Scheduled System Maintenance:
On May 6th, system maintenance will take place from 8:00 AM - 12:00 PM ET (12:00 - 16:00 UTC). During this time, there may be intermittent impact on performance. We apologize for the inconvenience.
By Topic

ElectroMagnetic Interference and Compatibility (INCEMIC), 2006 Proceedings of the 9th International Conference on

Date 23-24 Feb. 2006

Filter Results

Displaying Results 1 - 25 of 128
  • [Front cover]

    Publication Year: 2006 , Page(s): c1
    Save to Project icon | PDF file iconPDF (1517 KB)  
    Freely Available from IEEE
  • Message from SEMCE(I) Chairman

    Publication Year: 2006 , Page(s): iii
    Save to Project icon | Request Permissions | PDF file iconPDF (411 KB) |  | HTML iconHTML  
    Freely Available from IEEE
  • [Blank page]

    Publication Year: 2006 , Page(s): 1
    Save to Project icon | PDF file iconPDF (65 KB)  
    Freely Available from IEEE
  • From the convener's desk

    Publication Year: 2006 , Page(s): v - vi
    Save to Project icon | Request Permissions | PDF file iconPDF (424 KB) |  | HTML iconHTML  
    Freely Available from IEEE
  • Executive Committees

    Publication Year: 2006 , Page(s): vii - viii
    Save to Project icon | PDF file iconPDF (407 KB)  
    Freely Available from IEEE
  • INCEMIC 2006 Steering Committee

    Publication Year: 2006 , Page(s): ix
    Save to Project icon | PDF file iconPDF (202 KB)  
    Freely Available from IEEE
  • Co-sponsors

    Publication Year: 2006 , Page(s): x
    Save to Project icon | PDF file iconPDF (246 KB)  
    Freely Available from IEEE
  • Technical contents

    Publication Year: 2006 , Page(s): xi - xx
    Save to Project icon | Request Permissions | PDF file iconPDF (429 KB)  
    Freely Available from IEEE
  • Thermosetting polymer composites for EMI shielding applications

    Publication Year: 2006 , Page(s): 1 - 6
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (578 KB) |  | HTML iconHTML  

    Efforts have been made towards developing lightweight EMI shielding thermosetting composites materials using room temperature curing epoxy novalac cyclo aliphatic amine hardener system. Average Shielding efficiency (SE) values (100 KHz to 1 GHz) of above 50 dB have been obtained for Carbon Fibre Reinforced Polymeric (CFRP) composite laminates, with variants of glass fabric and aluminium mesh included along with. Sandwich constructions were also fabricated using syntactic foams as the core materials while the skins were designed as combinations of carbon, glass and aluminium. SE values of such constructions made out of conducting skins and both insulating as well as conducting cores were measured over the same frequency range (100 KHZ to 1 GHz). Carbon skin sandwiches have resulted in an average SE of 40-45 dB or above depending upon the nature of the core, whereas, alumesh/ GFRP skin sandwiches have measured an average SE of well over 60 dB. The viscoelastic properties of these composites were also evaluated by Dynamic Mechanical Analysis (DMA) in order to assess their mechanical properties as well as to determine their maximum use temperatures. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Spectrum management and EMC design techniques of electronics system

    Publication Year: 2006 , Page(s): 7 - 10
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (416 KB) |  | HTML iconHTML  

    Planning, co-ordination and managing the electromagnetic spectrum through operational, engineering and administrative procedure, with an objective of enabling electronic systems to perform their function in intended environment is the need of the hour. This requires the parameters of immunity and emissions to be considered from the basic design of an electronic system such that the system is immune to the field created by its neighbors and at the same time the system must limit its emissions at a level that is compatible with the neighboring system. This paper presents the primary EMC design techniques that includes electromagnetic shielding, circuit filtering, good grounding and bonding to cater for spatial attenuation. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An Aperture Attenuation modeling program to determine shielding effectiveness of printed circuit board shields and other enclosures

    Publication Year: 2006 , Page(s): 11 - 14
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (552 KB) |  | HTML iconHTML  

    This paper is intended to present a spread sheet modeling program (Microsoft Excel format) for the calculation of shielding effectiveness resulting from apertures (holes and/or slots) in printed circuit board shields or enclosures. The program provides an estimate of the resultant shielding effectiveness due to ventilation holes needed for heat management or folded metal that form slots on the sides of a board level shield. Graphing of the resultant calculated data is plotted as shielding effectiveness (dB) vs. Frequency (MHz). The graph is located at the right side of the data entry spreadsheet section. As for shielding materials, this program may approximate shielding effectiveness and be utilized for other flat shields such as screens and perforated panels. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Reduction of Ground Bounce Noise in high speed printed circuit board

    Publication Year: 2006 , Page(s): 15 - 18
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (769 KB) |  | HTML iconHTML  

