Patent ID: 6563474
Filing Date: 2003-05-13
Classification: B60C,H01F,H01Q

Abstract:
A remote access device for use with an automotive vehicle, the remote access device comprising:an antenna including a first inductor having a first axis, a second inductor having a second axis, and a third inductor having a third axis, wherein the first axis is non-parallel to the second axis such that the first inductor generates a first magnetic field associated with a first plane and the second inductor generates a second magnetic field associated with a second plane different than the first plane, and the third axis is non-parallel to the first and second axes such that the third inductor generates a third magnetic field associated with a third plane different than the first and second planes; a battery for use in powering the antenna; and a housing for the antenna; wherein, to conserve battery power, the antenna is configured such that the first, second and third inductors can generate the first, second and third magnetic fields independently in combinations including one or more of the first, second and third magnetic fields.