Antenna configuration for dynamic re-distribution of magnetic fields
First Claim
Patent Images
1. A device comprising:
- a primary coil antenna including a continuous loop of coil antenna line to form an outermost loop and an innermost loop;
a loop array including a plurality of loop antennas that are disposed on top of and within an area defined by the innermost loop of the primary coil antenna, wherein each loop antenna of the plurality of loop antennas is operated independently from other of the loop antennas, each loop is configured to have a resonance frequency that is below an operating frequency of the primary coil antenna upon activation;
a near field communication (NFC) transceiver coupled to the primary coil antenna and the loop array, and configured to process signals received through the primary coil antenna; and
one or more processors coupled to the NFC transceiver, to the loop array, and to the primary coil antenna, and configured to detect a location of a coupling secondary coil antenna, and selectively activate the plurality of loop antennas based on the detected location of the coupling secondary coil antenna, the selectively activating being to re-distribute a magnetic field from the primary coil antenna based on the detected location.
1 Assignment
0 Petitions
Accused Products
Abstract
Described herein are architectures, platforms and methods for dynamic re-distribution of magnetic fields in a device during near field communication (NFC) related functions or transactions and/or wireless charging.
8 Citations
20 Claims
-
1. A device comprising:
-
a primary coil antenna including a continuous loop of coil antenna line to form an outermost loop and an innermost loop; a loop array including a plurality of loop antennas that are disposed on top of and within an area defined by the innermost loop of the primary coil antenna, wherein each loop antenna of the plurality of loop antennas is operated independently from other of the loop antennas, each loop is configured to have a resonance frequency that is below an operating frequency of the primary coil antenna upon activation; a near field communication (NFC) transceiver coupled to the primary coil antenna and the loop array, and configured to process signals received through the primary coil antenna; and one or more processors coupled to the NFC transceiver, to the loop array, and to the primary coil antenna, and configured to detect a location of a coupling secondary coil antenna, and selectively activate the plurality of loop antennas based on the detected location of the coupling secondary coil antenna, the selectively activating being to re-distribute a magnetic field from the primary coil antenna based on the detected location. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An apparatus comprising:
-
a primary coil antenna that includes an outermost loop and an innermost loop; and a loop array including a plurality of loop array coils that are disposed over and within an area defined by the innermost loop, wherein each loop array coil of the plurality of loop array coils is operated independently from other of the loop array coils, and each loop array coil upon activation is adjusted to resonate below an operating frequency of the primary coil antenna, the plurality of loop array coils being selectively activated based on a detected location of a secondary coil antenna to re-distribute a magnetic field from the primary coil antenna based on the detected location. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. A method of dynamic re-distribution of magnetic fields during near field communications (NFC) related functions or transactions in a device, the method comprising:
-
providing near field coupling by a primary coil antenna having an outermost loop and an innermost loop; detecting a location of a coupling secondary coil antenna; and in response to detecting the location of the coupling secondary coil antenna, selectively activating a plurality of loop array coils disposed over and within an area defined by the innermost loop, wherein each loop array coil of the plurality of loop array coils is operated independently from other of the loop array coils, and each loop array coil is configured to resonate below an operating frequency of the primary coil antenna, the selective activation being to re-distribute a magnetic field from the primary coil antenna based on the detected location. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification