{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,15]],"date-time":"2026-04-15T18:18:34Z","timestamp":1776277114041,"version":"3.50.1"},"reference-count":21,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2025,2,24]],"date-time":"2025-02-24T00:00:00Z","timestamp":1740355200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Circuit Theory &amp;amp; Apps"],"published-print":{"date-parts":[[2025,10]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:p>A broadband dual\u2010band negative group delay circuit (NGDC) with flat group delay is proposed. Without the cascade structure, the proposed NGDC consists of an open\u2010circuited coupled lines connected with a resistor through transmission lines and a matching network. The flatness of the negative group delay (NGD) and center frequencies of the lower and upper bands can be designed through changing the characteristic impedance of the transmission lines. And the NGD time is adjusted by modifying the parameters of the coupled line. Low GD ripple could be achieved by the proposed dual\u2010band NGDC with a small circuit size. To verify the design concept, a dual\u2010band NGDC is simulated, fabricated, and measured. The measured NGD times are \u22120.51\u2009ns at the center frequencies of 0.32 and 1.39\u2009GHz with insertion loss of 20.8 and 21.2\u2009dB, respectively. The flat\u2010NGD bandwidth reaches 32.8% from 0.275 to 0.380\u2009GHz and 6.8% from 1.350 to 1.445\u2009GHz with 10% group delay fluctuation.<\/jats:p>","DOI":"10.1002\/cta.4501","type":"journal-article","created":{"date-parts":[[2025,3,11]],"date-time":"2025-03-11T16:55:45Z","timestamp":1741712145000},"page":"5760-5768","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["A Broadband Dual\u2010Band Negative Group Delay Circuit With Flat Group Delay"],"prefix":"10.1002","volume":"53","author":[{"ORCID":"https:\/\/orcid.org\/0009-0008-6057-6200","authenticated-orcid":false,"given":"Yuwei","family":"Meng","sequence":"first","affiliation":[{"name":"School of Information Science and Engineering Dalian Polytechnic University  Dalian China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aixia","family":"Yuan","sequence":"additional","affiliation":[{"name":"School of Information Science and Engineering Dalian Polytechnic University  Dalian China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhenping","family":"Lan","sequence":"additional","affiliation":[{"name":"School of Information Science and Engineering Dalian Polytechnic University  Dalian China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xianying","family":"Xu","sequence":"additional","affiliation":[{"name":"School of Information Science and Engineering Dalian Polytechnic University  Dalian China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2025,2,24]]},"reference":[{"issue":"1","key":"e_1_2_8_2_1","first-page":"8","article-title":"Recovery of Microwave\u2010Digital Signal Integrity With NGD Circuits","volume":"2","author":"Ravelo B.","year":"2013","journal-title":"Photonics and Optoelectronics"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.aeue.2016.05.009"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.2528\/PIERB23060902"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1109\/TMTT.2021.3074577"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1109\/TCSII.2021.3059813"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1109\/TCSII.2016.2636179"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1049\/el.2019.1277"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.3390\/electronics12041064"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/mop.33695"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1109\/TCSII.2020.3012959"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1109\/LMWC.2010.2089675"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.2528\/PIERB22120942"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1109\/LMWC.2014.2322445"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.13164\/re.2018.1070"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1002\/mop.30979"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1109\/RWS56914.2024.10438498"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2020.2978545"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2020.2988096"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.2528\/PIERL21041701"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.1109\/LMWC.2022.3162841"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1109\/JMW.2022.3192114"}],"container-title":["International Journal of Circuit Theory and Applications"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/cta.4501","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,6]],"date-time":"2025-10-06T03:18:46Z","timestamp":1759720726000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/cta.4501"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,2,24]]},"references-count":21,"journal-issue":{"issue":"10","published-print":{"date-parts":[[2025,10]]}},"alternative-id":["10.1002\/cta.4501"],"URL":"https:\/\/doi.org\/10.1002\/cta.4501","archive":["Portico"],"relation":{},"ISSN":["0098-9886","1097-007X"],"issn-type":[{"value":"0098-9886","type":"print"},{"value":"1097-007X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,2,24]]},"assertion":[{"value":"2024-10-07","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-02-16","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-02-24","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}