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Recent activities in antennas and propagation in Japan 最近在日本的天线和传播活动
IEEE Antennas and Propagation Society Newsletter Pub Date : 1988-12-01 DOI: 10.1109/map.1988.6086093
T. Katagi, Matsuichi Yamaaiz
{"title":"Recent activities in antennas and propagation in Japan","authors":"T. Katagi, Matsuichi Yamaaiz","doi":"10.1109/map.1988.6086093","DOIUrl":"https://doi.org/10.1109/map.1988.6086093","url":null,"abstract":"The fourth International Symposium on Antennas and Propagation (ISAP'89) will be held in Japan next Japanese activities in fields, several topics summer. For the purpose of introducing recent Japanese activities in these fields, several topics are described here. They are mainly represented in the Technical Community on Antennas and Propagation of IEICE, that is, the Institute of Electronics, Information and Communication Engineers. The topics presented here are limited, and man other works have also been actively carried out. The radio telescopes at Nobeyama Radio Observatory are included in the technical tour of ISAP'89.","PeriodicalId":377321,"journal":{"name":"IEEE Antennas and Propagation Society Newsletter","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121435730","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}
引用次数: 1
Electromagnetic chirality and its applications 电磁手性及其应用
IEEE Antennas and Propagation Society Newsletter Pub Date : 1988-10-01 DOI: 10.1109/MAP.1988.6086107
N. Engheta, D. Jaggard
{"title":"Electromagnetic chirality and its applications","authors":"N. Engheta, D. Jaggard","doi":"10.1109/MAP.1988.6086107","DOIUrl":"https://doi.org/10.1109/MAP.1988.6086107","url":null,"abstract":"Chirality is a geometric notion which refers to the handedness of an object. A chiral object is, by definition, a body that cannot be brought into congruence with its mirror image by translation and rotation. In other words, such a body lacks bilateral symmetry, and cannot be superposed on its mirror image. An object of this sort has the property of handedness and is said to be either right-handed or left-handed. An object that is not chiral is achiral. Some chiral objects occur in two versions relatedto each other as a chiral object and its mirror image. Objects so related are said to be enanriomorphs of each other. If a chiral object is found to be lefthanded, its enantiomorph is right-handed, and vice versa. Two examples of chiral objects, the Mbbius strip and the irregular tetrahedron, and their enantiomorphs are shown in Fig. 1. Note that these objects and their mirror images are incongruent","PeriodicalId":377321,"journal":{"name":"IEEE Antennas and Propagation Society Newsletter","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130192405","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}
引用次数: 181
Electromagnetic methods in adplied geophysics: Vol, i. theory, edited by Misac N. Nabighi [Book review] 应用地球物理学中的电磁方法:第一卷，理论，Misac N. Nabighi编辑[书评]
IEEE Antennas and Propagation Society Newsletter Pub Date : 1988-10-01 DOI: 10.1109/MAP.1988.6086112
A. Glisson
{"title":"Electromagnetic methods in adplied geophysics: Vol, i. theory, edited by Misac N. Nabighi [Book review]","authors":"A. Glisson","doi":"10.1109/MAP.1988.6086112","DOIUrl":"https://doi.org/10.1109/MAP.1988.6086112","url":null,"abstract":"","PeriodicalId":377321,"journal":{"name":"IEEE Antennas and Propagation Society Newsletter","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117241177","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}
引用次数: 0
Radio propagation research at the University of Texas at Austin 德克萨斯大学奥斯汀分校的无线电传播研究
IEEE Antennas and Propagation Society Newsletter Pub Date : 1988-10-01 DOI: 10.1109/MAP.1988.6086109
A. Straiton
{"title":"Radio propagation research at the University of Texas at Austin","authors":"A. Straiton","doi":"10.1109/MAP.1988.6086109","DOIUrl":"https://doi.org/10.1109/MAP.1988.6086109","url":null,"abstract":"The greatest reward that I received from my work in the field of Antennas and Propagation was the association with hundredosf wonderful people. This included employees of the Electrical Engi- Texas at Austin in all capacities - faculty, proneering Research Laboratory of The University of fessional and staff members, technicians and support personnel, and many graduate students. It also provided contacts which frequently turned into friendships with luminaries from other institutions and government agencies","PeriodicalId":377321,"journal":{"name":"IEEE Antennas and Propagation Society Newsletter","volume":"59 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132089410","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}
引用次数: 0
Reflections on the influence of Wrld War II on e lectrical engineering education in the United States, 1925- 1955 第二次世界大战对美国电子工程教育影响的思考(1925- 1955)
IEEE Antennas and Propagation Society Newsletter Pub Date : 1988-08-01 DOI: 10.1109/MAP.1988.6079091
R. Kline
{"title":"Reflections on the influence of Wrld War II on e lectrical engineering education in the United States, 1925- 1955","authors":"R. Kline","doi":"10.1109/MAP.1988.6079091","DOIUrl":"https://doi.org/10.1109/MAP.1988.6079091","url":null,"abstract":"There is little doubt that World War II reshaped electrical engineering education in the United States. Having watched physicists outperform electrical engineers in wartime radar laboratories, prominent educators overhauled the EE curriculum by introducing more mathematics, science, and electronics after the war. A leader of this movement was Frederick E. Terman, head of the Harvard Radio Research Laboratory (RRL) during the war and later Dean of the School of Engineering at Stanford University. Terman believed that the increased government and military sponsorship of research after the war raised the \"intellectual level of electrical engineering on the campus.\" Recent studies have supported Terman's assessment that the large infusion of research funds through such post-war agencies as the ONR, NSF, and the Joint Services Electronics Program played a key role in creating the present EE research and graduate education programs in the United States [l].","PeriodicalId":377321,"journal":{"name":"IEEE Antennas and Propagation Society Newsletter","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127228248","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}
