Pub Date : 1986-06-08DOI: 10.1109/APS.1986.1149690
T. Teshirogi, M. Tanaka, S. Ohmori
{"title":"Airborne phased array antenna for mobile satellite communications","authors":"T. Teshirogi, M. Tanaka, S. Ohmori","doi":"10.1109/APS.1986.1149690","DOIUrl":"https://doi.org/10.1109/APS.1986.1149690","url":null,"abstract":"","PeriodicalId":399329,"journal":{"name":"1986 Antennas and Propagation Society International Symposium","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128061487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1986-06-08DOI: 10.1109/APS.1986.1149755
P. Kildal, E. Lier, E. Olsen
{"title":"Efficient computer programs for study and optimization of blockage and diffraction in symmetrical reflector antennas","authors":"P. Kildal, E. Lier, E. Olsen","doi":"10.1109/APS.1986.1149755","DOIUrl":"https://doi.org/10.1109/APS.1986.1149755","url":null,"abstract":"","PeriodicalId":399329,"journal":{"name":"1986 Antennas and Propagation Society International Symposium","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130557838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1986-06-08DOI: 10.1109/APS.1986.1149597
J. Bull, L. Burgess, R. Flam, R. Peloso
{"title":"A broadband electrically small adaptive array","authors":"J. Bull, L. Burgess, R. Flam, R. Peloso","doi":"10.1109/APS.1986.1149597","DOIUrl":"https://doi.org/10.1109/APS.1986.1149597","url":null,"abstract":"","PeriodicalId":399329,"journal":{"name":"1986 Antennas and Propagation Society International Symposium","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121315776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1986-06-08DOI: 10.1109/APS.1986.1149631
S. Peng, S. Xu, F. Schwering
{"title":"Omni-directional periodic rod antenna","authors":"S. Peng, S. Xu, F. Schwering","doi":"10.1109/APS.1986.1149631","DOIUrl":"https://doi.org/10.1109/APS.1986.1149631","url":null,"abstract":"","PeriodicalId":399329,"journal":{"name":"1986 Antennas and Propagation Society International Symposium","volume":"274 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121209176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1986-06-08DOI: 10.1109/APS.1986.1149654
H. Shigesawa, M. Nishimura
{"title":"Surface current and receiving characteristics of reflector antennas","authors":"H. Shigesawa, M. Nishimura","doi":"10.1109/APS.1986.1149654","DOIUrl":"https://doi.org/10.1109/APS.1986.1149654","url":null,"abstract":"","PeriodicalId":399329,"journal":{"name":"1986 Antennas and Propagation Society International Symposium","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116837525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1986-06-08DOI: 10.1109/APS.1986.1149620
H. Viskum
Introduction. Althou h eometrical optics (GO) is an asymptotic theory describyears constituted the foundation for synthesis of reflector antennas. While dual ing electromagnetic #e& of infinitely high frequencies only, it has for several reflectors are usually shaped to produce a certain aperture distribution leading to a pencil beam type pattern with high gain or low side lobes, etc., single reflectors field. In either of the cases, any design must necessarily be ver!fied by a diffracmay be syntheslsed to generate shaped beams by using the GO directly in the far tion analysis, because of the GO assumption made In the synthesis. In this paper we will demonstrate a numerical method for solving the synthesis problem for single reflector antennas. The technique has been found to be superior to what has reviously been applied, in particular because it returns the solution on a form wlich lends itself easily t o diffraction analysis. This is accomplished by solvin Westcott's synthesis problem usin a collocation method and an expansion of t l e reflector surface in bicubicspline?unctions. The theory will be resumed very briefly, and we wiU then present some results figuration, a reflector shaped to provide full earth coverage from a low orbitting from applying the developed synthesis and analysis programs to a particular consatellite. Formulation of the synthesis. As stated previously, the synthesis part of this study is based upon the work of Westcott (1983). To formulate the problem we of the coordinate system. The half angle subtended by the reflector at the feed is consider the reflector shown in fig. 1, illuminated by a feed located at the centre €Ic. Given the feed power densit pattern I(e,+), we require the reflector t o G(B. a) inside the far-field cone of half angle Of. Westcott showed that by using transform this pattern into a far-fie& pattern with a power density distribution an appropriate parametrization of the reflectoer surface one can derive a highly non-linear boundary value problem, the solution of which overns the reflector surface. He also showed how the non-linear problem couqd be linearized and solved by repeated solution of linear second order partial differential equations (POE'S).
