Multiple-frequency solutions for remote access systems
First Claim
Patent Images
1. A portable passive keyless entry device antenna assembly comprising:
- a surface mount package that includesa first coil antenna oriented parallel to an X plane and configured to receive a low frequency (LF) signal having a carrier frequency between 30 kHz to 300 kHz;
a second coil antenna oriented parallel to a Y plane and configured to receive a low frequency (LF) signal having a carrier frequency between 30 kHz to 300 kHz;
a third coil antenna having a plurality of windings and oriented parallel to a Z plane and configured to receive a low frequency (LF) signal having a carrier frequency between 30 kHz to 300 kHz;
a fourth coil antenna having a plurality of windings and oriented parallel to a Z plane and configured to receive a high frequency (HF) signal having a carrier frequency between 3 MHz and 30 MHz, the windings of the third coil antenna are separated from one another by the windings of the fourth coil antenna; and
wherein, viewed from above, the first coil and the second coil define a “
+”
shape, and the third coil has a rectangular shape surrounding the “
+”
shape and the fourth coil antenna has a rectangular shape surrounding the “
+”
shape.
10 Assignments
0 Petitions
Accused Products
Abstract
Aspects of the present disclosure are directed toward a system in which a three-dimensional low-frequency (3D-LF) antenna and a high frequency (HF) antenna are used. The 3D-LF antenna includes three coils each oriented relative to X, Y and Z axes that define a Cartesian coordinate system for a three-dimensional space. The HF antenna is oriented along one of the axes of the LF coils and in the same antenna package as the 3D-LF antenna. The 3D-LF antenna is configured to be used in connection with an LF signal of between 3 kHz and 300 kHz. The HF antenna is configured to be used in connection with an HF signal between 3 MHz and 30 MHz.
19 Citations
20 Claims
-
1. A portable passive keyless entry device antenna assembly comprising:
a surface mount package that includes a first coil antenna oriented parallel to an X plane and configured to receive a low frequency (LF) signal having a carrier frequency between 30 kHz to 300 kHz; a second coil antenna oriented parallel to a Y plane and configured to receive a low frequency (LF) signal having a carrier frequency between 30 kHz to 300 kHz; a third coil antenna having a plurality of windings and oriented parallel to a Z plane and configured to receive a low frequency (LF) signal having a carrier frequency between 30 kHz to 300 kHz; a fourth coil antenna having a plurality of windings and oriented parallel to a Z plane and configured to receive a high frequency (HF) signal having a carrier frequency between 3 MHz and 30 MHz, the windings of the third coil antenna are separated from one another by the windings of the fourth coil antenna; and wherein, viewed from above, the first coil and the second coil define a “
+”
shape, and the third coil has a rectangular shape surrounding the “
+”
shape and the fourth coil antenna has a rectangular shape surrounding the “
+”
shape.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 20)
-
10. A portable passive keyless entry device comprising:
-
a printed circuit board (PCB) having a low frequency (LF) receiver circuit configured and arranged for communicating an LF signal having a carrier frequency between 30 kHz to 300 kHz; a high frequency (HF) transceiver circuit configured and arranged for producing a high frequency (HF) signal having a carrier frequency between 3 MHz and 30 MHz; a microprocessor circuit configured and arranged for receiving an activation signal from the LF receiver circuit and in response thereto, communicating authentication information using the HF transceiver circuit; and an antenna package that connects to the PCB and that houses a first coil antenna oriented parallel to a X plane and configured to receive the LF signal, a second coil antenna oriented parallel to a Y plane and configured to receive the LF signal, a third coil antenna having a plurality of windings and oriented parallel to a Z plane and configured to receive the LF signal; a fourth coil antenna having a plurality of windings and oriented parallel to the Z plane and configured to receive and transmit the HF signal, the windings of the third coil antenna being separated from one another by the windings of the fourth coil antenna; and wherein, viewed from above, the first coil and the second coil define a “
+”
shape, and the third coil has a rectangular shape surrounding the “
+”
shape and the fourth coil antenna has a rectangular shape surrounding the “
+”
shape. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
-
-
18. A portable passive keyless entry device communication circuit comprising:
-
a printed circuit board (PCB); an antenna package connected to the PCB and including a three-dimensional radio antenna configured to receiving radio frequency signals in three dimensions according to axes X, Y and Z and including a first coil oriented parallel to a plane of the X axis, a second coil oriented parallel to a plane of the Y axis, and a third coil having a plurality of windings and oriented parallel to a plane of the Z axis, the third coil including a first set of windings and a second set of windings; wherein, viewed from above, the first coil and the second coil define a “
+”
shape, and the windings of third coil have a rectangular shape surrounding the “
+”
shape and a fourth coil antenna having a plurality of windings with a rectangular shape surrounding the “
+”
shape, the windings of the third coil antenna being separated from one another by the windings of the fourth coil antenna; anda first communication circuit on the PCB and for communicating a low frequency (LF) signal having a carrier frequency between 30 kHz to 300 kHz, the first communication circuit including one or more processing circuits configured to code communications carried on the LF signal; a first electrical connection configured to communicate the LF signal between the one or more processing circuits and the first coil; a second electrical connection configured to communicate the LF signal between the one or more processing circuits and the second coil; a third electrical connection configured to communicate the LF signal between the one or more processing circuits and the third coil, wherein the first set of windings is connected to the third electrical connection; and a second communication circuit on the PCB and for producing a high frequency (HF) signal having a carrier frequency between 3 MHz and 30 MHz, the second communication circuit including one or more processing circuits configured to code communications carried on the HF signal; and a fourth electrical connection configured to communicate the HF signal between the one or more processing circuits and the third coil, wherein the second set of windings is connected to the fourth electrical connection. - View Dependent Claims (19)
-
Specification