{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:07:57Z","timestamp":1760242077894,"version":"build-2065373602"},"reference-count":22,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2018,12,13]],"date-time":"2018-12-13T00:00:00Z","timestamp":1544659200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Future Internet"],"abstract":"<jats:p>In this paper, a printed monopole antenna design for WiMAX\/WLAN applications in cable-free self-positioning seismograph nodes is proposed. Great improvements were achieved in miniaturizing the antenna and in widening the narrow bandwidth of the high-frequency band. The antenna was fed by a microstrip gradient line and consisted of a triangle, an inverted-F shape, and an M-shaped structure, which was rotated 90\u00b0 counterclockwise to form a surface-radiating patch. This structure effectively widened the operating bandwidth of the antenna. Excitation led to the generation of two impedance bands of 2.39\u20132.49 and 4.26\u20137.99 GHz for a voltage standing wave ratio of less than 2. The two impedance bandwidths were 100 MHz, i.e., 4.08% relative to the center frequency of 2.45 GHz, and 3730 MHz, i.e., 64.31% relative to the center frequency of 5.80 GHz, covering the WiMAX high-frequency band (5.25\u20135.85 GHz) and the WLAN band (2.4\/5.2\/5.8). This article describes the design details of the antenna and presents the results of both simulations and experiments that show good agreement. The proposed antenna meets the field-work requirements of cable-less seismograph nodes.<\/jats:p>","DOI":"10.3390\/fi10120122","type":"journal-article","created":{"date-parts":[[2018,12,14]],"date-time":"2018-12-14T03:58:17Z","timestamp":1544759897000},"page":"122","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["A Compact Printed Monopole Antenna for WiMAX\/WLAN and UWB Applications"],"prefix":"10.3390","volume":"10","author":[{"given":"Zubin","family":"Chen","sequence":"first","affiliation":[{"name":"Institute of Instrument Science and Electrical Engineering, Jilin University, Changchun 130026, China"},{"name":"Earth Information Detection Instrument Key Laboratory of Ministry of Education, Jilin University, Changchun 130026, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Baijun","family":"Lu","sequence":"additional","affiliation":[{"name":"Institute of Instrument Science and Electrical Engineering, Jilin University, Changchun 130026, China"},{"name":"Earth Information Detection Instrument Key Laboratory of Ministry of Education, Jilin University, Changchun 130026, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yanzhou","family":"Zhu","sequence":"additional","affiliation":[{"name":"Institute of Instrument Science and Electrical Engineering, Jilin University, Changchun 130026, China"},{"name":"Earth Information Detection Instrument Key Laboratory of Ministry of Education, Jilin University, Changchun 130026, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hao","family":"Lv","sequence":"additional","affiliation":[{"name":"Institute of Instrument Science and Electrical Engineering, Jilin University, Changchun 130026, China"},{"name":"Earth Information Detection Instrument Key Laboratory of Ministry of Education, Jilin University, Changchun 130026, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,12,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"4063","DOI":"10.1109\/TAP.2010.2078451","article-title":"Design of compact dual-wideband antenna with assembled monopoles","volume":"58","author":"Chu","year":"2010","journal-title":"IEEE Trans. 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Aided Eng."}],"container-title":["Future Internet"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1999-5903\/10\/12\/122\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T15:33:40Z","timestamp":1760196820000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1999-5903\/10\/12\/122"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,12,13]]},"references-count":22,"journal-issue":{"issue":"12","published-online":{"date-parts":[[2018,12]]}},"alternative-id":["fi10120122"],"URL":"https:\/\/doi.org\/10.3390\/fi10120122","relation":{},"ISSN":["1999-5903"],"issn-type":[{"type":"electronic","value":"1999-5903"}],"subject":[],"published":{"date-parts":[[2018,12,13]]}}}