/8/4 → 20/8/6 |
Bibliographical note
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.
Keywords
- Absorptive filters
- Distributed-element filters
ASJC Scopus subject areas
- Radiation
- Condensed Matter Physics
- Electrical and Electronic Engineering