Electromagnetic Field Analysis for Smart Key Antenna

Yuji Okada


Currently, people are able to control a door lock from a distant point of the outside of a vehicle. Recently, a door lock system has been developed to detect an owner approaching and unlock when he/she grips a door handle. In this system, an antenna detects the existence of an owner with his electrical key within a 3000mm radius around the vehicle. As this performance of the antenna decides the operating area, it is essential to grasp directivity and confirm that there is the unoperating area. In this report, we will describe a case of which we have developed a technique to predict directivity of an antenna using the electromagnetic field analysis software, JMAG

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