引用次数: 0
Small Antennas, by K. Fugimoto, A. Henderson, K. Hirasawa, and J.R. Jame [Book Review] 《小天线》，作者:K.格弗雷莫托、A.亨德森、K.平泽和J.R.詹姆斯[书评]
IEEE Antennas and Propagation Society Newsletter Pub Date : 1988-08-01 DOI: 10.1109/MAP.1988.6079097
S. Govind
{"title":"Small Antennas, by K. Fugimoto, A. Henderson, K. Hirasawa, and J.R. Jame [Book Review]","authors":"S. Govind","doi":"10.1109/MAP.1988.6079097","DOIUrl":"https://doi.org/10.1109/MAP.1988.6079097","url":null,"abstract":"","PeriodicalId":377321,"journal":{"name":"IEEE Antennas and Propagation Society Newsletter","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133056973","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}
引用次数: 0
Progress in identification of electromagnetic systems 电磁系统辨识的进展
IEEE Antennas and Propagation Society Newsletter Pub Date : 1988-08-01 DOI: 10.1109/MAP.1988.6079090
D. Dudley
{"title":"Progress in identification of electromagnetic systems","authors":"D. Dudley","doi":"10.1109/MAP.1988.6079090","DOIUrl":"https://doi.org/10.1109/MAP.1988.6079090","url":null,"abstract":"We review progress in identification of electromagnetic systems. We introduce the basic ideas with a brief discussion of forward and inverse problems. We next give some history, emphasizing the basic issues involved. We follow with some results and an assessment of present capabilities and limitations. We conclude with some recommendations for future work in electromagnetic identification","PeriodicalId":377321,"journal":{"name":"IEEE Antennas and Propagation Society Newsletter","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127799761","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}
引用次数: 28
Radar: From Hertz to the 21st century 雷达:从赫兹到21世纪
IEEE Antennas and Propagation Society Newsletter Pub Date : 1988-06-06 DOI: 10.1109/MAP.1988.6086108
M. Skolnik
{"title":"Radar: From Hertz to the 21st century","authors":"M. Skolnik","doi":"10.1109/MAP.1988.6086108","DOIUrl":"https://doi.org/10.1109/MAP.1988.6086108","url":null,"abstract":"This is a review of radar from its initial beginnings to its possible directions in the future. The key events which led to new capabilities in radar, its major applications, and the current trends in its technology are mentioned. The particular applications of ground-probing radar, doppler radar for detection of dangerous weather, and HF over-the-horizon radar are cited as specific examples of current interest.","PeriodicalId":377321,"journal":{"name":"IEEE Antennas and Propagation Society Newsletter","volume":"305 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122743078","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}
引用次数: 2
Criticisms of the Woodward-Lawson method 对伍德沃德-劳森方法的批评
IEEE Antennas and Propagation Society Newsletter Pub Date : 1988-06-01 DOI: 10.1109/MAP.1988.6079081
R. Elliott
{"title":"Criticisms of the Woodward-Lawson method","authors":"R. Elliott","doi":"10.1109/MAP.1988.6079081","DOIUrl":"https://doi.org/10.1109/MAP.1988.6079081","url":null,"abstract":"An antenna pattern synthesis technique, applicable to equispaced linear arrays and continuous 1 ine sources, was first introduced by Woodward [l] in 1946 and then elaborated in collaboration with Lawson [21 in 1948. Known as the Woodward-Lawson method, it has been used to synthesize shaped beam patterns. Simply stated, it consists of the superposition of a family of excitations, each with au niform amplitude distribution and a uniform progressive phase distribution. The first partial excitation produces a pattern with a main beam s iadnde lobes that tail off from a level of -13.5 dB; the placement of the main beam is governed by the value of the uniform progressive phase. The second partial excitation does likewise, but its uniform progressive phase is adjusted so that its main beam peak coincides with an innermost null of the first pattern, etc. This scheme results in the filling in of a sequence of nulls in the first pattern; the amount of null-filling i s governed by the relative amplitudes of the partial excitations.","PeriodicalId":377321,"journal":{"name":"IEEE Antennas and Propagation Society Newsletter","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131888467","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}
引用次数: 9
Research on spiral and helical antennas at Hosei University 法政大学的螺旋和螺旋天线研究
IEEE Antennas and Propagation Society Newsletter Pub Date : 1988-06-01 DOI: 10.1109/MAP.1988.6079077
B. James
{"title":"Research on spiral and helical antennas at Hosei University","authors":"B. James","doi":"10.1109/MAP.1988.6079077","DOIUrl":"https://doi.org/10.1109/MAP.1988.6079077","url":null,"abstract":"This Symposium was held at the University of New South Wales in Sydney, Australia, January 25-29, 1988. Previous symposia in this series were held in 1983 and 1985. The intention has been to bring together the small bduitv erse community of physicists and engineers working in the fields of millimeter and submillimeter waves in Australia. The wavelength boundaries of this region of the spectrum have been interpreted liberally, to the extent that some participants interests might be described more accurately as infrared or microwaves.","PeriodicalId":377321,"journal":{"name":"IEEE Antennas and Propagation Society Newsletter","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114200443","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}
引用次数: 0
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