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1988 18th European Microwave Conference最新文献

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Time-Domain Method of Lines Applied to Finned Waveguide 应用于翅片波导的时域线法
1988 18th European Microwave Conference Pub Date : 1988-12-01 DOI: 10.1109/EUMA.1988.333955
S. Nam, H. Ling, T. Itoh
{"title":"Time-Domain Method of Lines Applied to Finned Waveguide","authors":"S. Nam, H. Ling, T. Itoh","doi":"10.1109/EUMA.1988.333955","DOIUrl":"https://doi.org/10.1109/EUMA.1988.333955","url":null,"abstract":"A new time-domain method (time-domain method of lines) for the analysis of planar guided wave propagation and scattering is developed for structures which contain metallic strips at the dielectric interface boundary. A simple numerical example is presented as a demonstration of the new method and its validity is shown by comparison with other data.","PeriodicalId":161582,"journal":{"name":"1988 18th European Microwave Conference","volume":"1 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":"130990862","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
Modeling of Radiometric Signals for Medical Applications 医学应用放射信号建模
1988 18th European Microwave Conference Pub Date : 1988-10-01 DOI: 10.1109/EUMA.1988.333882
A. Mamouni, P. Gelin, Y. Leroy
{"title":"Modeling of Radiometric Signals for Medical Applications","authors":"A. Mamouni, P. Gelin, Y. Leroy","doi":"10.1109/EUMA.1988.333882","DOIUrl":"https://doi.org/10.1109/EUMA.1988.333882","url":null,"abstract":"The radiometric data, obtained in medical applications, have to be quantitatively interpreted. A necessary first step, with this aim in mind, is the definition of an accurate method of computation of the radiometric signals for three dimensionnal thermal structures. We define such a tool and demonstrate its feasibility in classical and correlation radiometry.","PeriodicalId":161582,"journal":{"name":"1988 18th European Microwave Conference","volume":"68 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":"124412826","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
Broadband Low-Noise Monolithic GaAs Microwave Amplifiers with Very Low Power Consumption 低功耗宽带低噪声单片砷化镓微波放大器
1988 18th European Microwave Conference Pub Date : 1988-10-01 DOI: 10.1109/EUMA.1988.333870
G. Donzelli, M. Pillan, L. Scopelliti, E. Bastida
{"title":"Broadband Low-Noise Monolithic GaAs Microwave Amplifiers with Very Low Power Consumption","authors":"G. Donzelli, M. Pillan, L. Scopelliti, E. Bastida","doi":"10.1109/EUMA.1988.333870","DOIUrl":"https://doi.org/10.1109/EUMA.1988.333870","url":null,"abstract":"A new general design phylosophy for producing cost-effective GaAs MMIC's is described. As a particular application, the design and the test results for wide-band and low-noise amplifier chips with an extremaly low power consumption are reported and discussed.","PeriodicalId":161582,"journal":{"name":"1988 18th European Microwave Conference","volume":"15 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":"125239592","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
Up/Down Mixers for Satellite Communications Utilizing Rat-Race Circuits 利用老鼠赛跑电路的卫星通信上/下混频器
1988 18th European Microwave Conference Pub Date : 1988-10-01 DOI: 10.1109/EUMA.1988.333900
M. Hasegawa, Kouei Misaizu, H. Endo, M. Makimoto
{"title":"Up/Down Mixers for Satellite Communications Utilizing Rat-Race Circuits","authors":"M. Hasegawa, Kouei Misaizu, H. Endo, M. Makimoto","doi":"10.1109/EUMA.1988.333900","DOIUrl":"https://doi.org/10.1109/EUMA.1988.333900","url":null,"abstract":"A new design for up and down mixers, utilizing rat-race circuits for microwave-band transmitters and receivers, has been introduced. These MIC mixers provide the advantages of small size, low cost and ease of producibility. Additionally, structural and design considerations, and experimental results have also revealed excellent performance characteristics suited to satellite communication applications.","PeriodicalId":161582,"journal":{"name":"1988 18th European Microwave Conference","volume":"52 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":"116770054","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
Broadband Multimode Feed for Monopulse Tracking Antenna 单脉冲跟踪天线宽带多模馈电
1988 18th European Microwave Conference Pub Date : 1988-10-01 DOI: 10.1109/EUMA.1988.333862
U. Lidvall, M. Persson, G. Larsson
{"title":"Broadband Multimode Feed for Monopulse Tracking Antenna","authors":"U. Lidvall, M. Persson, G. Larsson","doi":"10.1109/EUMA.1988.333862","DOIUrl":"https://doi.org/10.1109/EUMA.1988.333862","url":null,"abstract":"A wide band monopulse feed for use in tracking antennas has been developed. Good performance has been achieved, over a frequency band of more than 15 per cent, in sum as well as difference channels in all planes by the use of multimode techniques.","PeriodicalId":161582,"journal":{"name":"1988 18th European Microwave Conference","volume":"3 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":"116817426","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
Operation and Application of an Open Resonator for Fast Automated Wideband Measurement Throughout the Frequency Interval 8-12 GHz 8- 12ghz频率区间快速自动化宽带测量开式谐振器的工作与应用
1988 18th European Microwave Conference Pub Date : 1988-10-01 DOI: 10.1109/EUMA.1988.333880
L. Auchterlonie, A. Hume
{"title":"Operation and Application of an Open Resonator for Fast Automated Wideband Measurement Throughout the Frequency Interval 8-12 GHz","authors":"L. Auchterlonie, A. Hume","doi":"10.1109/EUMA.1988.333880","DOIUrl":"https://doi.org/10.1109/EUMA.1988.333880","url":null,"abstract":"A computer controlled large open resonator is operated over the band with 8-12 GHz. The design, control and performance of the resonator is described. Examples of measurements of extinction cross section are given for several cases where the scattering behaviour varies with frequency and time.","PeriodicalId":161582,"journal":{"name":"1988 18th European Microwave Conference","volume":"51 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":"127276332","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
