Path-loss characteristics in subway tunnels at 2.65 GHz
This paper presents the measurement of electromagnetic wave propagation in subway tunnels at f = 2.6425 GHz. The main goal of this work is to obtain more accurate knowledge of the propagation characteristics in straight and curved tunnels. Measurements have been conducted in four different types of...
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| Veröffentlicht in: | Microwave and optical technology letters 2006-02, Vol.48 (2), p.383-386 |
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| container_title | Microwave and optical technology letters |
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| creator | Choi, Myung-Sun Kim, Do-Youn Jo, Han-Shin Yook, Jong-Gwan Park, Han-Kyu |
| description | This paper presents the measurement of electromagnetic wave propagation in subway tunnels at f = 2.6425 GHz. The main goal of this work is to obtain more accurate knowledge of the propagation characteristics in straight and curved tunnels. Measurements have been conducted in four different types of tunnel courses: a straight tunnel, two curved tunnels (with 245‐m and 500‐m radius of curvature, respectively), and a tunnel that has both straight and curved sections. From the measured results, we analyze and compare the differences between the straight and curved tunnels, particularly with regard to path loss and the effect of path loss arising from different curvatures, and the characteristics of the combined tunnel (the straight and curved tunnel). The findings presented here should prove helpful in the estimation of link budget for satellite DMB service in tunnels and the determination of accurate propagation characteristics in tunnels. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 383–386, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21357 |
| doi_str_mv | 10.1002/mop.21357 |
| format | Article |
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The main goal of this work is to obtain more accurate knowledge of the propagation characteristics in straight and curved tunnels. Measurements have been conducted in four different types of tunnel courses: a straight tunnel, two curved tunnels (with 245‐m and 500‐m radius of curvature, respectively), and a tunnel that has both straight and curved sections. From the measured results, we analyze and compare the differences between the straight and curved tunnels, particularly with regard to path loss and the effect of path loss arising from different curvatures, and the characteristics of the combined tunnel (the straight and curved tunnel). The findings presented here should prove helpful in the estimation of link budget for satellite DMB service in tunnels and the determination of accurate propagation characteristics in tunnels. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 383–386, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). 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Opt. Technol. Lett</addtitle><description>This paper presents the measurement of electromagnetic wave propagation in subway tunnels at f = 2.6425 GHz. The main goal of this work is to obtain more accurate knowledge of the propagation characteristics in straight and curved tunnels. Measurements have been conducted in four different types of tunnel courses: a straight tunnel, two curved tunnels (with 245‐m and 500‐m radius of curvature, respectively), and a tunnel that has both straight and curved sections. From the measured results, we analyze and compare the differences between the straight and curved tunnels, particularly with regard to path loss and the effect of path loss arising from different curvatures, and the characteristics of the combined tunnel (the straight and curved tunnel). The findings presented here should prove helpful in the estimation of link budget for satellite DMB service in tunnels and the determination of accurate propagation characteristics in tunnels. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 383–386, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). 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Opt. Technol. Lett</addtitle><date>2006-02</date><risdate>2006</risdate><volume>48</volume><issue>2</issue><spage>383</spage><epage>386</epage><pages>383-386</pages><issn>0895-2477</issn><eissn>1098-2760</eissn><abstract>This paper presents the measurement of electromagnetic wave propagation in subway tunnels at f = 2.6425 GHz. The main goal of this work is to obtain more accurate knowledge of the propagation characteristics in straight and curved tunnels. Measurements have been conducted in four different types of tunnel courses: a straight tunnel, two curved tunnels (with 245‐m and 500‐m radius of curvature, respectively), and a tunnel that has both straight and curved sections. From the measured results, we analyze and compare the differences between the straight and curved tunnels, particularly with regard to path loss and the effect of path loss arising from different curvatures, and the characteristics of the combined tunnel (the straight and curved tunnel). The findings presented here should prove helpful in the estimation of link budget for satellite DMB service in tunnels and the determination of accurate propagation characteristics in tunnels. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 383–386, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21357</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><doi>10.1002/mop.21357</doi><tpages>4</tpages></addata></record> |
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| subjects | combined tunnels path-loss propagation characteristics satellite DMB service straight and curved tunnel |
| title | Path-loss characteristics in subway tunnels at 2.65 GHz |
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