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A Miniature 4 bit Octave Bandwidth Switched Filter Phase Shifter GaAs MMIC 微型4位倍频带宽开关滤波器移相器GaAs MMIC
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333774
A. Lane, M. Geen
{"title":"A Miniature 4 bit Octave Bandwidth Switched Filter Phase Shifter GaAs MMIC","authors":"A. Lane, M. Geen","doi":"10.1109/EUMA.1987.333774","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333774","url":null,"abstract":"This paper describes the design of a 4 bit phase shifter GaAs MMIC for operation over a 4-8 GHz bandwidth. Phase shifting is achieved by using GaAs MESFETs to switch the circuit transfer function from high pass to low pass and vice versa. In order to achieve small chip size and improved phase accuracy a novel component has been developed.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132801882","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
Multi-Level Proximity Coupled Transitions for Microwave and Millimeter Wave Applications 微波和毫米波应用的多级接近耦合跃迁
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333748
H. Yang, N. Alexopoulos
{"title":"Multi-Level Proximity Coupled Transitions for Microwave and Millimeter Wave Applications","authors":"H. Yang, N. Alexopoulos","doi":"10.1109/EUMA.1987.333748","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333748","url":null,"abstract":"The success of microwave and millimeter wave integrated circuits and monolithic arrays will largely depend on the development of highly accurate CAD methods. This article presents precise methodologies to model a variety of proximity coupled transitions which may be instrumental in the design of MIC and MMIC components. Two specific structures are investigated, which are a two-level microstrip-microstrip transition and a slot-coupled microstrip-microstrip transition. The analysis is based on solving coupled integral equations by method of moments. In the formulation, the Green's function for the grounded dielectric substrate is used, which takes into account all the radiation, surface wave and material effects. Meanwhile, mutual coupling due to dominant as well as higher order modes is automatically included in the method of moments solution. Numerical results are illustrated for the energy distribution as a function of offset, stub length or slot dimensions.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131355610","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
A Broadband FET Amplifier in Integrating Waveguide Technology with an E-Plane Microstrip Insert 集成e平面微带插片波导技术的宽带场效应管放大器
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333713
U. Meier, J. Hinken, W. Stenzl
{"title":"A Broadband FET Amplifier in Integrating Waveguide Technology with an E-Plane Microstrip Insert","authors":"U. Meier, J. Hinken, W. Stenzl","doi":"10.1109/EUMA.1987.333713","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333713","url":null,"abstract":"This paper describes a broadband low noise waveguide amplifier with a GaAs-FET, combining advantages of a planar technology with advantages of the integrating waveguide technology (INWATE). A new waveguide-to-microstrip transition allows easy assembling, small dimensions, and good electrical behaviour. The design of a single stage X-band amplifier results in a gain of 9 ± 1.3dB over a bandwidth of 3.3 GHz with an associated noise figure of less than 3dB.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131068674","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
Comparison Between Some Outage Prediction Methods for Microwave Digital Radio 几种微波数字对讲机故障预测方法的比较
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333660
U. Casiraghi, U. Mengali
{"title":"Comparison Between Some Outage Prediction Methods for Microwave Digital Radio","authors":"U. Casiraghi, U. Mengali","doi":"10.1109/EUMA.1987.333660","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333660","url":null,"abstract":"This paper compares some methods for predicting the outage time of microwave digital links. The first is based on a statistical channel model proposed by Rummler [1]-[2]. This is probably the most popular and is often referred to in the North American literature. The second has been proposed in [3]-[4] and is used by TELETTRA in evaluating digital radio performance. The third, due to Campbell and Coutts [5]-[6], is similar to the previous one and has been adopted by the Australian PTT.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115075160","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
A Reconfigurable Satellite Antenna System for Regional and Domestic Communications in Africa 非洲区域和国内通信的可重构卫星天线系统
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333783
F. Rispoli, S. Badessi, V. Costabile, R. Jørgensen, J. M. Montero, G. Crone
{"title":"A Reconfigurable Satellite Antenna System for Regional and Domestic Communications in Africa","authors":"F. Rispoli, S. Badessi, V. Costabile, R. Jørgensen, J. M. Montero, G. Crone","doi":"10.1109/EUMA.1987.333783","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333783","url":null,"abstract":"An antenna system is proposed for a C-band African communication satellite (AFSAT). The design consists of a pair of TX and RX antennas (4/6 GHz) based on dep1oyab1e dual gridded reflectors having diameters of 2.3 m and 1.4 m respectively with a total of 100 horns. The design of the antennas is compatible with the Eurostar bus and Ariane IV Spelda 10 launcher. Eight shaped beams are formed (2 UP-link, 6 DN-link) by using orthogonal linear polarizations. Reconfigurability is allowed for most of the 24 channels (40 MHz each). A 12 horn feed array system, based on light weight stepped horns and dual mode \"TEM line\" Beam Forming Network, has been developed and tested.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115661320","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
