Development of Cast Iron Manhole Cover With Broadband-Radio-Transmission Characteristics Applying Spiral Structure

IF 3.7 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-12-02 DOI:10.1109/LAWP.2024.3509772

Eiichi Tateishi;Yuantong Yi;Nobuhiro Kai;Takaya Kumagae;Tatsuya Yamaguchi;Haruichi Kanaya

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Abstract

This letter reports on a cast iron manhole cover with a slit structure to improve the efficiency of radio propagation from underground structures. The spiral slit of a broadband antenna was applied to the iron cover to achieve broadband radio propagation characteristics. A full-scale manhole model was fabricated and evaluated, resulting in a maximum gain of 2.5 dB and a bandwidth of 193 MHz [(807 to 1000) MHz]. The results of field tests with the prototype showed an average of −77.9 dBm for the slit iron cover and −100.5 dBm for the conventional product in wireless communication from inside a manhole through the iron cover. The 22.6 dBm improvement in radio transmission while maintaining the functionality of the steel cover is sufficiently practical. This result can contribute to the maintenance and management of aging infrastructure and the spread of disaster prevention systems as a technology to reduce the cost of introducing Internet-of-Things (IoT) systems to underground infrastructure.

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来源期刊

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.