@inproceedings{357396609e014854b5a5d29127428ecf,
title = "Constant-absolute-bandwidth frequency-tunable half-mode SIW filter containing no tunable coupling structures",
abstract = "A new half-mode frequency-tunable SIW (substrate-integrated waveguide) bandpass filter with a constant absolute bandwidth is presented in this paper. For achieving the constant bandwidth, we have developed new external and internal coupling structures capable of exhibiting specified coupling values over the frequency tuning range of the presented filter. Hence, the presented filter employs no tuning components in the coupling structures and this avoids the insertion loss increase due to tuning components. For verification, a second-order filter has been designed, fabricated, and measured. The filter has the insertion loss smaller than 2.0 dB over the frequency tuning range from 1.85 GHz to 2.3 GHz. The bandwidth slightly varies from 136 MHz to 142 MHz.",
keywords = "Absolute bandwidth, Bandpass filter, Half-mode, SIW, Tunable filter",
author = "Seunggoo Nam and Boyoung Lee and Juseop Lee",
note = "Funding Information: ACKNOWLEDGMENTS This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Science, ICT & Future Planning(NRF-2015R1C1A1A02036754). Publisher Copyright: {\textcopyright} 2017 IEEE.; 2017 IEEE MTT-S International Microwave Symposium, IMS 2017 ; Conference date: 04-06-2017 Through 09-06-2017",
year = "2017",
month = oct,
day = "4",
doi = "10.1109/MWSYM.2017.8059093",
language = "English",
series = "IEEE MTT-S International Microwave Symposium Digest",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "267--270",
booktitle = "2017 IEEE MTT-S International Microwave Symposium, IMS 2017",
}