Wireless propagation in circular tunnels
We study models for propagation in circular tunnels. The excitation is either a circular magnetic or circular electric current loop. We produce expressions for the fields in terms of a Fourier transform over the axial variable. We then produce the modes in the lossy structure by contour integration...
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| Veröffentlicht in: | IEEE transactions on antennas and propagation 2005-01, Vol.53 (1), p.435-441 |
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| container_end_page | 441 |
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| container_issue | 1 |
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| container_title | IEEE transactions on antennas and propagation |
| container_volume | 53 |
| creator | Dudley, D.G. |
| description | We study models for propagation in circular tunnels. The excitation is either a circular magnetic or circular electric current loop. We produce expressions for the fields in terms of a Fourier transform over the axial variable. We then produce the modes in the lossy structure by contour integration techniques. We include numerical results for the field intensity both as a function of axial distance and as a function of radial distance for several frequencies, radii, and constitutive parameters of interest. We comment in particular concerning the specific form of the field both near to and far from the antenna source. |
| doi_str_mv | 10.1109/TAP.2004.836407 |
| format | Article |
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The excitation is either a circular magnetic or circular electric current loop. We produce expressions for the fields in terms of a Fourier transform over the axial variable. We then produce the modes in the lossy structure by contour integration techniques. We include numerical results for the field intensity both as a function of axial distance and as a function of radial distance for several frequencies, radii, and constitutive parameters of interest. We comment in particular concerning the specific form of the field both near to and far from the antenna source.</description><identifier>ISSN: 0018-926X</identifier><identifier>EISSN: 1558-2221</identifier><identifier>DOI: 10.1109/TAP.2004.836407</identifier><identifier>CODEN: IETPAK</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Antennas and propagation ; Attenuation ; Cave propagation ; Current ; Dielectric losses ; Fourier transforms ; Frequency ; Geometry ; lossy circular waveguide ; mine communication ; Propagation losses ; Road transportation ; Transmitters ; tunnel communication ; tunnel propagation</subject><ispartof>IEEE transactions on antennas and propagation, 2005-01, Vol.53 (1), p.435-441</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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The excitation is either a circular magnetic or circular electric current loop. We produce expressions for the fields in terms of a Fourier transform over the axial variable. We then produce the modes in the lossy structure by contour integration techniques. We include numerical results for the field intensity both as a function of axial distance and as a function of radial distance for several frequencies, radii, and constitutive parameters of interest. We comment in particular concerning the specific form of the field both near to and far from the antenna source.</description><subject>Antennas and propagation</subject><subject>Attenuation</subject><subject>Cave propagation</subject><subject>Current</subject><subject>Dielectric losses</subject><subject>Fourier transforms</subject><subject>Frequency</subject><subject>Geometry</subject><subject>lossy circular waveguide</subject><subject>mine communication</subject><subject>Propagation losses</subject><subject>Road transportation</subject><subject>Transmitters</subject><subject>tunnel communication</subject><subject>tunnel propagation</subject><issn>0018-926X</issn><issn>1558-2221</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpdkEtLw0AUhQdRsFbXLtwEF-Im7bxzZ1lKfUBBFxXdDdPJjaSkSZ1JFv57p0QQXF0ufOdw-Ai5ZnTGGDXzzeJ1ximVMxBa0uKETJhSkHPO2SmZUMogN1x_nJOLGHfplSDlhNy_1wEbjDE7hO7gPl1fd21Wt5mvgx8aF7J-aFts4iU5q1wT8er3Tsnbw2qzfMrXL4_Py8U694KZPldIt15DJUvveQXSSE9L5kypXQmi0EWJWjpUpth60FptwRsGTjjHhQKlxJTcjb1pz9eAsbf7OnpsGtdiN0TLgTFtFE3g7T9w1w2hTdus4TSNAQUJmo-QD12MASt7CPXehW_LqD1qs0mbPWqzo7aUuBkTNSL-0aIoNDPiB-RyZ5c</recordid><startdate>200501</startdate><enddate>200501</enddate><creator>Dudley, D.G.</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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The excitation is either a circular magnetic or circular electric current loop. We produce expressions for the fields in terms of a Fourier transform over the axial variable. We then produce the modes in the lossy structure by contour integration techniques. We include numerical results for the field intensity both as a function of axial distance and as a function of radial distance for several frequencies, radii, and constitutive parameters of interest. We comment in particular concerning the specific form of the field both near to and far from the antenna source.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TAP.2004.836407</doi><tpages>7</tpages></addata></record> |
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| identifier | ISSN: 0018-926X |
| ispartof | IEEE transactions on antennas and propagation, 2005-01, Vol.53 (1), p.435-441 |
| issn | 0018-926X 1558-2221 |
| language | eng |
| recordid | cdi_crossref_primary_10_1109_TAP_2004_836407 |
| source | IEEE Electronic Library (IEL) |
| subjects | Antennas and propagation Attenuation Cave propagation Current Dielectric losses Fourier transforms Frequency Geometry lossy circular waveguide mine communication Propagation losses Road transportation Transmitters tunnel communication tunnel propagation |
| title | Wireless propagation in circular tunnels |
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