Electromagnetic Interference Shielding Solutions for Integrated Circuits
Victor SoleraJ. TorresJorge VictoriaAdrián SuárezAntonio AlcarriaVíctor MartínezPedro A. MartínezAndrea AmaroRoberto HerráizJoaquín Pérez
0
Citation
3
Reference
10
Related Paper
Abstract:
Integrated circuits (IC) operate in increasingly complex environments in terms of electromagnetic compatibility (EMC). Over time, ICs have implemented certain features that enable higher performance. Among these features, it is worth mentioning the use of higher frequencies, which are often electromagnetic interferences (EMI) sources. In addition, the device size reduction makes it difficult to introduce some specific elements to avoid EMC problems. For this reason, using board-level shielding (BLS) solutions can solve many problems. One of the most widespread methods, shielding cabinets, is discussed in this paper. Shielding cabinets are a kind of metal box that encloses the IC and insulates it. It can enclose the EMI source as well. The objective of this paper is the characterization of different models of shielding cabinets up to 5 GHz. The cabinets are characterized through two experimental measurements and a group of simulations.Keywords:
Electromagnetic Compatibility
Conducted electromagnetic interference
A super network was built in this paper to describe the interconnections between electromagnetic interference (EMI) and electromagnetic compatibility (EMC) indicators. And EMI network was divided into three clusters according to the basic components of EMI. Then some features of the super network were analysed to character the relationships among indicators and nodes of EMI network, which will support the EMC predesign of the electronic system.
Electromagnetic Compatibility
Electromagnetic environment
Conducted electromagnetic interference
Cite
Citations (0)
Electromagnetic interference/electromagnetic compatibility (EMI/EMC) prediction models and techniques, and analysis tools are being widely developed and used for radio frequency systems. However, given that electro optical (EO) and infrared (IR) systems also utilise the electromagnetic spectrum, it is important that the EMI/EMC concept should also be extended to incorporate EO and IR systems. There are currently no prediction models and technique or analysis tools available to assess EMI/EMC of EO and IR systems. This paper presents an EMI/EMC modelling prediction method, which has been applied on a number of test cases to assess EMI/EMC for EO and IR systems.
Electromagnetic Compatibility
Conducted electromagnetic interference
Electromagnetic spectrum
Cite
Citations (0)
This chapter provides a short description of electrostatic discharge (ESD), electrical overstress (EOS), electromagnetic interference (EMI), electromagnetic compatibility (EMC) and latchup. It introduces various ESD sources and models. The chapter focuses on the EOS issues, and the other areas. ESD is a subclass of EOS and may cause immediate device failure, permanent parameter shifts and latent damage causing increased degradation rate. EOS is a wide classification for over-current conditions for electronic components and electronic systems. EMI can lead to both component level or system level failure of electronic systems. EMI can lead to failure of electronic components, without physical contact to the electronic system. EMC has two features. The first feature is a source of emission of an electromagnetic field. The second feature is the collector of electromagnetic energy. The electrical connectivity of pads, circuits, and circuit functional blocks can influence the latchup robustness of a semiconductor chip.
Electromagnetic Compatibility
Robustness
Electronic component
Conducted electromagnetic interference
Cite
Citations (0)
Modern ships have numerous installed radio frequency (RF) systems and, as a consequence, there is a high likelihood of electromagnetic interference (EMI). To analyze RF systems EMI and electromagnetic compatibility (EMI/EMC), computational electromagnetic (CEM) modeling is often used. However, using CEM can be challenging due to a number of reasons, such as computational cost, associated with simulation time and computer memory, and obtaining sufficiently high accuracy, associated with simulated results. Computer memory cost and obtaining high accuracy are significant challenges for ship EMI/EMC, because it becomes an electrically large problem at GHz frequencies. This paper will provide an overview of a methodology to analyze high-frequency (=1GHz) ship EMI/EMC, using CEM, while maintaining reasonably high accuracy and reducing the computer memory cost.
Electromagnetic Compatibility
Conducted electromagnetic interference
Cite
Citations (3)
The compliance of E/E products to Electromagnetic Emission (EME) standards is verified by emission measurements using a defined test setup including electromagnetic interference receivers (EMI Receivers). More and more, EMEs are also considered and simulated during the product design phase. Consequently, the behaviors of all components that are required for an Electromagnetic Compatibility (EMC) test have to be included in the simulation which includes the EMI Receiver model. This paper presents the usage of an novel EMI Receiver model on an airbag control unit use case. With a new guidance for choosing the correct simulation time meaningful emission results can be achieved. The results show a good match between simulation and measurement. Major deviations are due to not modeled components and parameter variations.
Electromagnetic Compatibility
Conducted electromagnetic interference
Electromagnetic simulation
Cite
Citations (0)
Information technology (I/T) has evolved to being a critical element of our world wide business and personal lives. While designed to meet electromagnetic compatibility (EMC) standards, the high speed functions of a computing system are exposed to external sources of electromagnetic interference (EMI). Support environments should be designed to mitigate EMI, thus complementing designed system availability.
Electromagnetic Compatibility
Electromagnetic environment
Cite
Citations (1)
This paper discusses typical electromagnetic interference (EMI) problems encountered in airborne/ground subsystems during EMI/EMC performance evaluation for conducted emission, radiated emission and conducted susceptibility tests. It also highlights different suppression techniques, followed in hardening the units by selecting proper EMI power line filters, using appropriate shielding aids, good grounding practices and transient protection devices to achieve electromagnetic compatibility (EMC) in all the equipment to meet the test requirements. Finally the test results along with the specification limits are also given.
Electromagnetic Compatibility
Conducted electromagnetic interference
Electromagnetic environment
Transient (computer programming)
Cite
Citations (9)
This paper presents results of electromagnetic interference (EMI) analyses and tests performed on a selected set of legacy receivers to determine their EMI susceptibility to UWB transmitters. The results of this investigation will help to define UWB system parameters that are required for electromagnetic compatibility (EMC).
Electromagnetic Compatibility
Wideband
Conducted electromagnetic interference
Cite
Citations (0)
This work deals with electromagnetic interference (EMI), intentional and non intentional. Sources of EMI are described, as well as the protection procedure. The antennas used in electromagnetic compatibility (EMC) used for measuring EMI are described.
Electromagnetic Compatibility
Conducted electromagnetic interference
Cite
Citations (0)
Electromagnetic Compatibility (EMC) standards generally limit the electromagnetic emission (EME) of products, e.g. assembled in a vehicle. The compliance to EME standards is verified by emission measurements using a defined test setup including electromagnetic interference receivers (EMI Receivers). Integrated circuits undergo extensive simulations before they are actually produced. More and more, the electromagnetic emission are also considered and simulated during the product design phase. Consequently, the behaviors of all components that are required for an EMC test have to be included in the simulation. This paper investigates the modeling of an EMI receiver and presents an implementation with short computation time. The model is verified with various test signals.
Electromagnetic Compatibility
Electromagnetic environment
Conducted electromagnetic interference
Cite
Citations (21)