Accurate Design of Ferrite Toroid Phase Shifters - Theoretical and Experimental Results 铁氧体环形移相器的精确设计——理论与实验结果
1988 18th European Microwave Conference Pub Date : 1988-10-01 DOI: 10.1109/EUMA.1988.333845
J. Svedin, B. Carlegrim, S. Hagelin
{"title":"Accurate Design of Ferrite Toroid Phase Shifters - Theoretical and Experimental Results","authors":"J. Svedin, B. Carlegrim, S. Hagelin","doi":"10.1109/EUMA.1988.333845","DOIUrl":"https://doi.org/10.1109/EUMA.1988.333845","url":null,"abstract":"The dual ferrite toroid latched phase shifter (VPS) is analyzed using the finite element method (FEM) to predict useful design properties as differential phase shift and the dispersion of higher order modes. In this paper, the static magnetization of the ferrite was approximated using a simple empirical model, that was found to yield good results. Theoretical and experimental results are compared as functions of frequency (8-14 GHz), temperature (-50°C - +l00°C) and ferrite material (YIG, MgMn and LiTi). The FEM results are also compared with theoretical results from the less rigorous multiple slab model.","PeriodicalId":161582,"journal":{"name":"1988 18th European Microwave Conference","volume":"13 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":"122042970","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
A Low Noise UHF Surface Transverse Wave Oscillator 一种低噪声超高频表面横波振荡器
1988 18th European Microwave Conference Pub Date : 1988-10-01 DOI: 10.1109/EUMA.1988.333828
L. Eichinger, B. Fleischmann, J. Hausner, P. Russer, R. Weigel
{"title":"A Low Noise UHF Surface Transverse Wave Oscillator","authors":"L. Eichinger, B. Fleischmann, J. Hausner, P. Russer, R. Weigel","doi":"10.1109/EUMA.1988.333828","DOIUrl":"https://doi.org/10.1109/EUMA.1988.333828","url":null,"abstract":"A hybrid oscillator at 1.98 GHz has been developed using acoustic surface transverse wave (STW) delay lines operating at the third harmonic as the frequency controlling element. The STW delay lines were fabricated on 37.5° rotated Y-cut quartz substrates with a photolithographic technique. The Q value and the untuned insertion loss of the STW filters were 3400 and 21 dB, respectively. The phase noise and temperature stability of the oscillator were characterized. At a power output of 6.5 dBm a single sideband phase noise to carrier ratio of -100 dBc/Hz at 1 kHz and -70 dBc/Hz at 100 Hz was attained.","PeriodicalId":161582,"journal":{"name":"1988 18th European Microwave Conference","volume":"26 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":"129851785","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
An Impedance Transforming Transistor Mounting Structure for Amplifiers in Fin-Line Technique 鳍线技术放大器的阻抗变换晶体管安装结构
1988 18th European Microwave Conference Pub Date : 1988-10-01 DOI: 10.1109/EUMA.1988.333819
U. Meier, J. Hinken, H. Fischer
{"title":"An Impedance Transforming Transistor Mounting Structure for Amplifiers in Fin-Line Technique","authors":"U. Meier, J. Hinken, H. Fischer","doi":"10.1109/EUMA.1988.333819","DOIUrl":"https://doi.org/10.1109/EUMA.1988.333819","url":null,"abstract":"A novel impedance transforming transition between a fin-line and an unbalanced line was used to develop a new mounting structure to characterize FETs in fin-line technique. In the frequency range of 9...12 GHz measured S-parameters are compared with data sheet values. Based on these data the rigorous design of a low noise amplifier with matching circuits in fin-line technique is presented avoiding the necessity of tuning. The measured noise figure at 10 GHz was less than 2 dB with an associated gain of 9.7 dB. Because the mounting structure can be scaled to higher frequencies, transistors can utilize the superior properties of fin-lines in the higher mm-wave range.","PeriodicalId":161582,"journal":{"name":"1988 18th European Microwave Conference","volume":"56 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":"130410364","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
Multi-Layer Microstrip Array Antenna 多层微带阵列天线
1988 18th European Microwave Conference Pub Date : 1988-10-01 DOI: 10.1109/EUMA.1988.333948
A. Derneryd, T. Lorentzon
{"title":"Multi-Layer Microstrip Array Antenna","authors":"A. Derneryd, T. Lorentzon","doi":"10.1109/EUMA.1988.333948","DOIUrl":"https://doi.org/10.1109/EUMA.1988.333948","url":null,"abstract":"The bandwidth behaviour of a pair of stacked rectangular patches is investigated experimentally. The return loss is measured as functions of the size of the upper patch and the separation of the patches. The band-width of the optimized stacked antenna is twice as broad as the bandwidth of the single patch with equal height. At the same time the cross polarisation level is much lower. The stacked microstrip patch is used in an L-band planar array antenna for IFF applications. The aperture consists of two rows of six elements each. A corporate feed network in stripline is mounted as an integrated part behind the antenna aperture. A low density foam is used as a dielectric to obtain a light weight design. Sum and difference radiation patterns are generated. The difference sidelobe level is greater than the sum level to be able to suppress replies outside the sum main beam.","PeriodicalId":161582,"journal":{"name":"1988 18th European Microwave Conference","volume":"1 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":"129075729","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
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