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1976 6th European Microwave Conference最新文献

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Accurate Analysis and Design of Microstrip Interdigitated Couplers 微带交叉耦合耦合器的精确分析与设计
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332352
V. Rizzoli, A. Lipparini
{"title":"Accurate Analysis and Design of Microstrip Interdigitated Couplers","authors":"V. Rizzoli, A. Lipparini","doi":"10.1109/EUMA.1976.332352","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332352","url":null,"abstract":"The electrical behaviour of interdigitated directional couplers in an inhomogeneous dielectric medium is analyzed. Thanks to the symmetry properties of the device, the concepts of even and odd networks can be applied, leading to simple, closed-form expressions for coupler analysis which compare favourably with experimental results. The same model allows the most important parasitic effects to be understood and quantitatively described. It is shown that the discrepancies between computed and experimental data can be accurately explained in terms of the parasitics arising from junction discontinuities. Finally, design data for alumina-microstrip interdigitated couplers are presented in graphic form.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130588322","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
L-Band Antenna for Aircraft-To-Satellite Communications 飞机对卫星通信的l波段天线
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332288
Hormann Eberhard, Lovis Dietrich, Reitzig Rafael
{"title":"L-Band Antenna for Aircraft-To-Satellite Communications","authors":"Hormann Eberhard, Lovis Dietrich, Reitzig Rafael","doi":"10.1109/EUMA.1976.332288","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332288","url":null,"abstract":"An L-band aircraft transmit/receive antenna for the future AEROSAT system is proposed. It consists of two identical phase-scanned four-spiral antenna arrays mounted laterally on either side of the upper area of the aircraft body. The fan-beam is pointed in 10 different angular directions such as to satisfy the 4 dBi minimum gain coverage in the field-of-view 10° above horizon. The antenna mounts flush with the skin cutout between two stringers and frames in aircraft with transoceanic capability. The coverage performance of the antenna is demonstrated theoretically and experimentally.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133860890","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
Optics of Guided Waves 导波光学
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332302
R. Ulrich
{"title":"Optics of Guided Waves","authors":"R. Ulrich","doi":"10.1109/EUMA.1976.332302","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332302","url":null,"abstract":"In multimode waveguides, many classical optical effects continue to exist in modified form, and new optical effects are observed. The talk gives a review of some of these effects. The thin-film optical waveguide, a 2 dimensional (2D) propagation medium, may be considered as a versatile artificial dielectric. Trough local design of the guide, a variety of optical elements for this 2D optics can be constructed in analogy to known 3D optical elements. Periodic guides show pass- and stopbands and act as reflectors and filters, and they are used in modulators and deflectors. Warping a planar guide into the third dimension offers new possibilities of optics which do not exist in ordinary, 3D optics. Thick optical waveguides, with homogeneous or graded index distribution, can form real optical images. Of particular interest for applications in micro-optics is the formation of multiple images in homogeneous rectangular waveguides.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115154968","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
Microwave Heating of Malignant Mouse Tumors Encapsulated in a Dielectric Medium 介电介质包封小鼠恶性肿瘤的微波加热研究
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332260
J. E. Robinson, D. McCulloch, A. Cheung, E. Edelsack
{"title":"Microwave Heating of Malignant Mouse Tumors Encapsulated in a Dielectric Medium","authors":"J. E. Robinson, D. McCulloch, A. Cheung, E. Edelsack","doi":"10.1109/EUMA.1976.332260","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332260","url":null,"abstract":"A new technique for microwave (2450 MHz) heating of C3H mammary tumors is described. 1 cm tumors were encapsulated in 5 cm spheroids of a material dielectrically similar to biological tissues. When similarly heated, encapsulated tumor exhibited far more front-to-back temperature uniformity than unencapsulated tumors. Encapsulation also improved coupling of microwave heating fields. Tissue-simulating spheres were microwave-heated to the same temperatures in an anechoic range. Central temperature distributions were similar to those in the encapsulated tumors and agreed with theoretical predictions.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124183945","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: 5
New Transistor Operating for High Frequency and High Power 新型高频大功率晶体管
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332347
J. Nishizawa, Y. Kato
