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2010 Electromagnetic Compatibility Symposium - Melbourne最新文献

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Component performance associated with power/return plane bounce using board edge termination 使用电路板边缘终端与电源/返回平面弹跳相关的组件性能
2010 Electromagnetic Compatibility Symposium - Melbourne Pub Date : 2010-09-01 DOI: 10.1109/EMCSA.2010.6141517
M. Montrose
{"title":"Component performance associated with power/return plane bounce using board edge termination","authors":"M. Montrose","doi":"10.1109/EMCSA.2010.6141517","DOIUrl":"https://doi.org/10.1109/EMCSA.2010.6141517","url":null,"abstract":"This paper illustrates effects on digital components due to reflected EM waves created by different board edge termination methodologies. Depending on the physical location of a digital device, relative to the edge of the printed circuit board (PCB), either a voltage or return plane bounce may occur that exceeds operational margin levels of these devices","PeriodicalId":242783,"journal":{"name":"2010 Electromagnetic Compatibility Symposium - Melbourne","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127203475","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
Interference issues at co-located base stations and an adaptive cancellation solution 同址基站的干扰问题及自适应消除解决方案
2010 Electromagnetic Compatibility Symposium - Melbourne Pub Date : 2010-09-01 DOI: 10.1109/EMCSA.2010.6141511
Shabbir Ahmed, M. Faulkner
{"title":"Interference issues at co-located base stations and an adaptive cancellation solution","authors":"Shabbir Ahmed, M. Faulkner","doi":"10.1109/EMCSA.2010.6141511","DOIUrl":"https://doi.org/10.1109/EMCSA.2010.6141511","url":null,"abstract":"Wireless communication service providers are having to co-locate base stations on common sites, since little space is available to build new ones. Base station receivers have to receive weak desired signals in the presence of strong transmit signals from adjacent co-located transmitters; resulting in interference and desensitisation. The paper identifies the major causes of interference and illustrates the problems with some laboratory results. The paper then describes a system that will allow many wireless communication service providers to co-exist on one common site. The system uses a reference antenna to drive an adaptive cancellation loop that cancels the interfering signals. Simulations in Advanced Design Systems show that a cancellation of about 65dB is achievable.","PeriodicalId":242783,"journal":{"name":"2010 Electromagnetic Compatibility Symposium - Melbourne","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126404494","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
Radiated emissions and signal integrity of printed circuit board microstrips 印刷电路板微带的辐射发射和信号完整性
2010 Electromagnetic Compatibility Symposium - Melbourne Pub Date : 2010-09-01 DOI: 10.1109/EMCSA.2010.6141516
B. Wong, A. Cantoni
{"title":"Radiated emissions and signal integrity of printed circuit board microstrips","authors":"B. Wong, A. Cantoni","doi":"10.1109/EMCSA.2010.6141516","DOIUrl":"https://doi.org/10.1109/EMCSA.2010.6141516","url":null,"abstract":"EMC compliance is an important requirement for electronic systems. Radiation from printed circuit board traces can be a significant contributor to the EMC performance of electronic systems and needs to be taken into account in the design process. This is especially true in high speed digital system realised on one or more printed circuit boards. Another important consideration in the design of high speed digital systems is the signal integrity of interconnections. Signal integrity is managed mainly by selecting the type of termination and the transition time of the signal transferred over an interconnect. Empirical data suggests these factors also affect emission from the interconnections and cross-talk with other interconnections. This paper will provide models for two methods of termination for signal integrity management together with their associated radiated emission. A number of examples will be presented to illustrate the impact of the key parameters with the aim of identifying combinations that are good both from the signal integrity perspective as well electromagnetic compatibility.","PeriodicalId":242783,"journal":{"name":"2010 Electromagnetic Compatibility Symposium - Melbourne","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123854521","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
Efficient wireless broadband communications for rural Australia 澳大利亚农村高效无线宽带通信
2010 Electromagnetic Compatibility Symposium - Melbourne Pub Date : 2010-09-01 DOI: 10.1109/EMCSA.2010.6141510
N. L. Ratnayake, L. Atapattu, K. Ziri-Castro, D. Jayalath
{"title":"Efficient wireless broadband communications for rural Australia","authors":"N. L. Ratnayake, L. Atapattu, K. Ziri-Castro, D. Jayalath","doi":"10.1109/EMCSA.2010.6141510","DOIUrl":"https://doi.org/10.1109/EMCSA.2010.6141510","url":null,"abstract":"This paper discusses how internet services can be brought one step closer to the rural dispersed communities by improving wireless broadband communications in those areas. To accomplish this objective we describe the use of an innovative Multi-User-Single-Antenna for MIMO (MUSA-MIMO) technology using the spectrum currently allocated to analogue TV. MUSA-MIMO technology can be considered as a special case of MIMO technology, which is beneficial when provisioning reliable and high-speed communication channels. This paper describes channel modelling techniques to characterise the MUSA-MIMO system allowing an effective deployment of this technology. Particularly, it describes the development of a novel MUSA-MIMO channel model that takes into account temporal variations in the rural wireless environment. This can be considered as a novel approach tailor-maid to rural Australia for provisioning efficient wireless broadband communications.","PeriodicalId":242783,"journal":{"name":"2010 Electromagnetic Compatibility Symposium - Melbourne","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124615333","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
Characterization of an adaptive refinement algorithm for a meshless eigenvalue solver based on radial basis functions 基于径向基函数的无网格特征值求解器的自适应细化算法
2010 Electromagnetic Compatibility Symposium - Melbourne Pub Date : 2010-09-01 DOI: 10.1109/EMCSA.2010.6141514
T. Kaufmann, C. Engstrom, C. Fumeaux
{"title":"Characterization of an adaptive refinement algorithm for a meshless eigenvalue solver based on radial basis functions","authors":"T. Kaufmann, C. Engstrom, C. Fumeaux","doi":"10.1109/EMCSA.2010.6141514","DOIUrl":"https://doi.org/10.1109/EMCSA.2010.6141514","url":null,"abstract":"A meshless method based on a radial basis collocation approach is presented to calculate eigenvalues for the second-order wave equation. Instead of an explicit mesh topology only a node distribution is required to calculate electric fields, thus facilitating dynamic alteration of the discretization of an electromagnetic problem. An algorithm is presented that automatically adapts an initially very coarse discretization by adding points where higher accuracy is required by the physics of the problem. The algorithm is applied to a cylindrical cavity resonator and the rate of convergence is compared to uniform refinements with the radial basis method and to a regular grid-based finite-difference approach.","PeriodicalId":242783,"journal":{"name":"2010 Electromagnetic Compatibility Symposium - Melbourne","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122222803","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
Development of a movable RF screening wall for the DSTO Combined Mode Chamber DSTO组合模室可移动射频屏蔽壁的研制
2010 Electromagnetic Compatibility Symposium - Melbourne Pub Date : 2010-09-01 DOI: 10.1109/EMCSA.2010.6141512
Tan Doan, A. Walters, S. Thomson, C. Denton
{"title":"Development of a movable RF screening wall for the DSTO Combined Mode Chamber","authors":"Tan Doan, A. Walters, S. Thomson, C. Denton","doi":"10.1109/EMCSA.2010.6141512","DOIUrl":"https://doi.org/10.1109/EMCSA.2010.6141512","url":null,"abstract":"This paper describes the design and construction of the movable RF screening wall of the Combined Mode Chamber (CMC) at DSTO. The CMC provides an RF environment for whole aircraft High Intensity Radiated Field (HIRF) testing using one of the available three modes: Stirred Mode, Transverse Electromagnetic (TEM) and Direct Current Injection (DCI). The movable wall (6 m × 11 m) is an integral part of the CMC since it allows the easy transition between stirred mode and TEM/DCI testing techniques, minimising the need of relocating and reconfiguring the equipment-under-test (EUT) together with maintaining a secure environment for high value assets. Measurement of usable field volume in the Combined Mode Chamber, configured for TEM operation showed that the new screening wall provides the required level of isolation and hence improves the frequency continuity of the chamber.","PeriodicalId":242783,"journal":{"name":"2010 Electromagnetic Compatibility Symposium - Melbourne","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122736349","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
