Remote access device having multiple inductive coil antenna
First Claim
1. 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.
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Accused Products
Abstract
A remote access device which may comprise an antenna having a first inductor with a first axis, a second inductor with a second axis, and a third inductor with a third axis, where the first, second and third axes may be oriented substantially perpendicular to each other, respectively, such that the first inductor generates a first magnetic field associated with a first plane, the second inductor generates a second magnetic field associated with a second plane different than the first plane, and the third inductor generates a third magnetic field associated with a third plane different than the first and second planes. The remote access device preferably includes a single form for the first, second and third inductors, where the first, second and third inductors are each wound on the form.
66 Citations
29 Claims
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1. A remote access device for use with an automotive vehicle, the remote access device comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A remote transmitter for use with an automotive vehicle, the remote transmitter comprising:
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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 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. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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Specification