{"title":"New Transistor Operating for High Frequency and High Power","authors":"J. Nishizawa, Y. Kato","doi":"10.1109/EUMA.1976.332347","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332347","url":null,"abstract":"The main mechanism of operation of a new transistor which shows exponential I-V character, is based on the static induction and is called SIT (Static Induction Transistor). SIT is a promissing device also for higher frequency operation because of (1) short channel length, (2) lower gate series resistance, (3) small gate-source capacitance, (4) small gate-drain capacitance. Si SIT exhibits GHz operation: 200 MHz-40 watts, 1 GHz-5 watts, cut-off frequency is more than 2.0 GHz. Further developments of higher frequency and, higher power devices can be realized in distributed structure and travelling-wave operation of SIT. It will be soon possible to prepare an SIT which operates 100 watts out-put power at GHz frequencies.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121321777","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: 4
Effects of the Even and Odd Phase Velocity Separation on the Bandwidth Limitation of Nonuniform Line Microstrip Couplers 奇偶相速度分离对非均匀线微带耦合器带宽限制的影响
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332351
Y. Garault, J. Villotte, J. Rousset
{"title":"Effects of the Even and Odd Phase Velocity Separation on the Bandwidth Limitation of Nonuniform Line Microstrip Couplers","authors":"Y. Garault, J. Villotte, J. Rousset","doi":"10.1109/EUMA.1976.332351","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332351","url":null,"abstract":"Frequency response of nonuniform line micros trip couplers is given by using a second order theory applied for the even and odd signals which have unequal velocities. This condition leads to finite isolation which becomes worse as the velocity separation increases. A modified structure to equalize the even and odd mode phase velocities is analyzed by a finite difference method applied to hybrid waves.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115885694","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
Transient Fields of Radiating Structures 辐射结构的瞬态场
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332251
K. Langenberg, K. D. Rech
{"title":"Transient Fields of Radiating Structures","authors":"K. Langenberg, K. D. Rech","doi":"10.1109/EUMA.1976.332251","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332251","url":null,"abstract":"A rather simple and general analysis allows calculation of the exact transient near- and far-fields of thin loop antennas, thin linear antennas and apertures directly in the time domain without the knowledge of the time harmonic field. A numerical method (SEM) is used to derive the influence of the antenna radius of linear antennas on the transient near- and far-fields. Application of this tool leads to the transient currents and fields of two coupled parallel identical antennas.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123334653","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: 3
Coupling of Optical Fibres by Means of Volume Holograms 体全息技术在光纤耦合中的应用
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332314
M. P. Jordan, R. Kompfner, C. Sheppard, L. Solymar
{"title":"Coupling of Optical Fibres by Means of Volume Holograms","authors":"M. P. Jordan, R. Kompfner, C. Sheppard, L. Solymar","doi":"10.1109/EUMA.1976.332314","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332314","url":null,"abstract":"Two holographic couplers capable of coupling to each other two bundles of optical fibres are discussed. The analysis follows Kogelnik's method of deriving coupled differential equations inside the holographic medium. The arising partial differential equations are solved exactly for the transmission case whereas for the reflection case an approximation of somewhat more restricted validity is presented.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"174 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122956656","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
Modes in Overlayed Indiffused Optical Waveguides 叠加扩散光波导中的模式
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332326
M. Armenise, M. De Sario
{"title":"Modes in Overlayed Indiffused Optical Waveguides","authors":"M. Armenise, M. De Sario","doi":"10.1109/EUMA.1976.332326","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332326","url":null,"abstract":"The analysis of overlayed indiffused optical waveguides fabricated with ferroelectric materials (e g. LiNbO3 or LiTa03) to be employed in the realization of the hybrid integrated optic devices like modulators, switches, isolators, gyrators, optical read-out and so on is presented. In particular, the propagation constants and the mode mapping of the propagating TE and TM modes, the sensitivity of the effective refractive in dex to overlay thickness and diffusion constant, the single mode propagation criteria are derived when the substrate anisotropy is defined by a permettivity diagonal tensor. Then we have considered the effects induced by a modulating r.f. voltage that makes not null the permettivity tensor off-diagonal terms. At last, the Maxwell's equations in the diffused material region has been solved by a fast computer program based on the modified predictor-corrector method that allows a prefixed precision by varying the order and the stepsize of integration.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126291179","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
Performance Limits of Practical Low Noise, High Stability Gunn Oscillators 实用的低噪声、高稳定性Gunn振荡器的性能限制
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332294
B. Kerzar, P. Weissglas
{"title":"Performance Limits of Practical Low Noise, High Stability Gunn Oscillators","authors":"B. Kerzar, P. Weissglas","doi":"10.1109/EUMA.1976.332294","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332294","url":null,"abstract":"","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127473691","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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