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This paper investigates the performance of an automotive RKE (Remote Keyless Entry) system under the influence of RF interference, injected by the Bulk Current Injection (BCI) test technique. Measurements indicate a severe degradation of performance in the 15 MHz–30 MHz frequency band where RF current injection level is set at 106 dBμA. Injection at these frequencies leads to failure in correct operation...
DC-DC buck converters are widely used in modern automotive applications due to their high power efficiency. However, they are also a major cause of electromagnetic emissions due to the nature of the fast switching voltages and currents. In modern automobiles there are as many as 24 antennas [2015], and the number will continue to increase in coming years. The close proximity of electronic modules...
Electrical interaction of Engine Cooling Fan (ECF) with Heat Exchanger would strongly influence the electromagnetic behavior, and hence the EMC test results. Motivation and Objective for extensive and exhaustive component-level Electro-Magnetic Compliance (EMC) tests relies on close correlation and harmony between the vehicle-level and component-level test results. In fact, comprehensive component-level...
A practical methodology for measurements of common mode RF currents modulated with LF noise on cables for prediction of radiated emissions up to 500 MHz for automotive scenario is presented. More specifically, when microcontroller clock frequency operating at 1 MHz rate, is modulated with a low frequency (LF) signal, emanating from a 1.5 kHz pulse train, or a switch mode power supply (200 kHz), in...
Modern automobiles feature more than 80 applications that rely on magnetic sensors. Magnetic or hall-effect sensor ICs are extremely temperature-stable and stress resistant devices especially suited for operating over extended temperature ranges to 150oC ideal for harsh automotive environment. More than 2 billion hall-effect sensors are manufactured annually for automotive applications. Hall-effect...
Radiated Emission non-compliance at vehicle-level is an EMC challenge for supplier design engineers and ultimately for automotive OEM validation team. However, infrequently an undesirable situation may result due to the complexity of RF Interference environment of modern vehicles. The vehicle level radiated emission compliance validation is extremely complex and costly and not suitable for troubleshooting...
Radiated emission (RE) compliance requirements of automotive sector demands one of the most difficult design challenges for EMC engineers as compared with those of FCC and military standard mandates. Recent revisions to EMC requirements has exasperated the RE compliance levels considerably. Automotive industry radiated emission requirements span over a wide frequency range (150 kHz–1.583 GHz). The...
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