Device having a multimode antenna with variable width of conductive wire

Patent metadata

Field	Value
Publication number	US-11469598-B2
Application number	US-201916706382-A
Country	US
Kind code	B2
Filing date	Dec 6, 2019
Priority date	Aug 7, 2015
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

A method of providing a single structure multiple mode antenna is described. The antenna is preferably constructed having a first inductor coil that is electrically connected in series with a second inductor coil. The antenna is constructed having a plurality of electrical connections positioned along the first and second inductor coils. A plurality of terminals is connected to the electrical connections that facilitate numerous electrical connections and enables the antenna to be selectively tuned to various frequencies and frequency bands.

First claim

What is claimed is:

1. A device comprising:
a first coil having first and second coil ends, wherein the first coil comprises at least one conductive wire with a plurality of turns; and
a second coil having third and fourth coil ends, wherein the second coil is electrically connected in series with the first coil via a junction point between the second coil end of the first coil and the third coil end of the second coil, and wherein the second coil comprises a plurality of conductive wires, each wire of the plurality of conductive wires having a plurality of turns,
wherein the second coil includes an insulator separating at least two conductive wires of the plurality of conductive wires,
wherein the second coil includes at least one connector connecting two or more conductive wires of the plurality of conductive wires, and
wherein at least one wire of the plurality of conductive wires has (i) a first turn comprising a varying first width in a first range, and (ii) a second turn comprising a varying second width in a second range, wherein the second range is different than the first range; and

first, second, and third terminals that are physically available for connection with circuitry, wherein (i) the first terminal is electrically connected to the first coil end of the first coil, (ii) the second terminal is electrically connected to the fourth coil end of the second coil, and (iii) the third terminal is electrically connected to the junction point,
wherein the device is capable of operating in each of (i) a first operating mode in which a conducting path is formed across a first pairwise combination of the first and second terminals such that electrical current flows through both the first coil and the second coil that are electrically connected in series via the junction point between the second coil end of the first coil and the third coil end of the second coil, wherein the device has a first inductance while placed in the first operating mode and (ii) a second operating mode in which a conducting path is formed across a second pairwise combination of the second and third terminals such that electrical current flows through the second coil but not the first coil, wherein the device has a second inductance while placed in the second operating mode.

2. The device of claim 1 , wherein the second coil operates at a frequency selected from a frequency range between 100 kHz and 350 kHz.

3. The device of claim 1 , wherein the first range or the second range is between 0.5 mm and 1.5 mm.

4. The device of claim 1 further comprising a gap width between at least two of the plurality of turns of the second coil, wherein the gap width is between 0.1 mm and 0.5 mm.

5. The device of claim 1 further comprising a gap width between at least two of the plurality of turns of the second coil, wherein the gap width is between 0.05 mm and 0.3 mm.

6. The device of claim 1 further comprising a gap width disposed between one of the turns of the first coil and one of the turns of the second coil, wherein the gap width is between 0.05 mm and 10 mm.

7. The device of claim 1 , wherein the first turn is disposed adjacent the second turn.

8. The device of claim 1 , wherein the first turn is an outer turn and the second turn is an inner turn, and wherein the first range is greater than the second range.

9. The device of claim 1 , wherein the first range is between 0.5 mm and 1.5 mm and the second range is between 0.2 mm and 1.0 mm.

10. The device of claim 1 , wherein the first coil is positioned adjacent to the second coil.

11. The device of claim 1 , wherein the circuitry comprises a selection circuit that is configured to cause the device to operate in each of the first and second operating modes.

12. The device of claim 1 , further comprising a shielding material disposed adjacent to at least one of the first coil or the second coil, wherein the shielding material comprises a ferrite material.

13. The device of claim 12 , wherein the second coil and the shielding material collectively provide a quality factor greater than 10.

14. The device of claim 1 , wherein an inductance of the second coil is greater than 4.2 μH, and wherein the second coil operates at a frequency selected from a frequency range between 100 kHz and 350 kHz.

15. The device of claim 1 , wherein the second coil comprises at least 10 turns.

16. The device of claim 1 , wherein the first coil and the second coil are disposed on one or more flexible substrates.

17. The device of claim 16 , wherein the one or more flexible substrates comprise a substrate material selected from a group consisting of a polyimide, an acrylic, fiberglass, polyester, polyether imide, polytetrafluoroethylene, polyethylene, polyetheretherketone (PEEK), polyethylene napthalate, fluropolymers, copolymers, a ceramic material, a ferrite material, and combinations thereof.

18. The device of claim 1 , wherein the device is a mobile device.

19. The device of claim 1 , wherein each conductive wire of the first coil and the second coil comprises an electrically conductive material selected from a group consisting of a trace, a filar, a filament, and combinations thereof.

20. The device of claim 1 , wherein the device is further capable of operating in a third operating mode in which a conducting path is formed across a third pairwise combination of the first and third terminals such that electrical current flows through the first coil but not the second coil, wherein the device has a third inductance while placed in the third operating mode.

21. The device of claim 20 , wherein the third operating mode in which the device is capable of operating corresponds to an operating frequency of 13.56 MHz.

22. The device of claim 1 , wherein the first operating mode in which the device is capable of operating corresponds to an operating frequency band of about 100 kHz to about 250 kHz, and wherein the second operating mode in which the device is capable of operating corresponds to an operating frequency band of about 250 kHz to about 500 kHz.

23. A device comprising:
a first coil having first and second coil ends, wherein the first coil comprises at least one conductive wire with a plurality of turns; and
a second coil having third and fourth coil ends, wherein the second coil is electrically connected in series with the first coil via a junction point between the second coil end of the first coil and the third coil end of the second coil, and wherein the second coil comprises a plurality of conductive wires, each wire of the plurality of conductive wires having a plurality of turns,
wherein the second coil includes an insulator separating at least two conductive wires of the plurality of conductive wires,
wherein the second coil includes at least one connector connecting two or more conductive wires of the plurality of conductive wires, and
wherein at least one wire of the plurality of conductive wires has (i) a first turn comprising a varying first width in a first range, and (ii) a second turn comprising a varying second width in a second range, wherein the second range is different than the first range; and

first, second, and third terminals that are physically available for connection with circuitry, wherein (i) the first terminal is electrically connected to the first coil end of the first coil, (ii) the second terminal is electrically connected to the fourth coil end of the second coil, and (iii) the third terminal is electrically connected to the j

Assignees

• Nucurrent Inc

Inventors

• Peralta Alberto
• Singh Vinit
• Rajagopalan Ajit
• Luzinski Jason
• Babcock Jacob
• Frysz Christine A

Classifications

• H02J4/25

  for transfer of electric power between AC and DC networks, e.g. for supplying the DC section within a load from an AC mains system · CPC title

• H02J7/585

  Sequential battery discharge in systems with a plurality of batteries · CPC title

• H02J7/42

  with electronic devices having internal batteries, e.g. mobile phones · CPC title

• H01Q7/00

  Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop · CPC title

• H01F21/02

  continuously variable, e.g. variometers · CPC title