Scattering resonances on a fast-wave structure

This investigation is concerned with the scattering resonances, or generalized Wood's anomalies, that are exhibited on a fast-wave structure. In the past, all similar efforts have confined their attention to structures supporting a basic slow wave along the surface. In the frequency range \frac...

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Veröffentlicht in:	I.R.E. transactions on antennas and propagation 1965-11, Vol.13 (6), p.948-959
Hauptverfasser:	Li, R., Oliner, A.
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Sprache:	eng
Schlagworte:	Diffraction Frequency Optical reflection Optical scattering Optical waveguides Periodic structures Polarization Rayleigh scattering Resonance Surface waves
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container_end_page	959
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container_title	I.R.E. transactions on antennas and propagation
container_volume	13
creator	Li, R. Oliner, A.
description	This investigation is concerned with the scattering resonances, or generalized Wood's anomalies, that are exhibited on a fast-wave structure. In the past, all similar efforts have confined their attention to structures supporting a basic slow wave along the surface. In the frequency range \frac{1}{2}
doi_str_mv	10.1109/TAP.1965.1138551
format	Article
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In the past, all similar efforts have confined their attention to structures supporting a basic slow wave along the surface. In the frequency range \frac{1}{2}<a/\lambda<1 , such structures exhibit only one anomaly as compared to two for the fast-wave type. The reason for this difference lies in the fact that in the above frequency range only the n = - 1 space harmonic radiates away from the slow-wave structure while both the n = 0 and n = - 1 radiate from the other. In other words, the number of scattering resonances is exactly equal to the number of leaky waves supported by the structure under the same conditions of periodicity. The fast-wave structure analyzed here in detail consists of a parallel-plate waveguide perturbed by a series of periodic, parallel slits in the top plate. In the range a/\lambda<\frac{1}{2} , the plane-wave scattering problem is considered for both E and H mode polarizations, and the anomalies are found to manifest themselves as a rapid variation in the phase of the reflection coefficient. When a/\lambda<\frac{1}{2} there are no higher-order diffracted waves, and the magnitude of the reflection coefficient is, therefore, fixed at unity. The relative periodicity is next extended to the range \frac{1}{2}<a/\lambda<1 El, and the scattering problem considered for E mode polarization. The periodicity is now such that both the reflected wave and the first higher-order diffracted wave propagate transversely. Under such circumstances, it is convenient to use a scattering description for the fields, and the anomalies may then be observed as rapid variations in both the magnitude and phase of the scattering coefficients. The relation to the role played by the Rayleigh wavelength in the classical Wood's anomalies on optical reflection gratings is also considered.]]></description><identifier>ISSN: 0018-926X</identifier><identifier>ISSN: 0096-1973</identifier><identifier>EISSN: 1558-2221</identifier><identifier>DOI: 10.1109/TAP.1965.1138551</identifier><identifier>CODEN: IETPAK</identifier><language>eng</language><publisher>IEEE</publisher><subject>Diffraction ; Frequency ; Optical reflection ; Optical scattering ; Optical waveguides ; Periodic structures ; Polarization ; Rayleigh scattering ; Resonance ; Surface waves</subject><ispartof>I.R.E. transactions on antennas and propagation, 1965-11, Vol.13 (6), p.948-959</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c263t-537dde2031af7cc6bd4027d7c82e4f5e54e9dacf4a41e77dca2a6a9be3eb21fb3</citedby><cites>FETCH-LOGICAL-c263t-537dde2031af7cc6bd4027d7c82e4f5e54e9dacf4a41e77dca2a6a9be3eb21fb3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/1138551$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,776,780,792,27901,27902,54733</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/1138551$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Li, R.</creatorcontrib><creatorcontrib>Oliner, A.</creatorcontrib><title>Scattering resonances on a fast-wave structure</title><title>I.R.E. transactions on antennas and propagation</title><addtitle>TAP</addtitle><description><![CDATA[This investigation is concerned with the scattering resonances, or generalized Wood's anomalies, that are exhibited on a fast-wave structure. In the past, all similar efforts have confined their attention to structures supporting a basic slow wave along the surface. In the frequency range \frac{1}{2}<a/\lambda<1 , such structures exhibit only one anomaly as compared to two for the fast-wave type. The reason for this difference lies in the fact that in the above frequency range only the n = - 1 space harmonic radiates away from the slow-wave structure while both the n = 0 and n = - 1 radiate from the other. In other words, the number of scattering resonances is exactly equal to the number of leaky waves supported by the structure under the same conditions of periodicity. The fast-wave structure analyzed here in detail consists of a parallel-plate waveguide perturbed by a series of periodic, parallel slits in the top plate. In the range a/\lambda<\frac{1}{2} , the plane-wave scattering problem is considered for both E and H mode polarizations, and the anomalies