    This paper describes the suppression of Ground Bounce Noise (GBN) or Simultaneous Switching Noise (SSN) in high Speed printed circuit board (PCB). The effectiveness of the slot length in the common ground / power plane in the PCB for the coupling noise is simulated using Ansoft-HFSS (High Frequency Structure Simulator) package. The position of feed point between the two planes optimized was presented. A simple configuration was devised to reduce the coupling noise in the frequency range of interest. Better than -50 dB coupling is achieved using this optimized structure in the frequency band of 0.48-1.83GHz. The various stages of design optimization of the PCB is discussed for the new structure keeping in view of practical solution to achieve low coupling in the high speed PCB. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • PCB layout design for EMI/EMC compliance

    Publication Year: 2006 , Page(s): 19 - 24
    Cited by:  Papers (1)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (433 KB) |  | HTML iconHTML  

    This paper is based on the background studies and experiences in identification and implementation of the fundamental design techniques for making a PCB layout that needs a high degree of compliance for EMI/EMC. It suggests the use of techniques for considering PCBs configuration, Interplane coupling, Grounding methods, use of Bypassing and Decoupling capacitor and many other techniques required for making good PCB layout design. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design and evaluation of controlled impedance PCBs for high frequency applications

    Publication Year: 2006 , Page(s): 25 - 30
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (686 KB) |  | HTML iconHTML  

    Operating speeds of data handling systems for onboard spacecraft applications are ever increasing so as to meet the performance requirements like high resolution, stereoscopic imaging etc., of complex remote sensing payloads. In such applications, the Printed Circuit Boards (PCBs) used for realization of hardware are not simple interconnection platforms only, but are required to provide matched impedance interconnections between devices. They are required to include physical circuit configurations that have characteristic impedance with close tolerances as per the required design. This paper discusses the involved process in design, analysis and evaluation of such printed circuit boards. It uses the model suggested in the IPC 2141 document for conducting a sensitivity analysis of characteristic impedance as a function of process parameters. It discusses the production flow in a practical situation for a design up to 350 Mbps LVDS signals. Practically realized parameters have shown an excellent match with the design requirements and the system performance has met all the functional requirements. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The use of modelling in EMC design

    Publication Year: 2006 , Page(s): 32 - 36
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (782 KB) |  | HTML iconHTML  

    As the design cycle for electronic equipment becomes ever shorter, meeting EMC requirements first time is becoming increasingly important. Organisations can no longer afford for product releases to be delayed due to late stage EMC issues. Through the use of computational electromagnetic modelling, it is now possible for designers to consider EMC much earlier in the design phase than was previously possible. This can therefore lead to improved EMC design of products and, a reduction in late stage failures. This paper will therefore discuss how, through the use of computational electromagnetic modelling, EMC can become a design issue rather than predominately a measurement issue. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Post design EMI encounters and remedies in indigenously developed systems

    Publication Year: 2006 , Page(s): 37 - 40
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (638 KB) |  | HTML iconHTML  

    Prediction of the EMI performance theoretically, and implementation of the EMC design practices may not assure the total electromagnetic compatibility of the system in the final compliance testing. The post design EMI encounters may be few but may poses severe costs as well as time consuming. Analyzing and trouble shooting EMI sources are very difficult and EMC fixes may see practical difficulties in terms of space constraints, immediate availability and cost. Practical experience in the EMI-EMC performance evaluation can be helpful in coming out from these sort of problems. In airborne systems weight is the important criteria. One have to consider in terms of flexibility and weight before implementing EMC Fixes. Usage of shielded cables should be minimized to reduce the weight and the coupling of noise should be eliminated. In these areas prediction of common mode noise and differential mode noise becomes tough and eliminating at the source is desirable. The conducted noise can become radiated and vice versa. In this paper the authors mainly expressed their views about controlling the post designed EMI problems with fundamental EMI mitigation techniques. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • [Blank page]

    Publication Year: 2006 , Page(s): 1
    Save to Project icon | PDF file iconPDF (65 KB)  
    Freely Available from IEEE
  • Interference to launch vehicle telecommand system from Hamsat uplink — A case study

    Publication Year: 2006 , Page(s): 43 - 47
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (456 KB) |  | HTML iconHTML  

    This paper describes in detail, the test procedure, computation of signal strengths, and an explanation as to why a launch vehicle telecommand system works satisfactorily even when an interfering signal is stronger than the intended signal. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • NASCAP/GEO charging analysis of INSAT-4B

    Publication Year: 2006 , Page(s): 48 - 52
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (591 KB) |  | HTML iconHTML  

    NASCAP/GEO code has been employed for the on-orbit charging analysis of INSAT-4B. Surface charging of the spacecraft under sunlit and eclipse conditions have been investigated. The INSAT-4B spacecraft is modelled by specifying geometry and the surface materials. The worst case and normal-case GEO plasma environments have been simulated for estimating the potential build up. The analysis has been carried out and extended for to the area of ungrounded ITOC islands on the multilayer insulation that covers the spacecraft body. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • EMI prediction and analysis for experimental payloads of advanced communication technology satellite — GSAT-4

