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February 2006 [Systems & Subsystems] Estimating RKE System Performance Remote-keyless-entry (RKE) systems unlock cars from a distance by transmitting a coded radio signal over the air from a key fob to a receiverin the car. The receiver decodes the signal and controls an actuator that opens the door. An important performance benchmark of an RKE system is its useful range. This range is determined by a link-budget calculation. The most crucial factors of this calculation are the power transmitted from the key fob, receiver sensitivity, and path loss.... |
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