{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,7]],"date-time":"2026-03-07T18:20:41Z","timestamp":1772907641353,"version":"3.50.1"},"reference-count":27,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2022,4,1]],"date-time":"2022-04-01T00:00:00Z","timestamp":1648771200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Information Technology Research Center","award":["IITP-2021-2017-0-01630"],"award-info":[{"award-number":["IITP-2021-2017-0-01630"]}]},{"name":"the GRRC program of the Gyeonggi province","award":["GRRC-Gachon2020(B01)"],"award-info":[{"award-number":["GRRC-Gachon2020(B01)"]}]},{"name":"G-ABC","award":["G-ABC FRD2019-11-02(3)"],"award-info":[{"award-number":["G-ABC FRD2019-11-02(3)"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The consumption of multimedia content is ubiquitous in modern society. This is made possible by wireless local area networks (W\u2013LAN) or wire service systems. Bandpass filters (BPF) have become very popular as they solve certain data transmission limitations allowing users to obtain reliable access to their multimedia content. The BPFs with quarter\u2013wavelength short stubs can achieve performance; however, these BPFs are bulky. In this article, we propose a compact BPF with a T\u2013shaped stepped impedance resonator (SIR) transmission line and a folded SIR structure. The proposed BPF uses a T\u2013shaped SIR connected to a J\u2013inverter structure (transmission line); this T\u2013shaped SIR structure is used to replace the \u03bbg\/4 transmission line seen in conventional stub BPFs. In addition, a folded SIR is added to the short stubs seen in conventional stub BPFs. This approach allows us to significantly reduce the size of the BPF. The advantage of a BPF is its very small size, low insertion loss, and wide bandwidth. The overall size of the new BPF is 2.44 mm \u00d7 1.49 mm (0.068\u03bbg \u00d7 0.059\u03bbg). The proposed BPF can be mass produced using semiconductors due to its planar structure. This design has the potential to be widely used in various areas including military, medical, and industrial systems.<\/jats:p>","DOI":"10.3390\/s22072708","type":"journal-article","created":{"date-parts":[[2022,4,1]],"date-time":"2022-04-01T21:23:55Z","timestamp":1648848235000},"page":"2708","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Miniaturized Bandpass Filter Using a Combination of T\u2013Shaped Folded SIR Short Loaded Stubs"],"prefix":"10.3390","volume":"22","author":[{"given":"Kicheol","family":"Yoon","sequence":"first","affiliation":[{"name":"Medical Devices R&D Center, Gachon University Gil Medical Center, 21, 774 Beon-gil, Namdong-daero, Namdong-gu, Incheon 21565, Korea"},{"name":"Department of Biomedical Engineering, College of Medicine, Gachon University, 38-13, 3 Beon-gil, Dokjom-ro 3, Namdong-gu, Incheon 21565, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9714-6038","authenticated-orcid":false,"given":"Kwang Gi","family":"Kim","sequence":"additional","affiliation":[{"name":"Medical Devices R&D Center, Gachon University Gil Medical Center, 21, 774 Beon-gil, Namdong-daero, Namdong-gu, Incheon 21565, Korea"},{"name":"Department of Biomedical Engineering, College of Medicine, Gachon University, 38-13, 3 Beon-gil, Dokjom-ro 3, Namdong-gu, Incheon 21565, Korea"},{"name":"Department of Biomedical Engineering, College of Health Science, Gachon University, 191 Hambak-moero, Yeonsu-gu, Incheon 21936, Korea"},{"name":"Department of Health Sciences and Technology, Gachon Advanced Institute for Health Sciences and Technology (GAIHST), Gachon University, 38-13, 3 Beon-gil, Dokjom-ro, Namdong-gu, Incheon 21565, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tae-Hyeon","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Electronic Engineering, Gyeonggi University of Science and Technology, 269 Gyeonggigwagi-daero, Siheung 15073, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,4,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Tambare, P., Meshram, C., Lee, C.C., and Ramteke, R.J. 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