The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In 2011 IEC-CISPR-B2 decided to start a project to investigate the possibility of introducing two new measurement distances (3 m and 5 m)1 in CISPR 11 [1] for radiated emission measurements on medium sized test objects (devices under test) in the frequency range 30 MHz–1 GHz. In this context ‘medium sized’ test objects are objects that fit within an imaginary cylindrical test volume of 3 m diameter...
Models for field-to-line coupling are interesting because they help to predict the immunity of PCBs and explain the relation between routing and immunity. In this article a meandered PCB trace illuminated by EM field in a TEM cell is analysed. The near-end and far-end coupling is predicted using two models: a detailed and an approximative one. The detailed model is a circuit of coupled multi-conductor...
This paper discusses a novel design of Power Distribution Network (PDN). By physical structuring of the power plane into repetitive symmetrical and asymmetrical segments of varying size, suppression of the propagation of unwanted noise throughout the PDN over a wide frequency range is achieved. Prototype boards were built on standard FR4 and thin FR4 substrates and characterized using a Vector Network...
This paper outlines a review of current automotive EMC standards, as well as anticipated developments, in terms of their applicability to electric powertrain. It is concluded that the current situation is lacking in test limits and methodology to fully account for vehicles with electric powertrain, and that further development is required in a number of areas.
Radiated emission testing of electric components, modules and systems is mandatory. Such tests are performed in absorber-lined shielded enclosures during the development process. Due to strict time schedules, limited access to EMC measurement facilities and cost reasons, alternative methods are needed. This contribution presents an approach for a pre-compliance test method for radiated emissions of...
The expansion of renewable energies leads to the use of more and more power converters to increase efficiency in generation, distribution and conversion of electrical power. To increase efficiency of power electronic devices their switching times have to be as short as possible. For high power applications this is combined with high voltages and currents and induces a wide frequency range with high...
The useful bandwidth obtained from time domain CEM analysis is usually determined by an arbitrary cutoff based on a dispersion criterion. In this paper we investigate the possibility of obtaining valid results up to frequencies significantly higher than this cutoff for over-moded problems by the application of frequency warping methods.
The mathematical model of electromagnetic field of PLC systems inside buildings has been proposed. On the basis of this model it is possible to estimate indoor electromagnetic environment where PLC systems transmit data via power lines. It allows at a design stage to take measures for providing electromagnetic compatibility between PLC systems and other electronic and electric devices working inside...
A new test method has been implemented for testing the EMC performance of small components like small connectors and IC's, mainly used in mobile applications. The test method is based on the EMC-stripline method. Both emission and immunity can be tested up to 6GHz, based on good RF matching conditions and with high field strengths.
This paper investigates the safety consequences of the use of EMI filters on board ships. Ship's power supply systems differ from their land-based counterparts but there are no special “EMI filters for ship-board use” on the market. The paper shows that the level of protection against electric shock is severely undermined when normal EMI filters are applied on board ships.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.