{"title":"Synthesis and analysis of single shaped reflector antennas","authors":"H. Viskum","doi":"10.1109/APS.1986.1149620","DOIUrl":"https://doi.org/10.1109/APS.1986.1149620","url":null,"abstract":"Introduction. Althou h eometrical optics (GO) is an asymptotic theory describyears constituted the foundation for synthesis of reflector antennas. While dual ing electromagnetic #e& of infinitely high frequencies only, it has for several reflectors are usually shaped to produce a certain aperture distribution leading to a pencil beam type pattern with high gain or low side lobes, etc., single reflectors field. In either of the cases, any design must necessarily be ver!fied by a diffracmay be syntheslsed to generate shaped beams by using the GO directly in the far tion analysis, because of the GO assumption made In the synthesis. In this paper we will demonstrate a numerical method for solving the synthesis problem for single reflector antennas. The technique has been found to be superior to what has reviously been applied, in particular because it returns the solution on a form wlich lends itself easily t o diffraction analysis. This is accomplished by solvin Westcott's synthesis problem usin a collocation method and an expansion of t l e reflector surface in bicubicspline?unctions. The theory will be resumed very briefly, and we wiU then present some results figuration, a reflector shaped to provide full earth coverage from a low orbitting from applying the developed synthesis and analysis programs to a particular consatellite. Formulation of the synthesis. As stated previously, the synthesis part of this study is based upon the work of Westcott (1983). To formulate the problem we of the coordinate system. The half angle subtended by the reflector at the feed is consider the reflector shown in fig. 1, illuminated by a feed located at the centre €Ic. Given the feed power densit pattern I(e,+), we require the reflector t o G(B. a) inside the far-field cone of half angle Of. Westcott showed that by using transform this pattern into a far-fie& pattern with a power density distribution an appropriate parametrization of the reflectoer surface one can derive a highly non-linear boundary value problem, the solution of which overns the reflector surface. He also showed how the non-linear problem couqd be linearized and solved by repeated solution of linear second order partial differential equations (POE'S).","PeriodicalId":399329,"journal":{"name":"1986 Antennas and Propagation Society International Symposium","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116844047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1986-06-08DOI: 10.1109/APS.1986.1149791
G. Shaw
{"title":"The effect of modal element position errors on the radiation pattern of large space-deplyable arrays","authors":"G. Shaw","doi":"10.1109/APS.1986.1149791","DOIUrl":"https://doi.org/10.1109/APS.1986.1149791","url":null,"abstract":"","PeriodicalId":399329,"journal":{"name":"1986 Antennas and Propagation Society International Symposium","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131441882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1986-06-08DOI: 10.1109/APS.1986.1149678
R. Dinger
{"title":"Spatial prefiltering of interference sources using subarrays of reactively steered adaptive arrays","authors":"R. Dinger","doi":"10.1109/APS.1986.1149678","DOIUrl":"https://doi.org/10.1109/APS.1986.1149678","url":null,"abstract":"","PeriodicalId":399329,"journal":{"name":"1986 Antennas and Propagation Society International Symposium","volume":"18 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128386029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1986-06-08DOI: 10.1109/APS.1986.1149618
G. D'Elia, G. Leone, R. Pierri
The synthesis of an aperture field radiating a prescribed radiation pattern has ben widely considered in the literature from both a theoretical and a numerical point of view. As known, a complete statement of the problem is strictly related to the choice of the functional of the radiated field to be minimized by the synthesis procedure . This functional allows the restriction of the set of all the possible solutions (which in general, at the expense of the superdirectivity gain, could reproduce as closely as desired.any prescribed pattern) to an appropriate subset. In this way, accounting for the physical realizability of the pattern,the synthesis problem, which is intrinsically an ill-posed problem, becomes a.stable one. When the functional to be minimized involves both amplitude and phase of the radiated field, the so called "field synthesis" problem is obtained. When only the amplitude of he radiated field is prescribed, the "power synthesis" problem is referred to. It is to be noted that, as shown by Voytovich €11, the freedom on the phase of the reconstructed pattern. in the power synthesis problem, leads to an improvement of the precision of the reconstruction of the prescribed amplitude. In the following the power synthesis problem is then considered.
{"title":"A numerical method in power synthesis of aperture antennas","authors":"G. D'Elia, G. Leone, R. Pierri","doi":"10.1109/APS.1986.1149618","DOIUrl":"https://doi.org/10.1109/APS.1986.1149618","url":null,"abstract":"The synthesis of an aperture field radiating a prescribed radiation pattern has ben widely considered in the literature from both a theoretical and a numerical point of view. As known, a complete statement of the problem is strictly related to the choice of the functional of the radiated field to be minimized by the synthesis procedure . This functional allows the restriction of the set of all the possible solutions (which in general, at the expense of the superdirectivity gain, could reproduce as closely as desired.any prescribed pattern) to an appropriate subset. In this way, accounting for the physical realizability of the pattern,the synthesis problem, which is intrinsically an ill-posed problem, becomes a.stable one. When the functional to be minimized involves both amplitude and phase of the radiated field, the so called \"field synthesis\" problem is obtained. When only the amplitude of he radiated field is prescribed, the \"power synthesis\" problem is referred to. It is to be noted that, as shown by Voytovich €11, the freedom on the phase of the reconstructed pattern. in the power synthesis problem, leads to an improvement of the precision of the reconstruction of the prescribed amplitude. In the following the power synthesis problem is then considered.","PeriodicalId":399329,"journal":{"name":"1986 Antennas and Propagation Society International Symposium","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133347243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1986-06-08DOI: 10.1109/APS.1986.1149735
A. Chang, R. Mittra
{"title":"A block-iteration approach to the problem of radar scattering from PEC and edge-loaded strips","authors":"A. Chang, R. Mittra","doi":"10.1109/APS.1986.1149735","DOIUrl":"https://doi.org/10.1109/APS.1986.1149735","url":null,"abstract":"","PeriodicalId":399329,"journal":{"name":"1986 Antennas and Propagation Society International Symposium","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123070429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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