Dispersion Characteristics of Planar Structures on Biaxial Substrates and Layered Media: Application to Microstrip and Finline 双轴基底和层状介质上平面结构的色散特性:在微带和鳍线上的应用
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333749
F. Medina, H. Baudrand, M. Horna
{"title":"Dispersion Characteristics of Planar Structures on Biaxial Substrates and Layered Media: Application to Microstrip and Finline","authors":"F. Medina, H. Baudrand, M. Horna","doi":"10.1109/EUMA.1987.333749","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333749","url":null,"abstract":"In this work, we present a spectral domain formulation to calculate the propagation characteristics of generalised transmission planar structures for MIC and millimeter-wave applications. This formulation takes into account the presence of an arbitrary number of dielectric layers, involving biaxial anisotropic materials. Each layer is characterised by a \"spectral matrix\", from which the complete spectral dyadic Green's function is derived in a simple way. This one is used in conjunction with the conventional Ritz-Galerkin procedure to derive the dispersion equation of the structure.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"19 19","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114044649","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
A 93 GHz Circumferential Waveguide Bandpass Filter with Broad Bandwidth and Low Loss 一种宽带宽、低损耗的93 GHz环波导带通滤波器
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333650
W. Holpp
{"title":"A 93 GHz Circumferential Waveguide Bandpass Filter with Broad Bandwidth and Low Loss","authors":"W. Holpp","doi":"10.1109/EUMA.1987.333650","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333650","url":null,"abstract":"A new waveguide band-pass filter has been developed and realized for W-band. It differs significantly from traditional microwave filters at lower frequencies subsequent upon a very simple arrangement which is well-suited for milled splitblock waveguide design. The band-pass filter consists of a circumferential waveguide section with three rotationally symmetrical feeding arms. One of them includes a slide which shorts the waveguide ring and thus cuts it into two halves. Consequently, the layout represents two short- and one open-circuited resonance lines. A bandwidth of more than 10 per cent and an insertion loss of typically 1 dB have been measured at a center frequency of 93 GHz.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121046258","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
Electromagnetic Characterisation of Slots and their Interactions in an Array Environment 阵列环境下槽的电磁特性及其相互作用
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333665
G. Lodone
{"title":"Electromagnetic Characterisation of Slots and their Interactions in an Array Environment","authors":"G. Lodone","doi":"10.1109/EUMA.1987.333665","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333665","url":null,"abstract":"This work outlines the theoretical framework of a software tool aimed at analysing the behaviour of longitudinal waveguide slots as building blocks of a planar array. Some examples including an experimental assesment of the theory are also given. The final result is a computer code which is very useful in the design stage in order to substantially reduce experimental and development cost.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122669989","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
Ray Methods for Tapered Dielectric Antennas 锥形介质天线的射线法
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333709
E. Topuz
{"title":"Ray Methods for Tapered Dielectric Antennas","authors":"E. Topuz","doi":"10.1109/EUMA.1987.333709","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333709","url":null,"abstract":"Due to their simplicity and versatility ray methods are well suited to the analysis of tapered dielectric antennas wherein the availability of fast algorithms which can yield a sufficiently accurate representation of the surface field distribution on the antenna is of great importance. The accuracy of the ray optical calculations can be improved substantially without appreciably increasing complexity by modifying the ray paths with the inclusion of the lateral shifts on the boundaries. Here this modification is applied to the canonical problem presented by a two-dimensional homogeneous wedge. The interrelations between the laterally shifted ray representation and the recently developped exact integral representation for the wedge are investigated. The latter is utilized as a reference solution to reveal the analytical approximations implicit in the ray construction and to test the numerical accuracy and the ranges of validity of the ray optical calculations.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126111806","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
Scattering by a Periodic Rough Surface 周期性粗糙表面的散射
1987 17th European Microwave Conference Pub Date : 1987-10-01 DOI: 10.1109/EUMA.1987.333758
C. Eftimiu
{"title":"Scattering by a Periodic Rough Surface","authors":"C. Eftimiu","doi":"10.1109/EUMA.1987.333758","DOIUrl":"https://doi.org/10.1109/EUMA.1987.333758","url":null,"abstract":"A formulation of the scattering of electromagnetic waves by a rough conducting surface which is periodic on the average is presented. The periodicity is treated exactly, and the roughness is treated by perturbation theory. The second-order correction due to roughness is determined for the far-field radiation modes.","PeriodicalId":208245,"journal":{"name":"1987 17th European Microwave Conference","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126153681","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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