{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,14]],"date-time":"2026-02-14T09:42:53Z","timestamp":1771062173000,"version":"3.50.1"},"reference-count":43,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2019,6,5]],"date-time":"2019-06-05T00:00:00Z","timestamp":1559692800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Wireless Sensor Networks (WSNs) had been applied in Internet of Things (IoT) and in Industry 4.0. Since a WSN system contains multiple wireless sensor nodes, it is necessary to develop a low-power and multiband wireless communication system that satisfies the specifications of the Federal Communications Commission (FCC) and the Certification European (CE). In a WSN system, many devices are of very small size and can be slipped into a Universal Serial Bus (USB), which is capable of connecting to wireless systems and networks, as well as transferring data. These devices are widely known as USB dongles. This paper develops a planar USB dongle antenna for three frequency bands, namely 2.30\u20132.69 GHz, 3.40\u20133.70 GHz, and 5.15\u20135.85 GHz. This study proposes a novel antenna design that uses four loops to develop the multiband USB dongle. The first and second loops construct the low and intermediate frequency ranges. The third loop resonates the high frequency property, while the fourth loop is used to enhance the bandwidth. The performance and power consumption of the proposed multiband planar USB dongle antenna were significantly improved compared to existing multiband designs.<\/jats:p>","DOI":"10.3390\/s19112568","type":"journal-article","created":{"date-parts":[[2019,6,6]],"date-time":"2019-06-06T03:38:01Z","timestamp":1559792281000},"page":"2568","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["A Power-Efficient Multiband Planar USB Dongle Antenna for Wireless Sensor Networks"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5158-0031","authenticated-orcid":false,"given":"Wei-Yuan","family":"Chiang","sequence":"first","affiliation":[{"name":"Department of Electrical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chia-Hao","family":"Ku","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7605-5214","authenticated-orcid":false,"given":"Chiung-An","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Le-Yu","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Patricia Angela R.","family":"Abu","sequence":"additional","affiliation":[{"name":"Department of Information Systems and Computer Science, Ateneo de Manila University, Quezon City 1108, Philippines"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pei-Zong","family":"Rao","sequence":"additional","affiliation":[{"name":"Shenzhen Jaguar Wave Technology Co. Ltd., Shenzhen 518103, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5114-8393","authenticated-orcid":false,"given":"Chih-Kai","family":"Liu","sequence":"additional","affiliation":[{"name":"Shenzhen Jaguar Wave Technology Co. Ltd., Shenzhen 518103, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1573-2696","authenticated-orcid":false,"given":"Chao-Hsiang","family":"Liao","sequence":"additional","affiliation":[{"name":"Wireless Laboratory, SGS Taiwan Ltd., New Taipei City 24803, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4079-9350","authenticated-orcid":false,"given":"Shih-Lun","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Electronic Engineering, Chung Yuan Christian University, Taoyuan City 32023, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2019,6,5]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"16211","DOI":"10.3390\/s121216211","article-title":"An Efficient Micro Control Unit with a Reconfigurable Filter Design for Wireless Body Sensor Networks (WBSNs)","volume":"12","author":"Chen","year":"2012","journal-title":"Sensors"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"7022","DOI":"10.3390\/s110707022","article-title":"An asynchronous multi-sensor micro control unit for wireless body sensor network (WBSN)","volume":"11","author":"Chen","year":"2011","journal-title":"Sensors"},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Chen, C.A., Wu, C., Abu, P., and Chen, S.L. 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