are found to manifest themselves as a rapid variation in the phase of the reflection coefficient. When a/\lambda<\frac{1}{2} there are no higher-order diffracted waves, and the magnitude of the reflection coefficient is, therefore, fixed at unity. The relative periodicity is next extended to the range \frac{1}{2}<a/\lambda<1 El, and the scattering problem considered for E mode polarization. The periodicity is now such that both the reflected wave and the first higher-order diffracted wave propagate transversely. Under such circumstances, it is convenient to use a scattering description for the fields, and the anomalies may then be observed as rapid variations in both the magnitude and phase of the scattering coefficients. The relation to the role played by the Rayleigh wavelength in the classical Wood's anomalies on optical reflection gratings is also considered.]]></description><subject>Diffraction</subject><subject>Frequency</subject><subject>Optical reflection</subject><subject>Optical scattering</subject><subject>Optical waveguides</subject><subject>Periodic structures</subject><subject>Polarization</subject><subject>Rayleigh scattering</subject><subject>Resonance</subject><subject>Surface waves</subject><issn>0018-926X</issn><issn>0096-1973</issn><issn>1558-2221</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1965</creationdate><recordtype>article</recordtype><recordid>eNpFj0tLxDAUhYMoWEf3gpv-gdTcPPpYDoMvGFBwBHfhNrmREW0lySj-eztMwdXhcB7wMXYJogIQ3fVm-VRBV5vJqdYYOGIFGNNyKSUcs0IIaHkn69dTdpbS-2R1q3XBqmeHOVPcDm9lpDQOODhK5TiUWAZMmf_gN5Upx53Lu0jn7CTgR6KLWRfs5fZms7rn68e7h9VyzZ2sVeZGNd6TFAowNM7VvddCNr5xrSQdDBlNnUcXNGqgpvEOJdbY9aSolxB6tWDi8OvimFKkYL_i9hPjrwVh97x24rV7XjvzTpOrw2RLRP_1Of0DdP9SWw</recordid><startdate>196511</startdate><enddate>196511</enddate><creator>Li, R.</creator><creator>Oliner, A.</creator><general>IEEE</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>196511</creationdate><title>Scattering resonances on a fast-wave structure</title><author>Li, R. ; Oliner, A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c263t-537dde2031af7cc6bd4027d7c82e4f5e54e9dacf4a41e77dca2a6a9be3eb21fb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1965</creationdate><topic>Diffraction</topic><topic>Frequency</topic><topic>Optical reflection</topic><topic>Optical scattering</topic><topic>Optical waveguides</topic><topic>Periodic structures</topic><topic>Polarization</topic><topic>Rayleigh scattering</topic><topic>Resonance</topic><topic>Surface waves</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, R.</creatorcontrib><creatorcontrib>Oliner, A.</creatorcontrib><collection>CrossRef</collection><jtitle>I.R.E. transactions on antennas and propagation</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Li, R.</au><au>Oliner, A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Scattering resonances on a fast-wave structure</atitle><jtitle>I.R.E. transactions on antennas and propagation</jtitle><stitle>TAP</stitle><date>1965-11</date><risdate>1965</risdate><volume>13</volume><issue>6</issue><spage>948</spage><epage>959</epage><pages>948-959</pages><issn>0018-926X</issn><issn>0096-1973</issn><eissn>1558-2221</eissn><coden>IETPAK</coden><abstract><![CDATA[This investigation is concerned with the scattering resonances, or generalized Wood's anomalies, that are exhibited on a fast-wave structure. In the past, all similar efforts have confined their attention to structures supporting a basic slow wave along the surface. In the frequency range \frac{1}{2}<a/\lambda<1 , such structures exhibit only one anomaly as compared to two for the fast-wave type. The reason for this difference lies in the fact that in the above frequency range only the n = - 1 space harmonic radiates away from the slow-wave structure while both the n = 0 and n = - 1 radiate from the other. In other words, the number of scattering resonances is exactly equal to the number of leaky waves supported by the structure under the same conditions of periodicity. The fast-wave structure analyzed here in detail consists of a parallel-plate waveguide perturbed by a series of periodic, parallel slits in the top plate. In the range a/\lambda<\frac{1}{2} , the plane-wave scattering problem is considered for both E and H mode polarizations, and the anomalies are found to manifest themselves as a rapid variation in the phase of the reflection coefficient. When a/\lambda<\frac{1}{2} there are no higher-order diffracted waves, and the magnitude of the reflection coefficient is, therefore, fixed at unity. The relative periodicity is next extended to the range \frac{1}{2}<a/\lambda<1 El, and the scattering problem considered for E mode polarization. The periodicity is now such that both the reflected wave and the first higher-order diffracted wave propagate transversely. Under such circumstances, it is convenient to use a scattering description for the fields, and the anomalies may then be observed as rapid variations in both the magnitude and phase of the scattering coefficients. The relation to the role played by the Rayleigh wavelength in the classical Wood's anomalies on optical reflection gratings is also considered.]]></abstract><pub>IEEE</pub><doi>10.1109/TAP.1965.1138551</doi><tpages>12</tpages></addata></record>
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subjects	Diffraction Frequency Optical reflection Optical scattering Optical waveguides Periodic structures Polarization Rayleigh scattering Resonance Surface waves
title	Scattering resonances on a fast-wave structure
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