    Publication Year: 2006 , Page(s): 53 - 59
    Cited by:  Papers (1)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (481 KB) |  | HTML iconHTML  

    The aim of this paper is to give an account of the steps that have been taken for ensuring the Electromagnetic compatibility of GSAT-4 Spacecraft that houses new experimental payloads and mainframe elements. The steps include identification of EMI sources viz., emitters like Transmitters, on-board clocks, SPT plume radiation, DC-DC converters of various power processing units and identification of EMI susceptors viz., low level analog signal devices like sensors, accelerometers of OSDE & VBA, sensitive RF receivers etc. Identification of EMI coupling paths like harness, RF leakage joints etc, generation of guidelines to adopt, proper EMI control technics viz., Grounding, Shielding and Filtering are additional measures taken to minimize EMI and meet EMC specifications. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Assembly, integration and testing of CARTOSAT-1

    Publication Year: 2006 , Page(s): 60 - 66
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (534 KB) |  | HTML iconHTML  

    Assembly, Integration and Testing (AIT) is the process in which the subsystems are integrated and tested in a particular sequence to realize the full spacecraft. It involves detailed interface and performance checks to be carried out on different subsystems. The realization of Electro Magnetic Compatibility (EMC) is one of the major tasks while evolving the full spacecraft. This paper briefly describes a list of activities carried out during integration and testing of CARTOSAT-1 spacecraft. It brings out the noise reduction techniques followed to achieve EMC among different subsystems of the spacecraft. The excellent on-orbit performance of IRS-P5 is the final testimony to the measures adopted on ground. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Performance analysis of Spread Spectrum based Communication Systems in interference prone environment

    Publication Year: 2006 , Page(s): 67 - 70
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (448 KB) |  | HTML iconHTML  

    SAMEER-Centre for Electromagnetics has developed both Direct Sequence (DS) and Frequency Hopping (FH) based Spread Spectrum (SS) Communication systems for different applications. The DS and FH systems adopt different methodology for rejecting the narrow band interference. This paper describes the performance of both DS and FH based spread spectrum systems and the mechanism of interference rejection under interference prone environment. Successful design of SS systems is evaluated in terms of level of interference signals the system can tolerate and continue to offer the same system performance with acceptable Bit Error Rate (BER). The features, interference rejection properties of both DS and FH communication systems and selection of appropriate system for an application are highlighted in this paper. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • EM compliance of narrow band input mux filters by using EMI screened components

    Publication Year: 2006 , Page(s): 71 - 74
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (587 KB) |  | HTML iconHTML  

    Electromagnetic compliance in communication satellite payloads is a very essential element for satisfactory performance of the onboard transponders. Input MUX filters (Demultiplexers) are sensitive components of the payload. A filter assembly may employ 6 to 12 channel individual narrow band passive filters with each filter incorporating an input circulator and an output isolator for separating the various transponder channels and providing good output return loss matching. The narrow band filters should have high immunity against high coherent field emissions from the down link power transmit section components like TWTAs, Muxes, Wave guide plumbing joints etc. Coupling of these leakages at the input or directly at the output of the filters should be well below the corresponding channel carriers to avoid degradation in frequency response of the transponders. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On-orbit data from surface charge monitor payload of GSAT-2 spacecraft

    Publication Year: 2006 , Page(s): 75 - 80
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (692 KB) |  | HTML iconHTML  

    On-orbit data from the surface charge monitor payload of GSAT-2 spacecraft has been briefly summarized in this paper. The payload, comprising four detector electronics heads and a central electronics module, has been operating continuously since May 14, 2003, except when switched OFF during the period from August 14, 2003 to September 12, 2003. The data correlated well with the GOES-10/12 data on Geomagnetic activity. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Assessment and control of electromagnetic interference in CARTOSAT-1 spacecraft

    Publication Year: 2006 , Page(s): 81 - 85
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (505 KB) |  | HTML iconHTML  

    The CARTOSAT-1 or IRS-P5 is the next generation satellite after IRS-1 series in Indian Remote Sensing Satellite programme. The satellite is the "state of the art technology" with two Panchromatic cameras. These cameras provide stereoscopic images due to their angle of inclination towards earth. One camera called FORE, is mounted at +26 degrees with respect to spacecraft earth viewing axis whereas the other camera AFT, is mounted at -5 degrees. Since the FORE camera looks at a location before the AFT camera, the same target area can be viewed twice at two different angles, to give rise to stereoscopic images. This paper brings out the EMC control efforts from the beginning of the project towards realization of the flight worthy satellite. It outlines the typical EMI environments encountered, the guidelines adopted by subsystem designers with reference to EMI problems in the realization of their systems, EMC considerations in the design of harness, the EMI control techniques in the intra system level and inter system level, the grounding schemes adopted in the spacecraft and the EMI tests conducted at subsystem and system level. The on-orbit performance of CARTOSAT-1 is the final testimony to the measures adopted on ground. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.