×

Multiple-frequency solutions for remote access systems

  • US 8,907,760 B2
  • Filed: 09/09/2010
  • Issued: 12/09/2014
  • Est. Priority Date: 09/09/2010
  • Status: Active Grant
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.

View all claims
  • 10 Assignments
Timeline View
Assignment View
    ×
    ×