High-Q flexible spiral inductive coils 高q柔性螺旋电感线圈
2010 Electromagnetic Compatibility Symposium - Melbourne Pub Date : 2010-09-01 DOI: 10.1109/EMCSA.2010.6141509
D. Ng, Clive S. Boyd, S. Bai, G. Felic, M. Halpern, E. Skafidas
{"title":"High-Q flexible spiral inductive coils","authors":"D. Ng, Clive S. Boyd, S. Bai, G. Felic, M. Halpern, E. Skafidas","doi":"10.1109/EMCSA.2010.6141509","DOIUrl":"https://doi.org/10.1109/EMCSA.2010.6141509","url":null,"abstract":"A limitation on the optimal design of inductive coils for wireless power transfer is its physical size. We investigated the effect of varying width and spacing of conductive trace of spiral inductive coils in order to improve its quality factor and hence power transfer efficiency between two coils. These spiral coils have inner and outer diameter of 23 mm and 36.5 mm, respectively. We found that for the same number of turns, quality factor Q increases with an increase in spacing. This is attributed to proximity effects in adjacent conductive tracks of the coil. An increase of Q at 6.78 MHz by 121% from the minimum value was achieved by systematically varying the different topologies. We conclude that an optimal topology of choice for a spiral coil is larger spacing and smaller number of turns.","PeriodicalId":242783,"journal":{"name":"2010 Electromagnetic Compatibility Symposium - Melbourne","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126974712","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
EMC standards update for Australia 澳大利亚EMC标准更新
2010 Electromagnetic Compatibility Symposium - Melbourne Pub Date : 2010-09-01 DOI: 10.1109/EMCSA.2010.6141513
Petra Hansen
{"title":"EMC standards update for Australia","authors":"Petra Hansen","doi":"10.1109/EMCSA.2010.6141513","DOIUrl":"https://doi.org/10.1109/EMCSA.2010.6141513","url":null,"abstract":"As EMC standards are constantly being amended, keeping up to date with compliance requirements becomes an onerous task. This paper examines the latest versions of some of the better known EMC standards that apply in Australia currently (July 2010). This paper also provides some background information to the reader on the standards writing process and the regulations.","PeriodicalId":242783,"journal":{"name":"2010 Electromagnetic Compatibility Symposium - Melbourne","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123537542","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
Near-field phenomena in EMC applications 电磁兼容应用中的近场现象
2010 Electromagnetic Compatibility Symposium - Melbourne Pub Date : 2010-09-01 DOI: 10.1109/EMCSA.2010.6141515
A. Baghai-Wadji
{"title":"Near-field phenomena in EMC applications","authors":"A. Baghai-Wadji","doi":"10.1109/EMCSA.2010.6141515","DOIUrl":"https://doi.org/10.1109/EMCSA.2010.6141515","url":null,"abstract":"The application of the Boundary Element Method (BEM) to real-life electromagnetic field problems is generally plagued by numerical difficulties which can be traced back to the singularities of the involved dyadic Green's functions. As a rule, the calculation of the self-actions of the boundary elements (diagonal entries in the impedance matrix), and the interactions between the nearby-located boundary elements (near-diagonal entries of the impedance matrix), lead to numerically ill-posed slowly convergent Fourier-type integrals. This fact may severely limit the applicability of this otherwise almighty and elegant method. In this paper we show that numerically divergent integrals in the BEM applications can be evaluated in a way akin to the integration of generalized functions. Thereby, the involved exponentially decaying terms automatically emerge from our formulation, as opposed to the conventional schemes, where they are constructed rather arbitrarily in an ad hoc fashion. The proposed technique leads to a myriad of novel integral representations for Dirac's delta function in one- and two dimensions, which are presented here for the first time. Since the derived integral representations are associated with physically realizable problems, they are problem-tailored, and can be readily used. The paper concludes with the formulation of a number of challenging problems for future development along with hints to tackling them. The underlying ideas have been presented in great detail.","PeriodicalId":242783,"journal":{"name":"2010 Electromagnetic Compatibility Symposium - Melbourne","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130253355","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
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